Command_Line_Introduction

Command Line Introduction

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Back to Main

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Contents

0. Useful Commands
1. Info
2. Sudo
3. Shutdown
4. Alias
5. VIM

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- Useful Commands

• history - To view the list of commands executed in a terminal
  • CTRL-R activates the reverse-i-search to search for a command
• script - Capture a terminal work session in a file
  • To exit type exit o CTRL-D
• which pname - Lets you know which version of pname you are using

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- Info

• whoami - Indicate your username
• id - Information about the identity and the group to which it belongs
• who - Indicates who is currently connected to the machine

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- Sudo

Config file: /etc/sudoers

Configure sudo (add user username to sudoers) two ways:

• A:
  • Become root via su -
  • Launch the command visudo
  • Add the line username <tab> ALL=(ALL:ALL) <space> ALL
  • Type adduser username sudo
• B:
  • adduser username sudo
• To save changes logout and re-login

su - root
sudo -i - Open terminal session

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- Shutdown

shutdown [-h|-r] now

• -h shutdown
• -r restart
• -now when to perform the action

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- Alias

Useful for storing complex command lines into commands that are easier to invoke.

alias aliasname='commands'

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- VIM

TODO