Linux Training

#!/bin/bash
# $Id: rhost,v 1.62 2023/08/23 21:49:45 fulford Exp fulford $
# $Source: /src/admin/usr/local/etc/RCS/rhost,v $
# $Release$
# Author C W Fulford.
# Copyright 2013 (c) C W Fulford. All rights reserved.
# For assistance contact fulford@fulford.net 0709 229 5385
###################################################################
cmd=`basename $0`
syntax="$cmd [-c <config file>] [-d] [-fs #] [-l <login name>] [-t <TERM>] [-u <username>] [-v] [-X] [-Y] <hostname>\nor\n
 <hostname> [-c <config_file>] [-d] [-fs #] [-l <login_name>] [-t <TERM>] [-u <username>] [-v] [-X] [-Y] <hostname>"
while [ $# -gt 0 ];do
	case $1 in
		-c) config=$2;shift 2;;
		-d) set -x;sshv="-v";debug=:;shift;;
		-fs) fsize=$2;shift;;
		-l) login=$2;shift 2;;
		-t) vterm=$2;shift 2;;
		-v) set -x;sshv="-v";shift;;
		-X | -Y ) xforward=$1;shift;;
		-*) echo -e $syntax >&2; exit;;
		 *) host=$1;shift;;
	esac
done
config=${config:-/usr/local/etc/rhost.cf}
bg=${bg:-yellow}
fg=${fg:-blue}
port=22
vterm=${vterm:-xterm}
DISPLAY=${DISPLAY:-localhost:0.0}
if ps -ef|grep -q xfwm4 ;then
	vterm=xfce4-terminal
fi
if [ -z $host ];then
	host=`basename $0`
fi	
if [ $host = "host" ];then
	echo "$0: host not set connecting to localhost" >&2
	host=localhost
fi
if [ -f "$config" ] ;then
	if grep "^$host:"  $config >/dev/null 2>&1 ;then 
		eval `sed -ne "/^$host:/,/^$/{
			/^[ 	][^#]/p
		}" $config`
	else
		echo "$cmd: $host not found in $config" >&2
	fi
else
	echo "$cmd: $config not found" >&2
fi
para="-fn 10x20 -sb -sm -sl 4000"
[ $xforward ] && spara="$spara -l $login" 
[ $verbose ] && echo $spara >&2

ping -c 1 -W 1 $host >/dev/null ||{
	case $conn in
		vpn) vn-connect ${debug:+"-d"} $host;teardown="killall pppd";;
		telnet) $vterm -display $DISPLAY -bg $bg -fg $fg -T $host -geometry 80x24 -e "telnet $host $port";;
		pppd) sudo pppd call $domain;; 
	esac
}

case $vterm  in 
	   local) $vterm --display $DISPLAY  -t $host --geometry=80x24 -e "ssh $sshv $spara -p $port $login $host";;
	   lxterminal) $vterm --display $DISPLAY  -t $host --geometry=80x24 -e "ssh $sshv $spara -p $port $login $host";;
	   xterm) $vterm -display $DISPLAY -bg $bg $para -fg $fg  -T $host -geometry 80x24  -e "export TERM=xterm;ssh $sshv $spara -p $port $host; [ -n "$wdir"] && cd $wdir" ;;
	terminal) $vterm --title=$host -e "ssh $sshv $login -p $port $host";;
	   rdesktop) $vterm -g $geometry -d $domain -u $user -p "$passwd" $host;exit;;
	xfce4-terminal) $vterm --display $DISPLAY --color-bg=$bg --color-text=$fg -T $host -e "ssh $sshv $spara -p $port $host";; 
esac
[ $teardown ] && $teardown
######################################################################
# This program is free software: you can redistribute it and or      #
# modify it under the terms of the Lesser GNU General Public License #
# as published by the Free Software Foundation, either version 3 of  #
# the License, or (at your option) any later version.                #
#                                                                    #
# 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.                       #
#                                                                    # 
# A copy of the Lesser GNU General Public License and the GNU        #
# General Public License is available at                             #
# <http://www.gnu.org/licenses/>.                                    #
######################################################################