This file is indexed.

/usr/bin/rscreen is in autossh 1.4d-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh
#
# Script to use autossh to open up a remote screen session, or
# reconnect to an existing one. Based on autossh's original rscreen
# example script as installed on Debian systems into
# /usr/share/doc/autossh/rscreen, but with more generally usable
# defaults
#
# Copyright (C) Carson Harding, 2002.
# Copyright (C) Axel Beckert, 2011.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are freely permitted.
#
# THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
# THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

BASENAME=`basename $0`
usage() {
	echo <<EOF
Usage: $BASENAME [autossh or ssh options] <host>

If \$RSCREEN_COMMAND is set (either in the environment, in
/etc/${BASENAME}rc, or in ~/.${BASENAME}rc), it will be used instead of screen
or tmux.  Use this feature if you want to supply additional screen
options or tmux commands. (Using \$RTMUX_COMMAND does not work!)

EOF
}

if [ -z "$1" ]; then
	usage
	exit 1
elif [ "$1" = "-h" -o "$1" = "--help" ]; then
	usage
	exit 0
fi

if [ -r /etc/${BASENAME}rc ]; then
    . /etc/${BASENAME}rc
fi

if [ -r ~/.${BASENAME}rc ]; then
    . ~/.${BASENAME}rc
fi

if [ -z "$SSH_AUTH_SOCK" ]; then
    eval `ssh-agent -s`
    ssh-add
fi

if [ -n "$RSCREEN_COMMAND" ]; then
    exec autossh -t "$@" "$RSCREEN_COMMAND"
elif [ "$BASENAME" = "rtmux" ]; then
    exec autossh -t "$@" "tmux a || tmux new"
elif [ "$BASENAME" = "ruscreen" ]; then
    # screen with explicit UTF-8 setting
    exec autossh -t "$@" "screen -RdU"
else
    # Fall back to normal screen
    exec autossh -t "$@" "screen -Rd"
fi