50 lines
1005 B
Groff
50 lines
1005 B
Groff
.Dd November 16, 2022
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.Dt PROPER-SH 5
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.Os
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.Sh NAME
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.Nm proper-sh
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.Nd name of a better non-interactive shell
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.Sh SYNOPSIS
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.Nm /etc/proper-sh
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.Sh DESCRIPTION
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The
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.Xr sh 1
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program is a thin wrapper that invokes
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.Xr sortix-sh 1
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on interactive use, but this shell is primitive and cannot execute most scripts,
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so non-interactive uses of
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.Xr sh 1
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instead searches for the name of a better shell to execute in this order:
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.Pp
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.Bl -bullet -compact
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.It
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The shell named in the
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.Ev SORTIX_SH_BACKEND
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environment variable.
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.It
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The shell named in the
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.Pa /etc/proper-sh
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file.
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.It
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.Xr dash 1 ,
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if installed.
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.It
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.Sy sortix-sh ,
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if no better shell was found.
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.El
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.Sh ENVIRONMENT
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.Bl -tag -width "SORTIX_SH_BACKEND"
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.It Ev SORTIX_SH_BACKEND
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The name of a better non-interactive shell, taking precedence if set over the
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.Pa /etc/proper-sh
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file.
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.El
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.Sh FILES
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.Bl -tag -width "/etc/proper-sh" -compact
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.It Pa /etc/proper-sh
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File containing the name of a better non-interactive shell.
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.El
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.Sh SEE ALSO
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.Xr dash 1 ,
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.Xr sh 1
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