A Complete Guide for QA Professionals
In today’s fast-paced software development world, Unix/Linux Testing has become an essential skill for every Quality Assurance (QA) engineer. Whether you’re testing backend systems, APIs, or web applications, knowing how to work efficiently in Unix/Linux environments can make you a more capable and in-demand QA professional.
If you’re aiming to advance your career through QA testing training or Quality Assurance tester training, mastering Unix/Linux is one of the smartest moves you can make. In this blog, we’ll break down everything you need to know from basic commands and file systems to automation, scripting, and real-world testing applications.
Why Unix/Linux Matters in QA Testing
Most enterprise applications today are hosted on Unix/Linux servers from banking platforms to e-commerce systems. Understanding Unix/Linux is not just an add-on skill for testers; it’s a core necessity.
Key Reasons Unix/Linux Is Crucial for QA Testing
- Server-Side Applications: Many production environments run on Linux servers. Testers must know how to navigate and validate deployments.
- Log File Analysis: Testers frequently analyze log files to identify defects or confirm test results.
- Automation Support: Continuous integration (CI) tools like Jenkins often run on Linux systems.
- Security and Permission Control: Understanding user permissions is vital for testing security-based applications.
- Scripting and Automation: Shell scripting enables automation of repetitive test tasks.
Learning Unix/Linux as part of your QA testing training helps you handle real-world systems effectively and ensures you can perform end-to-end testing independently.
Getting Started with Unix/Linux Basics for QA Testers
Before diving into testing concepts, you should be familiar with Unix/Linux fundamentals.
Key Concepts Every QA Tester Should Know
| Concept | Description | Example |
|---|---|---|
| Shell | Interface that accepts user commands. | Bash, Korn, Zsh |
| File System | Hierarchical structure of files and directories. | /home/user/testcases |
| Command Line Interface (CLI) | Allows testers to execute commands directly. | ls, cd, cat |
| Permissions | Controls who can read, write, or execute files. | chmod 755 script.sh |
Example:
cd /var/log grep "error" application.log > error_report.txt
The above command navigates to the log folder, searches for the keyword “error” in the log file, and saves it in a report file a task QA testers perform daily.
Common Unix/Linux Commands Used in Testing
For effective Unix/Linux Testing, mastering essential commands is a must. Here are the most useful ones for QA engineers:
File and Directory Management
ls– Lists files and directoriescd– Changes directorypwd– Prints current directorymkdir– Creates new directoryrm– Removes filescp– Copies files
Example:
cp /testcases/test1.sh /backup/
File Content and Search Commands
cat– Displays file contentgrep– Searches for patterns in fileshead/tail– Shows beginning or end of filesfind– Locates files based on criteria
Example:
grep "PASS" test_output.txt
This command helps testers quickly identify successful test cases from a result file.
Role of Shell Scripting in Unix/Linux Testing
Shell scripting is one of the most powerful tools for QA testers. It automates routine tasks, saves time, and reduces manual effort.
Benefits of Shell Scripting in QA Testing
- Automates test execution and report generation.
- Simplifies regression and smoke testing.
- Integrates easily with automation frameworks.
- Ensures consistency and reliability in test runs.
Sample Script: Automating Log File Validation
#!/bin/bash LOG_FILE="/var/log/app.log" if grep -q "ERROR" $LOG_FILE; then echo "Errors found in log file!" else echo "No errors detected. Test Passed." fi
This simple script demonstrates how testers can automate log validation during Unix/Linux Testing.
Testing Applications in Unix/Linux Environments
Unix/Linux systems support various types of testing. QA engineers need to understand how to conduct each test type efficiently.
a) Functional Testing
Testers verify application features through command-line tools or scripts.
Example: Running API endpoints using curl:
curl -X GET http://localhost:8080/api/users
b) Performance Testing
Tools like JMeter or LoadRunner are deployed on Linux to perform load tests and monitor resource utilization.
Example:
top
vmstat 5
These commands monitor CPU and memory usage during tests.
c) Regression Testing
Using shell scripts, QA testers can rerun test suites automatically after code updates.
Real-World Unix/Linux Testing Scenarios
Let’s explore a few real-world QA testing scenarios that rely heavily on Unix/Linux skills.
Scenario 1: Log File Validation
After a deployment, testers check application logs for errors or exceptions using commands like:
tail -n 50 /opt/app/logs/app.log | grep "Exception"
Scenario 2: File Transfer Validation
QA teams often validate data transfers between environments using scp or rsync:
scp testdata.csv user@server:/data/
Scenario 3: Cron Job Validation
Automated tasks (cron jobs) are a key part of backend systems. Testers verify job success using:
crontab -l grep "backup" /var/log/syslog
Mastering these Unix/Linux Testing techniques enables testers to identify issues proactively and ensure application stability.
Integrating Unix/Linux Testing with QA Automation
Automation testing frameworks like Selenium, Jenkins, and TestNG often operate on Linux servers. Knowing how to set up and execute automated tests in this environment is crucial.
Example: Jenkins Integration
- Jenkins server runs on Linux.
- Testers schedule builds and trigger test scripts via command line.
- Reports and logs are stored in Linux directories.
Command Example:
./run_regression_tests.sh > regression_report.log
By combining Unix/Linux Testing with automation, QA teams improve accuracy, efficiency, and scalability of their testing pipelines.
File Permissions and Security in QA Testing
Security testing begins with understanding file permissions in Unix/Linux. Each file or directory has read (r), write (w), and execute (x) permissions for users, groups, and others.
Command Example:
chmod 755 test_script.sh
This gives the owner full permissions and others read-execute access.
Understanding permissions ensures testers don’t accidentally alter critical files or expose security vulnerabilities.
Tools Commonly Used in Unix/Linux Testing
Here are some commonly used testing and support tools on Linux platforms:
| Tool | Purpose |
|---|---|
| JMeter | Load and performance testing |
| Postman CLI (Newman) | API testing via Linux command line |
| Selenium Grid | Automated browser testing |
| Jenkins | Continuous integration & test automation |
| Curl/Wget | API endpoint testing |
| Docker | Environment containerization for consistent QA environments |
Learning to integrate these tools as part of your QA testing training ensures a comprehensive testing skill set.
Best Practices for Unix/Linux Testing
Follow These Key Guidelines:
- Always verify test environments before execution.
- Automate repetitive test scenarios using shell scripts.
- Maintain detailed test logs for traceability.
- Use version control (Git) for managing scripts.
- Clean up temporary files post-testing to maintain system health.
These best practices will help you build a professional testing workflow that aligns with industry standards.
Advantages of Learning Unix/Linux in QA Testing
| Advantage | Description |
|---|---|
| Efficiency | Faster test execution and debugging. |
| Automation Readiness | Simplifies integration with CI/CD tools. |
| Error Analysis | Easy access to log files and server metrics. |
| Career Growth | High demand for testers skilled in Unix/Linux. |
According to a 2025 QA market survey, over 75% of testing environments are deployed on Linux servers. Testers familiar with Unix/Linux Testing are therefore more employable and valuable to organizations.
How H2K Infosys Helps You Master Unix/Linux Testing
At H2K Infosys, our QA testing training program is designed to make you job-ready with hands-on Unix/Linux experience.
What You’ll Learn:
- Core Unix/Linux commands for QA environments.
- Writing and executing shell scripts for automation.
- Handling test environments and logs.
- Integrating with tools like Jenkins, Selenium, and JMeter.
Our instructors provide real-world case studies, live projects, and continuous mentoring to prepare you for the Quality assurance tester training path.
Key Takeaways
- Unix/Linux Testing is essential for modern QA engineers.
- Shell scripting and automation enhance testing efficiency.
- Real-world testing often happens on Linux-based systems.
- Hands-on training like that offered by H2K Infosys can transform your QA career.
Conclusion
Unix/Linux Testing isn’t just a technical requirement, it’s a career advantage. By mastering these skills through QA testing training at H2K Infosys, you’ll gain the confidence to handle real-world testing challenges with ease.
Enroll today at H2K Infosys and elevate your QA career with practical Unix/Linux Testing expertise.
41 Responses
1. What is the difference between UNIX and Linux operating system?
UNIX is a command line operating system, which features some of the following capabilities: multitasking, portability, and multi-user computing. Linux is a command line operating system which is derived from Unix and is a continuation of Unix. Linux is not a fully developed operating system. Unix and Linux are both command line efficient operating systems that can be used to manage the servers.
2. How is testing done for Unix/Linux operating system?
The square brackets are used to defined the condition for test command.
Unlike Unix, the Linux test command checks the file types and compares all the values.
Unix Operating system is a command line operating system which is multi tasking, portable ,multi user command operating system where as linux operating systems is a continuation of unix operating system . Both are used for server based model. servers are huge storage which ensures high speed, multi tasking,ect.
The master control program of unix is a kernel which has total control over the system where as linux is also a kernel but not a completely developed operating system.
Unlike Unix, the Linux test command checks the file types and compares all the values.
Unix/Linux: Unix/Linux are command line efficient operating systems that can be used to manage the servers.
Difference: UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. UNIX is kernel and the kernel has full control over the entire system. It is having a subsystem that has services to file system handling, memory management, and start and stop programs.
Linux: is derived from Unix and is a continuation of unix. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source.
Testing on Unix and Linux operating systems is done through commands.
Unix is a command line operating systems used on servers, work stations and mobile devices. They are mainly applicable for client server model based software systems.
Linux is basically derived from Unix and is a continuation of Unix. Its distribution are very popular and healthiest. Linux is just a kernel and not a completely developed operating system.
Everything in UNIX or Linux is either a file or process. A process is a executing program identified by the unique code called PID- process identifier. A file is a collection of data. They all are created by users using text editors, running compilers etc.
What is the difference between UNIX and Linux operating system?
The primary difference is that Linux and Unix are two different Operating Systems though they both have some common commands.Linux primarily uses Graphical User Interface with an optional Command Line Interface. Unix primarily uses Command Line Interface.Linux OS is portable and can be executed in different Hard Drive. where as, Unix is not portable.Linux is more famous than Unix but Unix has its own users. While Linux is an open source, free to use operating system widely used in Home Based PC, Mobile Phones, Desktops, etc. , Unix is a proprietary operating system commonly used on large server systems, mainframes, expensive and high-end computer systems at big MNCs and institutions.
How testing is done for Unix/Linux operating system?
Testing on Unix/Linux operating system is done through commands.
Unix/Linux are command line operating systems used on servers, work stations and mobile devices. They are mainly applicable for client server model based software systems. Servers are huge systems that have huge memory, high speed, multiuser and network visibility. Hence servers require an efficient operating systems. Unix/linux are command line efficient operating systems that can be used to manage the servers.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system.
In manual testing for what purpose we use Linux/Unix ?
Or where we use Unix/Linux ?
he primary difference is that Linux and Unix are two different Operating Systems though they both have some common commands.
Let’s talk about Linux OS first.
The source code of Linux is freely available to it’s users. Check it out here.
Linux primarily uses Graphical User Interface with an optional Command Line Interface.
Linux OS is portable and can be executed in different hard drives.
Linux is very flexible and can be installed on most of the home based PCs.
Linux is used on home based PCs, Mobile Phones, Desktops, etc.The square brackets are used to defined the condition for test command.
Unlike Unix, the Linux test command checks the file types and compares all the values.
Different version of Linux are Ubuntu, Linux Mint, RedHat, Solaris, etc.
Linux installation is economical and doesn’t require much specific and high end hardware.
Now comes the UNIX OS.
The source code of Unix is not available for the general public.
Unix primarily uses Command Line Interface.
Unix is not portable.
Unix has a rigid environment of the hardware. Hence, cannot be installed on every other machine.
Unix is mainly used in Server Systems, Mainframes and High End Computers.
Different Versions of Unix are AIS, HP-UX, BSD, Iris, etc.
Unix installation is comparatively costlier as it requires more specific hardware circuitry.
Unix is developed by AT&T Developers.
2. Test is done by using command line in Unix / Linux
Unix/Linux are command line operating systems used on servers, work stations and mobile devices. They are mainly applicable for client server model based software systems. Servers are huge systems that have huge memory, high speed, multiuser and network visibility. Hence servers require an efficient operating systems. Unix/linux are command line efficient operating systems that can be used to manage the servers.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations. It is considered as a
Linux is a command line operating system which is derived from Unix and is a continuation of unix. Its distribution are very popular and healthiest. Linux is just a kernel and not a completely developed operating system.
What is the difference between UNIX and Linux operating system?
The main difference between Unix and Linux is that Unix is an operating system that
is most commonly used on the internet, servers, and workstations.
however, on the other hand, Linux is an open-source that is commonly used for the hardware and software of the computers.
How testing is done for the Unix/Linux operating system.
Testing on Unix/Linux operating system is done through the command line.
1.Difference between UNIX and Linux operating system
The master control program of UNIX is kernel and the kernel has full control over the entire system. It is having a subsystem that has services to file system handling, memory management, and start and stop programs.
Linux is a command line operating system which is derived from Unix and is a continuation of unix. Its distribution are very popular and healthiest. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source. The square brackets are used to defined the condition for test command.
2.Everything in UNIX or Linux is either a file or process. A process is a executing program identified by the unique code called PID- process identifier. A file is a collection of data. They all are created by users using text editors, running compilers etc.
1. What is the difference between UNIX and Linux operating system?
answer:
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time sharing configurations. whereas Linux is just a kernel and not a completely developed operating system.
Unlike Unix, the Linux test command checks the file types and compares all the values.
2. How testing is done for Unix/Linux operating system?
answer:
To test the UNIX or Linux shell command. If the file is specified by first positional parameter of shell procedure $1 doesn’t exists or is of size zero, the test command displays the message. If $1 exists and has size zero test command displays nothing. The shell procedure is given a few or two positional parameters or file specified by $1 doesn’t exists, than the shell procedure exists. If $1 exists has a size greater than 0 the test command displays nothing.
1) difference between UNIX and Linux operating system
a) linux: open source software development and free operating system , use in p.c, mobile phone, desktop
b) unix: which can be used by its copyright , used in server system and high end computers.
2)how testing done for unix and linux operating system?
Unix/linux are command line efficient operating systems that can be used to manage the servers.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system.
Linux is a command line operating system which is derived from Unix and is a continuation of unix.
Everything in UNIX or Linux is either a file or process. A process is a executing program identified by the unique code called PID- process identifier. A file is a collection of data. They all are created by users using text editors, running compilers etc.
1.UNIX is a command-line operating system, which features some of the following capabilities: multitasking, portability, and multi-user computing. Linux is a command-line operating system which is derived from Unix and is a continuation of Unix. Linux is not a fully developed operating system. Unix and Linux are both command line efficient operating systems that can be used to manage the servers
2. Testing on UNIX operating is done through the command.
A1. Unix and Linux are both command line operating systems. However, the master control program of Unix is kernel and the kernel has full control over the entire system. Whereas, Linux is derived from Unix and is a continuation of Unix.
A2. Unlike Unix, Linux test command checks the file types and compares all the values.
The primary difference is that Linux and Unix are two different Operating Systems though they both have some common commands. … Linux primarily uses Graphical User Interface with an optional Command Line Interface.
Linux refers to the kernel of the GNU/Linux operating system. More generally, it refers to the family of derived distributions.
Unix refers to the original operating system developed by AT&T. More generally, it refers to family of derived operating systems.
1) UNIX AND LINUX a command-line operating system. The master control program of UNIX is the kernel and the kernel has full control over the entire system. LINUX is derived from UNIX and is a continuation of UNIX. Its distribution is very popular and healthiest. LINUX is just a kernel and not a completely developed operating system. Everything in UNIX or Linux is either a file or process. A process is an executing program identified by the unique code called PID- process identifier. A file is a collection of data.
2) The square brackets are used to define the condition for the test command. Unlike Unix, the Linux test command checks the file types and compares all the values. UNIX or Linux is either a file or a process. A process is an executing program identified by the unique code called PID- process identifier. A file is a collection of data. They all are created by users using text editors, running compilers.
Unix is an OS where the source code is not available to all where Linux is open source based. Unix and Linux testing are performed using command line arguments and invocation of shell scripts.
What is the difference between UNIX and Linux operating system?
The primary difference is that Linux and Unix are two different Operating Systems though they both have some common commands.Linux primarily uses Graphical User Interface with an optional Command Line Interface. Unix primarily uses Command Line Interface.Linux OS is portable and can be executed in different Hard Drive. where as, Unix is not portable.Linux is more famous than Unix but Unix has its own users. While Linux is an open source, free to use operating system widely used in Home Based PC, Mobile Phones, Desktops, etc. , Unix is a proprietary operating system commonly used on large server systems, mainframes, expensive and high-end computer systems at big MNCs and institutions.
How testing is done for Unix/Linux operating system?
Testing on Unix/Linux operating system is done through commands.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system.
Linux is a command line operating system which is derived from Unix and is a continuation of unix,the master control of Unix is kernel and it has full control over the entire system.
What is the difference between UNIX and Linux operating system?
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. Unix/linux are command line efficient operating systems that can be used to manage the servers.Linux is a command line operating system which is derived from Unix and is a continuation of unix. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source.
How testing is done for Unix/Linux operating system?
Testing in UNIX is done with the help of commands after having a proper testing script.
What is the difference between UNIX and Linux operating system?
Linux source code is available to the general public whereas, in Unix, the source code is proprietary.
Linux is a Unix clone,behaves like Unix but doesn’t contain its code. Unix contain a completely different coding developed by AT&T Labs. Linux is just the kernel. Unix is a complete package of Operating system.
How testing is done for Unix/Linux operating system.
Unix/Linux are command line efficient operating systems that can be used to manage the servers.
UNIX : The master control program of UNIX is kernel and the kernel has full control over the entire system. It is having a subsystem that has services to file system handling, memory management, and start and stop programs.
Linux: Linux is a command line operating system Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system.
Linux is a command line operating system which is derived from Unix and is a continuation of Unix. It is assembled under the model of free and open source software.
How testing is done for Unix/Linux operating system?
Example: the test command checks file types and compares values. test is used as part of the conditional execution of shell commands.
Syntax: test expression or [ expression ] {notice the space between and after expression} both the commands produce the same result.
test 100 -gt 50 && echo “True” || echo “False”
This command will print the text “True” because 100 is greater than 50.
Without using test command same thing can be done as below:
[ 100 -gt 50 ] && echo “True” || echo “False”
Will print the text “True” because 100 is greater than 50.
Linux is just a kernel and Unix is a completely developed operating system.
UNIX is a command line operating system which are widely used in servers, workstations and mobile devices.
Linux is a Unix like computer operating system assembled under the model of free and open source software development and distribution.
Testing is done by command line. Everything in UNIX or Linux is either a file or process. A process is an executing program identified by the unique code called PID- process identifier. A file is a collection of data. They all are created by users using text editors, running compilers etc.
1.UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations. It is considered as a
It has characteristics like:
Usage of plain text for data storage
Hierarchical file system
Handling devices and some specific some kinds of inter-process communication
Employing a huge number of software tools
Multiple small, simpler and modular programs which can be threaded together.
LINUX is a command line operating system which is derived from Unix and is a continuation of Unix. Its distribution are very popular and healthiest. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source. The square brackets are used to defined the condition for test command
2.Unix/Linux are command line efficient operating systems that can be used to manage the servers & The square brackets are used to defined the condition for test command
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some
time – sharing configurations. Linux is a command line operating system which is derived from Unix and is a continuation of unix. Its distribution are very popular and healthiest. Linux is just a kernel and not a completely developed operating system.
Everything in UNIX or Linux is either a file or process. A process is a executing program identified by the unique code called PID- process identifier. A file is a collection of data. They all are created by users using text editors, running compilers etc.
Linux is a free and open-source operating system. Unix is a commercial product, offered by a variety of vendors each with its own variant, usually dedicated to its own hardware. It’s expensive and closed source. But Linux and Unix do more or less the same thing in the same way.
The square brackets are used to defined the condition for test command.
Unlike Unix, the Linux test command checks the file types and compares all the values.
1. Both UNIX and Linux are command line operating systems however Linux is a derivation and continuation of UNIX. Linux is also free and open source versus UNIX which is commercial. Linux is a kernel derived from UNIX and is not fully developed as of yet.
2. Square brackets are used to defined the condition for test command. Unlike Unix, the Linux test command checks the file types and compares all the values. Everything in UNIX or Linux is either a file or process.
1. What is the difference between UNIX and Linux operating system?
UNIX and Linux are both OS which earlier had only CLI(command line interface) but now also supports GUI. Unix is a commercial product. UNIX, itself is a complete OS as everything (all required application tied together) comes from a single vendor. It’s expensive and closed source.
On the other hand, Linux is a open source command line operating system which is derived from Unix and is a continuation of Unix.
2. How testing is done for Unix/Linux operating system.
The square brackets are used to define the test commands. Everything is either on a file or a process. We can identify the program through a unique code called PID process identifier.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. Linux is a command line operating system which is derived from Unix and is a continuation of unix. Unlike Unix, the Linux test command checks the file types and compares all the values.
1. What is the difference between UNIX and Linux operating system?
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations.
The master control program of UNIX is kernel and the kernel has full control over the entire system. It is having a subsystem that has services to file system handling, memory management, and start and stop programs.
Linux is a command line operating system which is derived from Unix and is a continuation of Unix. Its distribution is very popular and healthiest. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source. The square brackets are used to defined the condition for test command
2. How testing is done for Unix/Linux operating system?
To test the UNIX or Linux shell command. If the file is specified by first positional parameter of shell procedure $1 doesn’t exists or is of size zero, the test command displays the message. If $1 exists and has size zero test command displays nothing. The shell procedure is given a few or two positional parameters or file specified by $1 doesn’t exists, then the shell procedure exists. If $1 exists has a size greater than 0 the test command displays nothing. Unlike Unix, the Linux test
Unix/Linux are command line operating systems used on servers, work stations and mobile devices. They are mainly applicable for client server model based software systems. Servers are huge systems that have huge memory, high speed, multiuser and network visibility. Hence servers require an efficient operating systems. Unix/linux are command line efficient operating systems that can be used to manage the servers.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations. It is considered as a
1. What is the difference between UNIX and Linux operating system?
Unix/Linux are command line operating systems used on servers, work stations and mobile devices. They are mainly applicable for client server model based software systems. Servers are huge systems that have huge memory, high speed, multiuser and network visibility. Hence servers require an efficient operating systems. Unix/linux are command line efficient operating systems that can be used to manage the servers.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations. It is considered as a
It has characteristics like:
Usage of plain text for data storage
Hierarchical file system
Handling devices and some specific some kinds of inter-process communication
Employing a huge number of software tools
Multiple small, simpler and modular programs which can be threaded together.
The master control program of UNIX is kernel and the kernel has full control over the entire system. It is having a subsystem that has services to file system handling, memory management, and start and stop programs.
Linux is a command line operating system which is derived from Unix and is a continuation of unix. Its distribution are very popular and healthiest. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source. The square brackets are used to defined the condition for test command.
2. How testing is done for Unix/Linux operating system.
For example, to test the UNIX or Linux shell command. If the file is specified by first positional parameter of shell procedure $1 doesn’t exists or is of size zero, the test command displays the message. If $1 exists and has size zero test command displays nothing. The shell procedure is given a few or two positional parameters or file specified by $1 doesn’t exists, than the shell procedure exists. If $1 exists has a size greater than 0 the test command displays nothing. Unlike Unix, the Linux test command checks the file types and compares all the values.
1.What is the difference between UNIX and Linux operating system?
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations.
The master control program of UNIX is kernel and the kernel has full control over the entire system. It is having a subsystem that has services to file system handling, memory management, and start and stop programs.
Linux is a command line operating system which is derived from Unix and is a continuation of Unix. Its distribution is very popular and healthiest. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source. The square brackets are used to defined the condition for test command
2. How testing is done for Unix/Linux operating system?
To test the UNIX or Linux shell command. If the file is specified by first positional parameter of shell procedure $1 doesn’t exists or is of size zero, the test command displays the message. If $1 exists and has size zero test command displays nothing. The shell procedure is given a few or two positional parameters or file specified by $1 doesn’t exists, then the shell procedure exists. If $1 exists has a size greater than 0 the test command displays nothing. Unlike Unix, the Linux test
1. What is the difference between UNIX and Linux operating systems?
Unix/Linux are command line operating systems used on servers, workstations, and mobile devices. Linux is a command line operating system which is derived from Unix and is a continuation of Unix. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source.
2. How testing is done for Unix/Linux operating system?
Square brackets are used to defined the condition for test command. Unlike Unix, the Linux test command checks the file types and compares all the values. Everything in UNIX or Linux is either a file or process.
1. What is the difference between UNIX and Linux operating systems?
Unix/Linux are command line operating systems used on servers, workstations, and mobile devices. Linux is a command line operating system which is derived from Unix and is a continuation of Unix. Linux is just a kernel and not a completely developed operating system. Most of the software in Linux distribution is free and open source.
2. How testing is done for Unix/Linux operating system?
Square brackets are used to defined the condition for test command. Unlike Unix, the Linux test command checks the file types and compares all the values.
Difference between Unix and Linux Operating system
1. Unix primarily uses a command line interface
Linux primarily uses a Graphical User interface with an optional command line interface.
2, Unix is not portable
Linux OS is portable and can be executed in different hardware.
3. Unix cannot be installed on every other machine
Linux can be installed on most of the PC, mobile phones, Desktops, etc.
Testing done for UNIX/Linux
The square brackets are used to define the condition for the test command.
If the file is specified by the first positional parameter of the shell procedure the test command displays the message.
Unlike Unix, the Linux test command checks the file types and compares all the values.
UNIX is a command line operating system which is multitasking, portable, multi-user computer operating system. It has some time – sharing configurations.
Linux is a command line operating system which is derived from Unix and is a continuation of unix. Its distribution are very popular and healthiest.
to test the UNIX or Linux shell command. If the file is specified by first positional parameter of shell procedure $1 doesn’t exists or is of size zero, the test command displays the message. If $1 exists and has size zero test command displays nothing. The shell procedure is given a few or two positional parameters or file specified by $1 doesn’t exists, than the shell procedure exists. If $1 exists has a size greater than 0 the test command displays nothing. Unlike Unix, the Linux test command checks the file types and compares all the values.