Here are 50 commonly used Linux commands in DevOps:

• ls - List directory contents
• cd - Change directory
• pwd - Print working directory
• mkdir - Make directory
• rm - Remove files or directories
• cp - Copy files or directories
• mv - Move or rename files or directories
• touch - Create an empty file or update timestamps
• cat - Concatenate and display file contents
• grep - Search for patterns in files
• find - Search for files and directories
• chmod - Change file permissions
• chown - Change file ownership
• ps - Display information about running processes
• top - Display system processes in real-time
• kill - Terminate processes by PID or name
• df - Display disk space usage
• du - Display file and directory disk usage
• tar - Create or extract compressed archives
• gzip - Compress or decompress files
• wget - Download files from the internet
• curl - Transfer data to or from a server
• ssh - Secure Shell for remote access
• scp - Securely copy files between hosts
• rsync - Synchronize files and directories between hosts
• systemctl - Control system services (systemd)
• journalctl - Query and display system logs
• ifconfig - Display network interface information
• netstat - Display network connections, routing tables, and more
• traceroute - Trace the route packets take to a destination
• ping - Send ICMP echo requests to test network connectivity
• hostname - Display or set the system's hostname
• uname - Display system information
• date - Display or set the system date and time
• who - Display information about logged-in users
• whoami - Display the current username
• id - Display user and group information
• sudo - Execute commands with superuser privileges
• su - Switch to another user account
• history - Display command history
• tail - Display the end of files
• head - Display the beginning of files
• less - View file contents interactively
• vi or vim - Text editor for editing files
• nano - Simple text editor
• echo - Display text or variables
• awk - Text processing tool for pattern scanning and processing
• sed - Stream editor for text manipulation
• cut - Extract sections from lines of files
• sort - Sort lines of text files

These commands are essential for managing and troubleshooting Linux systems in a DevOps environment.