Scott Murphy

Shell Shortcuts

Ctrl-u Clear line
Ctrl-a Move to beginning of line
Ctrl-e Move to end of line
Ctrl-r Revere search history
Ctrl-l Clear screen/scroll
Ctrl-z Takes an executing process. Stops it and gives you a job # (From here run fg to bring it back or bg to let in run in the back ground. 'jobs -l' to get process id.)

Command-k (OSX) Clear scrollback buffer/screen.

Commands
screen - Set up multiple screens within same terminal. Save/Resume shell (Very useful if you lose a remote connection)
Control+a then ? Help mode
Control+a then c New Screen window
Control+a then [ Copy Mode (Good for scrolling back through history) (] to exit)
Control+a then S Split screen
Control+a then X Remove current frame (Split Screen Mode)
Control+a then TAB Switch between screens
screen -e xy # To change the default command key screen -e ^Xx changes it from control+a to control+x
The equivalent of putting "escape ^Xx" in a ~/.screenrc file

top - Memory/Cpu/System stats
ps -aux Show whats running with some stats
ls -Z Find out SELinux permissions on files
uname -a Print system information
dmesg|less Scroll through all the startup messages (kernel ring buffer).
time COMMAND_HERE Gives you the time it took to run COMMAND_HERE
kill -9 Kills a process when kill by itself does not work
!! run last command
sudo !! run last command as sudo

Ubuntu/Debian:
aptitude search PACKAGENAME - Search for a package to install
apt-get install - Install a package
apt-get upgrade - Upgrades all packages out of date. Will not upgrade packages that have dependent conflicts.
apt-get dist-upgrade - Upgrades all packages out of date and will intelligently install new/uninstall old packages that prohibit upgrade.

VIM

dd Delete line
x Delete single character
^ Move to beginning of line
$ Move to end of line

Search for a particular class in a bunch of jars. Let's say you are looking for the EnvironmentAware class.
for f in *.jar; do echo 'Looking for EnvironmentAware in '$f; unzip -t $f; done |grep EnvironmentAware

Safari Text Area Tab (OSX)
Control+Option+Tab