Skip to content

Latest commit

 

History

History
100 lines (59 loc) · 2.99 KB

linux_cli.md

File metadata and controls

100 lines (59 loc) · 2.99 KB

CLI Notes

  • "chmod" filenameChange the file permissions. Specifications = u user, g group, o other, + add permission, - remove, r read, w write,x execute.

  • "chown" to change the ownership user for a file

  • "chgrp" to change the primary group ownership

  • dpkg -lOutput a list of all installed packages on a Debian-based system.

  • dpkg -L packageNameWill list out the files installed and path details for a given package on Debian.

  • dpkg -l | grep -i Return all .deb installed packages with irrespective of cases.

  • less /var/lib/dpkg/available Return descriptions of all available packages.

  • Netcat is a tool that can help you read or write data over the internet and is called “The Swiss Army Knife of Information Security” by its fans.

  • “sudo” or “SuperUserDO”.

  • To link files, use ln -s $PWD/file (the source) $HOME/file (the dist).

|Docker|

  • docker run -it ubuntu
  • docker ps -a
  • docker start "containername"
  • docker attach "containername"
  • exit
  • ctrl +pq to dettach container without stoping it.
  • docker exec -it myimage
  • docker rm
  • docker container prune
  • su adduser username
  • su deluser username
  • whoami
  • su - username (change bttwin users)
  • exit
  • apropos
  • watch: repeat a command in certain intervals
  • && tai ;: chain several commands
  • alias: define an alias for a command. For example you can define a shorter version for a long and complicated command.
  • &: ending a command with this will make sure the command line will not be locked as the process will be moved to the background
  • history: view your command history
  • Ctrl + r: find commands you have run previously

Command Description

  • whoami Displays current username.

  • id Returns users identity

  • hostname Sets or prints the name of current host system.

  • uname Prints basic information about the operating system name and system hardware.

  • The w command is primarily used to display the details of users who are currently logged in to a system and their transactions.

  • pwd Returns working directory name.

  • ifconfig The ifconfig utility is used to assign or to view an address to a network interface and/or configure network interface parameters.

  • ip Ip is a utility to show or manipulate routing, network devices, interfaces and tunnels.

  • netstat Shows network status.

  • ss Another utility to investigate sockets.

  • ps Shows process status.

  • who Displays who is logged in.

  • env Prints environment or sets and executes command.

  • lsblk Lists block devices.

  • lsusb Lists USB devices

  • lsof Lists opened files.

  • lspci Lists PCI devices.

  • The uptime command displays the time from when a system started running.

  • The last command displays the history of user log in and log out, along with the actual time and date.

  • cmd for help: info/apropos/whatis/

ssh [username]@[IP address]

  • Inside the script, the $1 variable references the first argument in the command line, $2 the second argument and so forth.