2014-04-13 12:23:04 -04:00
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.TH SU 1 ubase-VERSION
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.SH NAME
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\fBsu\fR - Run a command with a substitute user and group ID
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.SH SYNOPSIS
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\fBsu\fR [\fB-lp\fR] [\fIusername\fR]
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.SH DESCRIPTION
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\fBsu\fR allows to run commands with a substitute user and group ID.
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When called without arguments, su defaults to running an interactive shell
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as root. For backward compatibility su defaults to not change the current
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directory and to only set the environment variables \fBHOME\fR and \fBSHELL\fR
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(plus \fBUSER\fR and \fBLOGNAME\fR if the target \fIusername\fR is not root).
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.SH OPTIONS
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.TP
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\fB-l\fR
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Starts the shell as login shell with an environment similar to a real
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login.
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.TP
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\fB-p\fR
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Preserves the whole environment. This option is ignored if the \fB-l\fR
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option is specified.
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