Posts Tagged ‘bash’

Correct Way To Iterate Over Files In Bash

Because I keep forgetting, here’s a reminder to myself of the correct way to iterate through files and directories in bash, even considering spaces in filenames, whith a hat-tip to Thomas Howard Uphill: find . -type f|grep .ext$ |while read file do /do/something/to “$file” done Silly rabbit.

Count Arguments In A Bash Script

Another useful tip I’m sure most people will be familiar with, but in bash scripts $# stores the number of arguments passed to the script. Eg, combine with $@ (all arguments) for batch processing (what I used it for): foreach $arg in $@; do [stuff] [compare with $# to tell remaining items] done Very basic [...]