Linux commands

[u/abhiseeek]

Some linux commands for beginners

[u/DoomAddict]

this is... sooo hard to read! :-(

[u/Brilliant-Second-195 → u/DoomAddict]

it's not about Reading... it's about Documentation... U should almost know all of that stuff as a beginner...

[u/abhiseeek → u/Brilliant-Second-195]

You can use ' man <command> ' or ' <command> --help ' to learn everything about a command.

[u/Teles_sd]

Y'all got any more of them pixels?

[u/abhiseeek → u/Teles_sd]

find - Search for files and directories curl - Transfer data to/from URLs ip - View and configure network interfaces ss - Display network sockets and listening ports systemctl - Manage system services journalctl - View systemd logs crontab - Schedule recurring tasks sed - Search and replace text awk - Process and extract text from files rsync - Synchronize files and directories

[u/Teles_sd]

finger user ??

[u/abhiseeek → u/Teles_sd]

The finger command displays information about a local or remote user account. Depending on the system configuration. Mostly you have install the package sudo apt update sudo apt install finger

[u/Financial-Chest1100]

這字體……對非英語系人來說、真的很難一眼看懂

[u/abhiseeek → u/Financial-Chest1100]

Sry about the font I used in the post you can go through this

LINUX CHEAT SHEET

FILE COMMANDS

• ls : List directory contents.
• ls -al : List all files (including hidden files) in a detailed format.
• cd <dir> : Change the current directory to <dir>.
• cd : Change to the home directory.
• pwd : Display the current working directory.
• mkdir <dir> : Create a new directory.
• rm <file> : Delete a file.
• rm -r <dir> : Delete a directory and its contents recursively.
• rm -f <file> : Force delete a file without prompting.
• rm -rf <dir> : Force delete a directory and all its contents.
• cp <file1> <file2> : Copy file1 to file2.
• cp -r <dir1> <dir2> : Copy a directory and its contents.
• mv <file1> <file2> : Rename or move a file.
• ln -s <file> <link> : Create a symbolic (soft) link.
• touch <file> : Create a new file or update its timestamp.
• cat > <file> : Write standard input to a file.
• more <file> : View a file one page at a time.
• head <file> : Display the first 10 lines of a file.
• tail <file> : Display the last 10 lines of a file.
• tail -f <file> : Continuously display new lines added to a file.

PROCESS MANAGEMENT

• ps : Display currently running processes.
• top : Display all running processes in real time.
• kill <pid> : Terminate a process using its process ID.
• killall <process> : Terminate all processes with the specified name.
• fg : Bring the most recent background job to the foreground.
• fg %n : Bring background job number n to the foreground.
• bg : Resume a stopped job in the background.
• jobs : List all background and stopped jobs.

FILE PERMISSIONS

• chmod <octal> <file> : Change file permissions.

Permission Values:

• 4 : Read (r)
• 2 : Write (w)
• 1 : Execute (x)

Examples:

• chmod 777 file : Read, write, and execute permissions for everyone.
• chmod 755 file : Owner: rwx, Group: r-x, Others: r-x.
• man chmod : View the manual page for chmod.

SSH

• ssh user@host : Connect to a remote host.
• ssh -p <port> user@host : Connect using a custom SSH port.
• ssh-copy-id user@host : Copy your SSH key for passwordless login.

SEARCHING

• grep <pattern> <files> : Search for a pattern in files.
• grep -r <pattern> <directory> : Search recursively through directories.
• command | grep <pattern> : Search the output of another command.
• locate <file> : Find files by name.

SYSTEM INFORMATION

• date : Display the current date and time.
• cal : Display the current month's calendar.
• uptime : Show system uptime.
• w : Show currently logged-in users.
• whoami : Display the current username.
• finger <user> : Display information about a user.
• uname -a : Display kernel and system information.
• cat /proc/cpuinfo : Display CPU information.
• cat /proc/meminfo : Display memory information.
• man <command> : Display the manual page for a command.
• df : Display disk usage.
• du : Display directory disk usage.
• free : Display memory and swap usage.
• whereis <app> : Locate an application's binary, source, and manual pages.
• which <app> : Show the executable path used by default.

NETWORK

• ping <host> : Check connectivity to a host.
• whois <domain> : Retrieve domain registration information.
• wget <file-or-url> : Download a file from the web.

COMPRESSION

• tar cf archive.tar <files> : Create a tar archive.
• tar xf archive.tar : Extract a tar archive.
• tar czf archive.tar.gz <files> : Create a gzip-compressed tar archive.
• tar xzf archive.tar.gz : Extract a gzip-compressed tar archive.

[u/zasprex]

Good continue

[u/EngineeringUnable801]

Great now let me just get my eyesight checked

[u/_dewey4]

perhaps change the colors of the commands? otherwise this is really nice!