Some LaTeX stuff:

• write "et al." as et~al.\, or et~al. if it's followed immediately by punctuation such as a comma or bracket.

Handy bash thingies:

DU things (directory sizes)

view size of directories within current directory with

• du -hs ./* (-h for human readable, -s for summary, ./* because otherwise it just tells you size of current dir), or

• du -hd 1 (-d for depth to search down, with 1 being that depth).