Execute a command for every line in a file in bash

Another very handy bash snippet:

cat nodesToConsider.txt | while read in; do cp ../'layer0_inputGuess_n'$in'.png' .; done

Diagonal axis labels in R

I'm dumping a relevant code snippet here because I know I will want to come back to it again:
(found here)

> bp = barplot(data$informativeness[1:len], axes=FALSE, axisnames=FALSE)
> text(bp, par("usr")[3], labels = data$feature[1:len], srt = 45, adj = c(1.1,1.1), xpd = TRUE, cex=.9)
> axis(2)

For those times you have to turn in source code on a problem set...

I just discovered http://www.planetb.ca/syntax-highlight-word and it makes things much nicer (it'll do syntax highlight in a way that can be copied into Word)