*nix
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Linux
- 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
Other software
Debian
X
Window Managers
Openbox
Networking
- route -n - display the host's networks and gateway
- /etc/hosts
- /etc/network/interfaces - ubuntu network interface settings
- /etc/resolv.conf - dns settings
- /etc/host.conf - dns resolve order
- /etc/dhcp3/dhclient.conf - overrides ubuntu server dns settings. change prepend option.
- /etc/dnsmasq.conf - dnsmasq settings
- dnsmasq configuration
- Subnet cheatsheet [2]
Cisco
Media
To check;
Specific
- sudo /etc/init.d/<service> restart - ubuntu, restart a service
- chown -R user:group . - change all and subitems [4]