FreeBSD port: `stdout` of sub command got redirected to `stderr`

[abakay]

FreeBSD port: `stdout` of sub command got redirected to `stderr`

[slicer69]

Which shell are you using? On my FreeBSD machine with the default shell (tcsh) that line will give the error "ls 2: no such file or directory".

If I switch to bash and run "doas ls 2> /dev/null" then I get a directory listing as expected.

[abakay]

I tried that command in sh and fish shells.

It is looks like in tcsh is not possible to redirect stderr separately from stdout. From man tcsh:

Diagnostic output may be directed through a pipe with the standard output. Simply use the form |& rather than just |.

The shell cannot presently redirect diagnostic output without also redirecting standard output, but (command > output-file) >& error-file is often an acceptable workaround. Either output-file or error-file may be /dev/tty to send out-put to the terminal.

[slicer69]

I just checked with plain sh (/binsh) on FreeBSD 12.2 and running "doas ls 2> /dev/null" displays a normal directory listing.

[abakay]

Ok, I guess I spotted one more difference. I am using pam_ssh_agent_auth package on this machine with following PAM configuration:

auth            sufficient      /usr/local/lib/pam_ssh_agent_auth.so file=~/.ssh/authorized_keys
auth            required        pam_deny.so
account         include         system
session         required        pam_permit.so

Maybe that somehow is contributing to the issue.

[slicer69]

Perhaps. I can say that with the default configuration output isn't being redirected so the command you suggested prints output as expected.