[bug #61009] xargs need option to immediately stop on command fail

URL:
  <https://savannah.gnu.org/bugs/?61009>

                 Summary: xargs need option to immediately stop on command
fail
                 Project: findutils
            Submitted by: None
            Submitted on: Wed 04 Aug 2021 08:50:38 AM UTC
                Category: xargs
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: 
        Originator Email: [email protected]
             Open/Closed: Open
                 Release: None
         Discussion Lock: Any
           Fixed Release: None

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Details:

Hello.

If we want xargs stop on command fail we need to do the next complex construct
with sh:

xargs -IX -n1 sh -c "cp -f X $IMGDIR_DST/X || exit 255"

instead of simply:

xargs -F -IX -n1 cp -f X $IMGDIR_DST/X

(imagine the -F turns on stop on command fail). This is simpler and less error
prone.

Thus, we can do in our scripts:

find . -type f | xargs -F -IX -n1 cp -f X $IMGDIR_DST/X || exit 1

Instead of more complex and error prone:

find . -type f | xargs -IX -n1 sh -c "cp -f X $IMGDIR_DST/X || exit 255" ||
exit 1




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