Nerdstock.org - command

From a command to a shell function

So you've written this brilliant shell

 #!/usr/bin/env bash

# This script is ~/dashprepender.sh. # It prepends dashes.

function prependDash() { input=$@ echo "- ${input}" }

find ${HOME} -type d -exec prependDash {} \;

 rob@freebsd$ ~/dashprepender.sh find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory find: prependDash: No such file or directory …

script, and now you've found that you can't pipe a command's output to a shell function…

Or can you…?

#!/usr/bin/env bash

# This script is ~/dashprepender.sh.
# It prepends dashes.

function prependDash() {
    input=$@
    echo "- ${input}"
}

find ${HOME} -type d -print | while read dir; do prependDash ${dir}; done

for dir in `find ${HOME} -type d -print`; do
    prependDash ${dir}
done

but this last one will get you into trouble if there are filenames with spaces.

Responses are welcomed:
rob[at]nerdstock.org

http://creativecommons.org/licenses/by-nc-sa/3.0/nl/deed.en