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@@ -1,19 +1,20 @@
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# xargs
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-> Execute a command with piped arguments.
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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 arguments on spaces, tabs, newlines and end-of-file.
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-- Main use:
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+- Main usage pattern:
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-`{{arguments}} | xargs {{command}}`
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+`{{arguments_source}} | xargs {{command}}`
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-- Specific example: delete all files that start with 'M':
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+- Delete all files with a `.backup` extension:
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-`find . -name 'M*' | xargs rm`
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+`{{find . -name '*.backup'}} | xargs {{rm -v}}`
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-- Handle whitespace in arguments:
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+- Convert newlines in the input into NUL (`\0`) characters, and split on those only (useful if the input to xargs contains spaces):
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-`{{arguments_null_terminated}} | xargs -0 {{command}}`
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+`{{arguments_source}} | tr '\n' '\0' | xargs -0 {{command}}`
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-- Insert arguments at chosen position, using '%' as the placeholder marker:
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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}} | xargs -I '%' {{command}} % {{extra_arguments}}`
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+`{{arguments_source}} | xargs -I _ {{command}} _ {{optional_extra_arguments}}`
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