diff options
Diffstat (limited to 'utils/sush.sh')
| -rw-r--r-- | utils/sush.sh | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/utils/sush.sh b/utils/sush.sh new file mode 100644 index 00000000..4fccd75e --- /dev/null +++ b/utils/sush.sh @@ -0,0 +1,90 @@ +#!/bin/sh +# A unix-like su (one which invokes a sub-shell). +# +# Copyright (C) 1996 Free Software Foundation, Inc. +# +# Written by Miles Bader <miles@gnu.ai.mit.edu> +# +# This file is part of the GNU Hurd. +# +# The GNU Hurd is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License as +# published by the Free Software Foundation; either version 2, or (at +# your option) any later version. +# +# The GNU Hurd is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +# + +ARGS_DOC="[USER|- [COMMAND [ARG...]]]" +USAGE="Usage: $0 $ARGS_DOC" +DOC="Start a new shell, or COMMAND, as USER" + +LOGIN=${LOGIN-/bin/login} +FMT=${FMT-/bin/fmt} + +needs_arg="" +for I; do + case $needs_arg in + ?*) needs_arg="";; + "") + case "$I" in + -e|-E|-g|-G|-u|-U|--envar|--envva|--env|--en|--e|--envvar-default|--envvar-defaul|--envvar-defau|--envvar-defa|--envvar-def|--envvar-def|--envvar-de|--envvar-d|--envvar-|--group|--grou|--gro|--gr|--g|--avail-group|--avail-grou|--avail-gro|--avail-gr|--avail-g|--user|--use|--us|--u|--avail-user|--avail-use|--avail-us|--avail-u) + needs_arg="$I";; + -e*|-E*|-g*|-G*|-u*|-U*|--envar=*|--envva=*|--env=*|--en=*|--e=*|--envvar-default=*|--envvar-defaul=*|--envvar-defau=*|--envvar-defa=*|--envvar-def=*|--envvar-def=*|--envvar-de=*|--envvar-d=*|--envvar-=*|--group=*|--grou=*|--gro=*|--gr=*|--g=*|--avail-group=*|--avail-grou=*|--avail-gro=*|--avail-gr=*|--avail-g=*|--user=*|--use=*|--us=*|--u=*|--avail-user=*|--avail-use=*|--avail-us=*|--avail-u=*) + :;; + --avail-|--avail|--avai|--ava|--av|--a|--avail-=*|--avail=*|--avai=*|--ava=*|--av=*|--a=*) + echo 1>&2 "$0: option \`$1' is ambiguous" + echo 1>&2 "Try \`$0 --help' or \`$0 --usage' for more information"; + exit 1;; + --help|"-?" |--hel|--he|--h) + echo "$USAGE" + echo "$DOC" + echo "" + echo " -?, --help Give this help list" + echo " -e ENTRY, --envvar=ENTRY Add ENTRY to the environment" + echo " -E ENTRY, --envvar-default=ENTRY" + echo " Use ENTRY as a default environment variable" + echo " -g GROUP, --group=GROUP Add GROUP to the effective groups" + echo " -G GROUP, --avail-group=GROUP Add GROUP to the available groups" + echo " -u USER, --user=USER Add USER to the effective uids" + echo " -U USER, --avail-user=USER Add USER to the available uids" + echo " --usage Give a short usage message" + echo " -V, --version Print program version" + echo "" + echo "Unlike the traditional unix \`su' command, if USER is not specified," + echo "then the result is *no* user-ids, not uid 0." + exit 0;; + --usage |--usag|--usa|--us|--u) + (echo "Usage: $0 [-V?]" + echo " [-e ENTRY] [-E ENTRY] [-g GROUP] [-G GROUP] [-u USER] [-U USER] [--envvar=ENTRY] [--envvar-default=ENTRY] [--group=GROUP] [--avail-group=GROUP][--group=GROUP] [--avail-group=GROUP] [--user=USER] [--avail-user=USER] [--help] [--usage] [--version] $ARGS_DOC") |$FMT -t + exit 0;; + --version|-V |--versio|--versi|--vers|--ver|--ve|--v) + echo "STANDARD_HURD_VERSION_sush_"; exit 0;; + -) + : ;; + --) + break;; + -*) + echo 1>&2 "$0: unrecognized option \`$1'" + echo 1>&2 "Try \`$0 --help' or \`$0 --usage' for more information"; + exit 1;; + *) + break;; + esac;; + esac +done + +case "$needs_arg" in ?*) + echo 1>&2 "$0: option \`$1' requires an argument" + echo 1>&2 "Try \`$0 --help' or \`$0 --usage' for more information"; + exit 1;; +esac + +exec $LOGIN --program-name="$0" -pxSLf -aHOME -aMOTD -aUMASK -aBACKUP_SHELLS "$@" |