Are you tired of forgetting the parameters to xargs? How about writing a while loop, only to have
it steal your stdin and leave you stranded. Well, wish no more! The map utility is designed to
serve as replacement for the more complex functions of xargs.
Basic usage looks like this:
find . -name build -type d | map -j10 d 'echo Deleting $d && rm -r $d'The above shows an example of parallelizing certain tasks, while keeping a sane output (each worker locks the stdout before printing)
You can also get clever with map -e:
map -f hosts -e 'ssh $1 df -h' | awk '{print $1, $(NF-1)}'Outputs the <host, disk usage> pairs