Shell Scripting commands are very important for DevOps engineers, Linux administrators, cloud engineers and automation professionals. Most modern DevOps environments use Linux systems, automation workflows, CI/CD pipelines, Kubernetes clusters and cloud infrastructure. To manage these environments well professionals need to know how to use Shell programming and Linux command-line tools.
Shell scripting helps tasks that are done over and over, improve how things are done, reduce mistakes and make managing infrastructure faster. Whether you are putting applications on servers, watching servers, managing Docker containers or automating Kubernetes operations, Shell Scripting commands are very important in DevOps workflows.
As more companies use cloud-native technologies and automation-first infrastructure, the need for DevOps engineers with strong Shell programming skills is growing very fast.
In this guide, we will look at the 20 Shell Scripting commands every DevOps engineer should know in 2026.
What is Shell Programming?
Shell programming is writing scripts that automate tasks in Linux and Unix operating systems. A shell is like a middleman between the user and the operating system. Instead of typing commands one by one, engineers can put many commands together in a script and run them automatically.
Some popular Linux shells are:
- Bash
- Sh
- Zsh
- Korn Shell
Bash is the commonly used shell for Shell programming and DevOps automation.
Why Shell Scripting Commands Are Important in DevOps
DevOps engineers use Shell Scripting commands for things including:
- Automating CI/CD pipelines
- Setting up infrastructure
- Managing Kubernetes
- Automating Docker
- Sending alerts
- Managing cloud resources
- Maintaining servers
- Automating backups
- Looking at logs
- Automating security
Shell programming is still very important because it works directly with Linux systems, cloud platforms, Kubernetes environments and DevOps tools.
20 Shell Scripting Commands Every DevOps Engineer Should Know
1. pwd – Show Current Directory
The pwd command shows where you are in the directory.
pwd
This command helps DevOps engineers know where they are in the directory while navigating Linux systems.
2. ls – List Files and Directories
The ls command shows files and folders.
ls
You can use options like:
ls -l
ls -a
This is one of the most used Shell Scripting commands in Linux administration.
3. cd – Change Directory
The cd command lets you move between directories.
cd /var/log
This command is necessary for navigating Linux servers.
4. mkdir – Make Directories
The mkdir command makes directories.
mkdir backups
This is useful for organizing files and deployment resources.
5. rm – Remove Files and Directories
The rm command deletes files and folders.
rm file.txt
To remove directories use:
rm -rf foldername
DevOps engineers use this command carefully because it deletes files forever.
6. cp – Copy Files
The cp command copies files and directories.
cp source.txt destination.txt
This command is widely used in deployment and backup scripts.
7. mv – Move or Rename Files
The mv command moves files or renames them.
mv old.txt new.txt
This is useful in automation workflows and release management.
8. echo – Show Output
The echo command prints text to the terminal.
echo "Deployment Successful"
This command is commonly used in Shell programming scripts for notifications and debugging.
9. cat – Show File Content
The cat command shows what is in a file.
cat config.txt
This is useful for looking at logs and configuration files.
10. grep – Search for Text
The grep command searches for text inside files.
grep "ERROR" logs.txt
This command is necessary for looking at logs and troubleshooting.
11. chmod – Change File Permissions
The chmod command changes file permissions.
chmod +x script.sh
DevOps engineers use this command to make scripts executable.
12. chown – Change File Ownership
The chown command changes who owns a file.
chown user:user file.txt
This is important for managing secure Linux environments.
13. ps – Show Running Processes
The ps command shows what processes are running.
ps aux
This is useful for watching applications and troubleshooting servers.
14. top – Monitor System Performance
The top command shows how the system is performing in real time.
top
DevOps teams use this command to watch CPU and memory usage.
15. df – Check Disk Space
The df command shows how much disk space is used.
df -h
This is important for watching infrastructure and planning for capacity.
16. du – Check Directory Size
The du command shows how big a directory is.
du -sh /var/log
This is useful for finding files and folders that use a lot of storage.
17. find – Search for Files
The find command searches for files and directories.
find / -name "docker-compose.yml"
This command is heavily used in Shell programming automation scripts.
18. tar – Archive Files
The tar command makes archives.
tar -czvf backup.tar.gz folder/
This command is used extensively for backups and deployments.
19. curl – Transfer Data from URLs
The curl command interacts with APIs and web services.
curl https://example.com
This command is necessary for DevOps automation and API testing.
20. ssh – Secure Remote Access
The ssh command connects securely to servers.
ssh user@server-ip
This is one of the most important Shell Scripting commands for server management.
Shell Programming in Real DevOps Workflows
Shell programming is used in every stage of DevOps workflows.
Examples include:
- Automating CI/CD pipelines
- Automating Kubernetes deployment
- Managing Docker containers
- Watching server health
- Setting up cloud infrastructure
- Automating backups
- Doing security checks
- Managing logs
- Scheduling cron jobs
Most production DevOps systems still rely heavily on Shell Scripting commands.
Best Practices for Shell Scripting
To write Shell programming scripts, DevOps engineers should follow these best practices:
- Use names that make sense for variables
- Add comments to scripts
- Handle errors properly
- Keep scripts reusable
- Test scripts before using them in production
Challenges Beginners Face in Shell Programming
Many beginners struggle with:
- Linux command syntax
- File permissions
- Debugging scripts
- Using variables and loops
- Automation logic
- Handling errors
The best way to get better at Shell programming is to practice regularly.
Future of Shell Scripting Commands
With the growth of Python, AI automation and infrastructure-as-code tools, Shell Scripting commands are still very important in DevOps.
New trends include:
- Automating Kubernetes
- Managing cloud-native infrastructure
- Using AI to automate
- Integrating infrastructure as code
- Automating security
- Managing hybrid clouds
Shell programming will continue to be a useful and widely used automation skill in IT.
Conclusion
Learning Shell Scripting commands is essential for every DevOps engineer. From Linux administration and cloud management to CI/CD automation and Kubernetes operations, Shell programming makes modern infrastructure workflows possible.
By mastering these 20 Shell Scripting commands, professionals can automate tasks, reduce the work needed to manage systems, improve system reliability and become more efficient in DevOps environments.
As cloud computing, Kubernetes and automation technologies continue to evolve, Shell programming will remain a critical skill for IT professionals worldwide.
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Frequently Asked Questions (FAQs)
1. What are Shell Scripting commands?
Shell Scripting commands are Linux or Unix commands used inside scripts to automate tasks and system operations.
2. Why is Shell programming important in DevOps?
Shell programming helps automate deployments, monitoring, CI/CD pipelines, infrastructure management and cloud operations.
3. Which shell is commonly used for Shell programming?
Bash is the commonly used shell in Linux and DevOps environments.
4. Is Shell Scripting difficult for beginners?
No, beginners can start with Linux commands and gradually learn scripting concepts through practice.
5. Are Shell Scripting commands relevant in 2026?
Yes, Shell Scripting commands are still widely used in Linux administration, Kubernetes, cloud computing, automation and DevOps workflows.
6. Which industries use Shell programming?
Industries including cloud computing, cybersecurity, software development, DevOps, finance, healthcare and telecom use Shell programming extensively.
