Hello, tst is a shell script that does specify which interpreter should be used and therefore the system falls back to try /bin/sh.
However the script is using bash extensions ([ "$1" == "" ]) which won't work with *any* sh-type shell. Debian is using dash as /bin/sh and there an error is thrown, Centos is probably using bash. So this is not a bug but a user error. If you want to use bash-extension you'll need to take care that the script runs under bash by using a correct #!-line. Closing. ** Changed in: findutils (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to findutils in Ubuntu. https://bugs.launchpad.net/bugs/1793668 Title: xargs gives "[: err: unexpected operator" on Ubuntu but not Centos Status in findutils package in Ubuntu: Invalid Bug description: cd /tmp rm -Rf tst err echo 'if [ "$1" == "" ]; then echo "empty"; else cat $1; fi' > tst chmod +x tst echo "a" > err ls err | xargs ./tst # ./tst: 1: [: err: unexpected operator ./tst err # works fine, outputs 'a' On Ubuntu the error will be shown, on Centos it won't. The error looks to be incorrect. $ lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 $ xargs --version xargs (GNU findutils) 4.7.0-git Copyright (C) 2017 Free Software Foundation, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/findutils/+bug/1793668/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : email@example.com Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp