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.\" Original author unknown. This man page is in the public domain..\" Modified Sat Oct 9 17:46:48 1993 by email@example.com.TH NEWGRP 1 "October 1993" "util-linux" "User Commands".SH NAMEnewgrp \- log in to a new group.SH SYNOPSIS.B newgrp.RI [ group ].SH DESCRIPTION.B newgrpchanges the group identification of its caller, analogously to.BR login (1).The same person remains logged in, and the current directoryis unchanged, but calculations of access permissions to files are performedwith respect to the new group ID..LPIf no group is specified, the GID is changed to the login GID..LP.SH FILES.I /etc/group.br.I /etc/passwd.SH "SEE ALSO".BR login (1),.BR group (5).SH AUTHOROriginally by Michael Haardt. Currently maintained byPeter Orbaek (firstname.lastname@example.org)..SH AVAILABILITYThe newgrp command is part of the util-linux package and is available fromftp://ftp.kernel.org/pub/linux/utils/util-linux/.