/usr/bin/byobu-launcher-uninstall is in byobu 5.87-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47  | #!/bin/sh -e
#
#    byobu-launcher-uninstall
#    Copyright (C) 2008 Canonical Ltd.
#
#    Authors: Nick Barcet <nick.barcet@ubuntu.com>
#             Dustin Kirkland <kirkland@byobu.co>
#
#    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"
[ -r "$HOME/.byoburc" ] && . "$HOME/.byoburc"
[ -z "${BYOBU_PREFIX}" ] && export BYOBU_PREFIX="/usr" || export BYOBU_PREFIX
. "${BYOBU_PREFIX}/lib/${PKG}/include/common"
remove_launcher() {
	dest=$1
	if [ -w "$dest" ]; then
		# keep any comments, and remove lines invoking byobu:
		$BYOBU_SED -i -e '/^\s*#/n' -e "/\b$PKG-launch/d" -e "/\bscreen-launch/d" "$dest"
	fi
}
if [ -f "$1" ]; then
		remove_launcher "$1"
else
	for i in ".profile" ".bashrc" ".bash_profile" ".bash_login" ".zprofile" ".config/fish/config.fish"; do
		remove_launcher "$HOME/$i"
	done
fi
mkdir -p "$BYOBU_CONFIG_DIR"
touch "$BYOBU_CONFIG_DIR/disable-autolaunch"
# install disabled motd printing; re-enable
rm -f "$HOME"/.hushlogin
# vi: syntax=sh ts=4 noexpandtab
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