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32 lines
951 B
Markdown
32 lines
951 B
Markdown
# `xargs`
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## Table of contents <!-- omit in toc -->
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1. [TL;DR](#tldr)
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## TL;DR
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```sh
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# print the command to be executed and immediately start it
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echo 1 2 3 4 | xargs -t mkdir
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# print the command to be executed and ask for confirmation before starting it
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echo 1 2 3 4 | xargs -p rm -rf
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# spawn 5 clamscan processes at a time
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# each process being given 1 argument from the list in input
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find ~ -type f -printf "'%p' " | xargs -P 5 -n 1 clamscan
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# replace a given string with arguments read from input
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# useful to insert the arguments in the middle of the command to execute
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find ~ -type d -name ".git" -exec dirname {} + | xargs -I // git -C "//" pull
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# Use aliases as commands.
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# The 'BASH_ALIASES' array works only in BASH.
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# The 'aliases' array works only in ZSH.
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echo 1 2 3 4 | xargs "${BASH_ALIASES[my-alias]}"
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echo 1 2 3 4 | xargs $aliases['my-alias']
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```
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[an opinionated guide to xargs]: https://www.oilshell.org/blog/2021/08/xargs.html
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