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

Inline for loops in bash...

...will make you happy. Here's a code snippet:

$ for i in a b c; do echo "file"$i".txt"; done

filea.txt

fileb.txt

filec.txt