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: / bin /
Filename : byobu-launcher
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#!/bin/sh -e
#
#    byobu-launcher - conditionally launch byobu
#    Copyright (C) 2010 Canonical Ltd.
#
#    Authors: Dustin Kirkland <kirkland@byobu.org>
#
#    This program 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, version 3 of the License.
#
#    This program 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, see <http://www.gnu.org/licenses/>.

PKG="byobu"
# Bad things happen if you run byobu, but you don't own your $HOME
# ie, rather than "sudo byobu", you must run "sudo -H byobu"
if [ -O "$HOME" ]; then
	[ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc"
	[ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX
	. "${BYOBU_PREFIX}/lib/${PKG}/include/common"
	if [ -e "$BYOBU_CONFIG_DIR/disable-autolaunch" ]; then
		false
	else
		case "$TERM" in
			*screen*)
				# Handle nesting
				if [ -n "$SSH_CONNECTION" ] && [ "$(printf "$SSH_CONNECTION" | awk '{print $1}')" != "$(printf "$SSH_CONNECTION" | awk '{print $3}')" ]; then
					# Safeguard against ssh-ing into ourself, which causes an infinite loop
					exec $BYOBU_PREFIX/bin/byobu "$@"
				else
					echo "INFO: Disabling auto-launch of Byobu in this SSH connection, to avoid a potential infinite loop" 1>&2
					echo "INFO: You can still run 'byobu' manually at the command line, if you know what you're doing" 1>&2
					true
				fi
			;;
			dumb)
				# Dumb terminal, don't launch
				false
			;;
			*)
				exec $BYOBU_PREFIX/bin/byobu "$@"
			;;
		esac
	fi
fi
false

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