Linux commands for DevOps Engineer

DevOps engineers often work with various Linux commands to manage servers, deploy applications, and automate tasks. Here is a list of commonly used Linux commands for DevOps:

1. File and Directory Management:

   • ls: List files and directories.

   • cd: Change directory.

   • cp: Copy files or directories.

   • mv: Move or rename files and directories.

   • rm: Remove files or directories.

   • mkdir: Create a new directory.

2. Text Processing:

   • cat: Concatenate and display the content of files.

   • grep: Search for a pattern in files.

   • sed: Stream editor for filtering and transforming text.

   • awk: Pattern scanning and text processing tool.

3. File Permissions:

   • chmod: Change file permissions.

   • chown: Change file owner and group.

4. Package Management:

   • apt (Debian/Ubuntu): Advanced Package Tool.

   • yum (Red Hat/CentOS): Yellowdog Updater, Modified.

   • dnf (Fedora): Dandified Yum.

   • zypper (openSUSE): openSUSE package manager.

5. Process Management:

   • ps: Display information about running processes.

   • top: Display and update sorted information about processes.

   • kill: Terminate a process.

   • pkill: Signal processes based on their name.

6. System Information:

   • uname: Display system information.

   • df: Display disk space usage.

   • du: Display the disk usage of the specified directory.

   • free: Display amount of free and used memory in the system.

7. Networking:

   • ifconfig or ip: Display or configure network interfaces.

   • ping: Test the reachability of a host on a network.

   • traceroute: Trace the route that packets take to reach a network host.

   • netstat: Display network connections, routing tables, and interface statistics.

8. SSH:

   • ssh: Connect to a remote server securely.

   • scp: Secure copy files between hosts.