Unix cheat sheets

Peteris Krumins is at it again with two *nix cheat sheets that should help you explore your Unix-like system:

• GNU Coreutils Cheat Sheet
• Util-Linux Cheat Sheet

Not too long ago I wrote a shell script that gives you a brief description of every tool in your PATH:

#!/bin/sh

whatisthere () {
  for dir in `echo $PATH | sed 's/:/ /g'`; do
    for file in $dir/*; do
      base=`basename $file`
      desc=`whatis $base 2>&1`
      [ $? -eq 0 ] && echo $desc
    done
  done
}

whatisthere | sort | less -SR

Update: The electronic version of The Linux Command Line has been released for free under a creative commons license. Thanks for the tip Norman.