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I'm trying to run the following command:
find . -iname '.#*' -print0 | xargs -0 -L 1 foobar where "foobar" is an alias or function defined in my .bashrc file (in my case, it's a function that takes one parameter). Apparently xargs doesn't recognize these as things it can run. Is there a clever way to remedy this?
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The xargs command builds and executes commands provided through the standard input. It takes the input and converts it into a command argument for another command. This feature is particularly useful in file management, where xargs is used in combination with rm , cp , mkdir , and other similar commands.
The -c flag to sh only accepts one argument while xargs is splitting the arguments on whitespace - that's why the double quoting works (one level to make it a single word for the shell, one for xargs).
GNU parallel is an alternative to xargs that is designed to have the same options, but is line-oriented. Thus, using GNU Parallel instead, the above would work as expected.
Bash Alias allows to aggregate multiple functions into a single command and also it avoids repetitive or large commands into a simple shortcut command.
Since only your interactive shell knows about aliases, why not just run the alias without forking out through xargs?
find . -iname '.#*' -print0 | while read -r -d '' i; do foobar "$i"; done If you're sure that your filenames don't have newlines in them (ick, why would they?), you can simplify this to
find . -iname '.#*' -print | while read -r i; do foobar "$i"; done or even just find -iname '.#*' | ..., since the default directory is . and the default action is -print.
One more alternative:
IFS=$'\n'; for i in `find -iname '.#*'`; do foobar "$i"; done telling Bash that words are only split on newlines (default: IFS=$' \t\n'). You should be careful with this, though; some scripts don't cope well with a changed $IFS.
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Using Bash you may also specify the number of args being passed to your alias (or function) like so:
alias myFuncOrAlias='echo' # alias defined in your ~/.bashrc, ~/.profile, ... echo arg1 arg2 | xargs -n 1 bash -cil 'myFuncOrAlias "$1"' arg0 echo arg1 arg2 | xargs bash -cil 'myFuncOrAlias "$@"' arg0 If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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