Linux Commands

Linux Commands that I rarely use and often forget.

pwd = (Print Working Directory) Displays the current directory you're in.

nmap = (Network Map) Utility that displays open network ports.
Basic usage: nmap 192.168.0.1

grep = Hard to explain, Filtering utility.
Basic usage: grep 'FilterString' filename
Usefull grep options:

-i 'FilterString'   =   case insensitive
-b #                =   Display # number of lines BEFORE a match
-a #                =   Display # number of lines AFTER a match
-v                  =   Invert Match or Exclusion
['FilterString1'\|'FilterString2'\|'FilterString3']  Multiple Filters

du = List the size of a file or Directory
Basic usage: du -hs <file or dir>
Usefull du options:

-h                  = human readable
-s                  = summarize (Display only total for each arguement)

More to come...