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44 lines
1.7 KiB
Plaintext
44 lines
1.7 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# xargs
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> Execute a command with piped arguments coming from another command, a file, etc.
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> The input is treated as a single block of text and split into separate pieces on spaces, tabs, newlines, and end-of-file.
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> See also: `parallel`.
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> More information: <https://www.gnu.org/software/findutils/manual/html_mono/find.html#Invoking-xargs>.
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- Run a command using the input data as arguments:
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`{{arguments_source}} | xargs {{command}}`
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- Run multiple chained commands on the input data:
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`{{arguments_source}} | xargs sh -c "{{command1}} && {{command2}} | {{command3}}"`
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- Gzip all files with `.log` extension taking advantage of multiple threads (`-print0` uses a null character to split file names and `--null` uses it as delimiter):
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`find . -name '*.log' -print0 | xargs {{[-0|--null]}} {{[-P|--max-procs]}} {{4}} {{[-n|--max-args]}} 1 gzip`
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- Execute the command once per argument:
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`{{arguments_source}} | xargs {{[-n|--max-args]}} 1 {{command}}`
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- Execute the command once for each input line, replacing any occurrences of the placeholder (here marked as `_`) with the input line:
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`{{arguments_source}} | xargs -I _ {{command}} _ {{optional_extra_arguments}}`
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- Parallel runs of up to `max-procs` processes at a time; the default is 1. If `max-procs` is 0, xargs will run as many processes as possible at a time:
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`{{arguments_source}} | xargs {{[-P|--max-procs]}} {{max-procs}} {{command}}`
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- Prompt user for confirmation before executing command (confirm with `y` or `Y`):
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`{{arguments_source}} | xargs {{[-p|--interactive]}} {{command}}`
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- Allow the command to access the terminal for interactive input:
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`{{arguments_source}} | xargs {{[-o|--open-tty]}} {{command}}`
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