*nix

• Inputoutput
• Shell
• Vim
• Git
• Irssi
• Weechat
• Android

Linux

• IBM developerWorks: Linux [1]

• tuXfiles - Linux help
• GNU/Linux Practice Note
• Linux Commands - A practical reference
• Linux Resources

• commandlinefu.com
• shortcutworld.com - keyboard shortcuts wiki - chrome

• The Art of Unix Programming Eric Steven Raymond

Tools and help

• sudo and /etc/sudoers
• find
• lsof
• World's best introduction to sed
• Awk
• http://www.anchor.com.au/blog/2011/08/awesome-but-often-unknown-linux-commands-and-tools/
• apt-fast
• regex cheatsheet

• Linux, Clocks, and Time
  • tzconfig / dpkg-reconfigure tzdata

• man; auditd

Other software

• Funtoo project
• calcurse
• http://kmandla.wordpress.com/software/

Debian

• Backports

X

• x11vnc
  • Arch Linux wiki: x11vnc

Window Managers

Openbox

• An Openbox Guide

Networking

• Ubuntu Server Guide > Network Configuration
• Linux DNS Lookup Command - host & dig

• route -n - display the host's networks and gateway

• /etc/network/interfaces - ubuntu network interface settings
• /etc/resolv.conf - dns settings
• /etc/dhcp3/dhclient.conf - overrides ubuntu server dns settings. change prepend option.
• /etc/dnsmasq.conf - dnsmasq settings
• dnsmasq configuration
• Subnet cheatsheet [2]

Cisco

• Cisco IOS cheatsheet
• Cisco Router Configuration Tutorial [3]
• CCNA Quiz Topics

Media

To check;

• http://www.reddit.com/r/archlinux/comments/n1kyh/what_are_some_good_lightweight_media_players/

Specific

• sudo /etc/init.d/<service> restart - ubuntu, restart a service
• chown -R user:group . - change all and subitems [4]