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takeshin
Asked: 2010-09-02 02:49:49 +0800 CST

How to filter file list piped to xargs?

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My command: git show --pretty="format:" --name-only returns list of files. Then I use xargs to run a shell script on those files:

git show --pretty="format:" --name-only  | xargs -i phpmd $dir/'{}' text codesize,unusedcode,naming

However, I'd like to run that xargs command only on files with .php extension. How to filter the unwanted files?

scripting bash

2 Answers

  1. Best Answer
    ... | grep '\.php$' | ...
    • 5

  2. If your filenames may contain space or quotes, you should use GNU Parallel http://www.gnu.org/software/parallel/ instead of xargs as xargs can lead to nasty surprises because of the separator problem http://en.wikipedia.org/wiki/Xargs#The_separator_problem:

    git show --pretty="format:" --name-only  | grep '\.php$' | parallel phpmd $dir/{} text codesize,unusedcode,naming

    GNU Watch the intro video for GNU Parallel to learn more: http://www.youtube.com/watch?v=OpaiGYxkSuQ

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