Computing

Apt

Includes handy things like

• find which package contains empheq.sty with apt-file search empheq.sty

xmodmap

To remap the left and right arrow of Lacra's pointer to the down and right arrows, respectively, did
xmodmap -e "keycode 117 = Right" xmodmap -e "keycode 112 = Down" found the keycodes useing xev. This list of symbol names may be useful: [1]

Caltech

Pam Fong's math computing stuff: [2]