Basic Unix Cheat Sheet

Here’s a cheat sheet for some commonly used Unix command-line commands:

Navigation

• ls: List files and directories in the current directory
• cd: Change the current directory
• pwd: Print the current working directory

File Management

• touch: Create a new file
• cat: Display the contents of a file
• more: Display the contents of a file one page at a time
• less: Display the contents of a file, allowing for scrolling and searching
• head: Display the first few lines of a file
• tail: Display the last few lines of a file
• cp: Copy a file or directory
• mv: Move or rename a file or directory
• rm: Remove a file or directory
• mkdir: Create a new directory
• rmdir: Remove an empty directory

Search and Filter

• grep: Search for a pattern in a file or output
• find: Search for files or directories that match specified criteria
• sed: Search for and replace text within a file or output
• awk: Process and manipulate text data

System Information

• uname: Print system information, such as the operating system and kernel version
• whoami: Print the current user’s username
• ps: List the currently running processes
• top: Display real-time information about the system’s resource usage
• df: Display information about the file system disk space usage
• du: Display information about the disk space usage of files and directories

Networking

• ping: Test connectivity to a network host
• nslookup: Look up DNS information for a domain or host
• netstat: Display information about active network connections and open ports
• ssh: Connect to a remote system using SSH
• scp: Securely copy files between systems using SSH

These are just a few of the many command-line commands available in Unix. For more information on how to use these commands and others, you can refer to online resources and documentation.