Fish will output an Unknown command error for each argument inside a subshell if the actual command is not found.
~> fish -c 'echs 1 2 3'
fish: Unknown command 'echs'
fish: Unknown command '1'
fish: Unknown command '2'
fish: Unknown command '3'
fish:
echs 1 2 3
^
This error made me waste some time today because I was running fish -c from Ansible, and I thought there was a bug in my code that made each argument run in a subshell, while it was just the error output that was strange.
It doesn't try to run each argument as a command, though:
~> fish -c 'echs echo'
fish: Unknown command 'echs'
fish: Unknown command 'echo'
fish:
echs echo
^
Behaviour on Fish 2.7.1 (well, I guess Unknown command 'echs' would be easier to understand):
fish: Unknown command 'echs 1 2 3'
fish:
echs 1 2 3
^
Requested information:
~> fish --version
fish, versão 3.0.0
~> echo $version
3.0.0
~> uname -a
Linux laptop 4.15.0-36-generic \#39-Ubuntu SMP Mon Sep 24 16:19:09 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
~> echo $TERM
xterm-256color
~> sh -c 'env HOME=$(mktemp -d) fish -c "echs 1 2 3"'
fish: Unknown command 'echs'
fish: Unknown command '1'
fish: Unknown command '2'
fish: Unknown command '3'
fish:
echs 1 2 3
^
Fish will output an Unknown command error for each argument inside a subshell if the actual command is not found.
This error made me waste some time today because I was running
fish -cfrom Ansible, and I thought there was a bug in my code that made each argument run in a subshell, while it was just the error output that was strange.It doesn't try to run each argument as a command, though:
Behaviour on Fish 2.7.1 (well, I guess
Unknown command 'echs'would be easier to understand):Requested information: