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I have installing Midnight commander from FreeBSD 12.0-current with:

pkg install mc

When calling mc as as root, it runs as supposed; however when running as a normal user, it aborts with the error:

common.c: unimplemented subshell type 1
read (subshell_pty...): No error: 0 (0)

What to do?

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2 Answers 2

Reset to default
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According to this thread, there is a bug/problem with mc, depending also on how it is compiled.

The option is to recompile it with SUBSHELL off; or to run it as:

mc -u

So, the easiest option is to create an alias to mc as mc -u. As in:

alias mc='mc -u'

From man mc:

-u, --nosubshell Disable use of the concurrent shell (only makes sense if Midnight Commander has been built with concurrent shell support).

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-1

This error appears also, if you change default root shell to /bin/sh. There is information in package that subshell works almost everywhere excluding /bin/sh. Change default shell to /bin/csh and should be ok:

pw user mod root -s /bin/csh
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    Mar 3, 2022 at 5:39

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