.TH NEWGRP 1
.SH NAME
newgrp \- log in to a new group
.SH SYNTAX
.B newgrp
group
.SH DESCRIPTION
.I Newgrp
changes the group identification of its caller,
analogously to \fIlogin\fP\|(1).
The same person remains logged in,
and the current directory is unchanged,
but calculations of access permissions to files are
performed with respect to the
new group ID.
.PP
If the `SHELL' environment variable is set, \fInewgrp\fP will use it
as the name of the new shell. The login environment is also initialized
for foreign shells. In this way multiple shells can be used on the
system interchangably.
.PP
A password is demanded if the group has
a password.
.PP
.I Newgrp
is known to the shell, which executes it directly without a fork.
.SH FILES
/etc/group, /etc/passwd
.SH "SEE ALSO"
login(1), group(5)
.SH "BUGS"
Since newgrp starts a new shell, shell context and variables not
in the environment are lost.