This namespace contains documentation for the most commonly used Linux commands. Navigate the sections below to explore different categories of commands.

• pwd: Displays the current working directory.
  1. Example: `pwd`

• cd: Changes the current directory.

1. Example: `cd /home/user/`

• ls: Lists files and directories.

1. Example: `ls -l` (detailed view)
2. Example: `ls -a` (includes hidden files)

• tree: Displays the directory structure as a tree.

1. Example: `tree /home/user/`

• cp: Copies files or directories.
  1. Example: `cp file.txt /path/to/destination/`

• mv: Moves or renames files and directories.

1. Example: `mv file.txt new_file.txt`

• rm: Removes files or directories.

1. Example: `rm file.txt`
2. For directories: `rm -r directory/`

• touch: Creates empty files or updates the access time.

1. Example: `touch new_file.txt`

• cat: Displays the content of a file.

1. Example: `cat file.txt`

• more: Displays file content one page at a time.

1. Example: `more file.txt`

• less: Similar to more, but allows more flexible navigation.

1. Example: `less file.txt`

• head: Displays the first few lines of a file.

1. Example: `head file.txt`

• tail: Displays the last few lines of a file.

1. Example: `tail file.txt`

• chmod: Changes file or directory permissions.

1. Example: `chmod 755 file.txt`

• chown: Changes the ownership of a file or directory.

1. Example: `chown user:group file.txt`

• ps: Displays running processes.
  1. Example: `ps aux`

• top: Displays running processes in real-time.

• kill: Terminates a process.

1. Example: `kill 1234` (where 1234 is the PID of the process)

• df: Displays disk space usage.

1. Example: `df -h` (with human-readable units)

• du: Displays disk usage of files and directories.

1. Example: `du -sh /directory`

• free: Displays free and used memory.

1. Example: `free -h`

• uptime: Displays how long the system has been running.

• reboot: Reboots the system.

• shutdown: Shuts down the system.

1. Example: `shutdown -h now`

• ping: Checks connectivity to another host.
  1. Example: `ping google.com`

• ifconfig: Displays network interfaces and their configuration.

1. Example: `ifconfig`

• ip: Configures and displays network interfaces.

1. Example: `ip a`

• netstat: Displays network connections and statistics.

1. Example: `netstat -tuln`

• wget: Downloads files from the web.

1. Example: `wget http://example.com/file.zip`

• curl: Makes HTTP requests.

1. Example: `curl http://example.com`

• tar: Archives and extracts files.
  1. Example to compress: `tar -czvf archive.tar.gz /directory/`
  2. Example to extract: `tar -xzvf archive.tar.gz`

• zip: Compresses files.

1. Example: `zip archive.zip file1.txt file2.txt`

• unzip: Extracts zip files.

1. Example: `unzip archive.zip`

• gzip: Compresses files into .gz format.

1. Example: `gzip file.txt`

• gunzip: Extracts .gz files.

1. Example: `gunzip file.txt.gz`

• useradd: Creates a new user.
  1. Example: `useradd new_user`

• usermod: Modifies user properties.

1. Example: `usermod -aG sudo user`

• passwd: Changes a user's password.

1. Example: `passwd user`

• whoami: Displays the current user name.

• id: Displays user and group information.

• groups: Displays the groups a user belongs to.

1. Example: `groups user`

• find: Searches for files and directories.
  1. Example: `find /path -name “*.txt”`

• locate: Locates files quickly using a database.

1. Example: `locate file.txt`

• grep: Searches for text within files.

1. Example: `grep “text” file.txt`

• man: Displays the manual page for a command.
  1. Example: `man ls`

• history: Displays the command history.

• alias: Creates an alias for a command.

1. Example: `alias ll='ls -l'`

• clear: Clears the terminal screen.

- [Linux Documentation](https://www.kernel.org/doc/) - [Man Pages](https://man7.org/linux/man-pages/)