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Top Forums Shell Programming and Scripting How to check if a Port is accepting connections. Post 302341844 by BzGuy on Thursday 6th of August 2009 05:27:50 PM
Old 08-06-2009
telnet / port check in a script

#!/bin/ksh
LIST="apple:22
oracle:23
kiwi:9999
pear:21"
FILE="/tmp/telnet_port_status"
cat /dev/null >${FILE}
for HST in ${LIST};do
HOST=$(echo ${HST}|awk -F: '{print $1}')
PORT=$(echo ${HST}|awk -F: '{print $2}')
(telnet ${HOST} ${PORT} >/dev/null 2>&1) &
sleep 5
if [ $(ps -ef | grep -ce"telnet ${HOST} ${PORT}") -gt 1 ]; then
echo "telnet ${HOST} ${PORT} was good, ${PORT} was listening" >>${FILE}
else
echo "telnet ${HOST} ${PORT} was BAD, ${PORT} NOT listening" >>${FILE}
fi
ps -ef | grep -e"telnet ${HOST} ${PORT}"|grep -v grep|awk '{print "kill -9 "$2}' |/bin/sh >/dev/null 2>&1
done
cat ${FILE}

exit 0

Last edited by BzGuy; 08-07-2009 at 12:18 PM..
 

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HTS(1)							      General Commands Manual							    HTS(1)

NAME
hts - httptunnel server SYNOPSIS
hts [options] [host:][port] DESCRIPTION
This manual page briefly documents the hts command. hts listens for incoming httptunnel connections at PORT (default port is 8888), and optionally binds to ip address HOST. When a connection is made, I/O is redirected to the destination specified by the --device or --forward-port switch. OPTIONS
The program follows the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options are included below. -h, --help Show summary of options. -c, --content-length BYTES use HTTP PUT requests of BYTES size (k, M, and G postfixes recognized) -d, --device DEVICE use DEVICE for input and output -F, --forward-port HOST:PORT connect to PORT at HOST and use it for input and output -k, --keep-alive SECONDS send keepalive bytes every SECONDS seconds (default is 5) -M, --max-connection-age SEC maximum time a connection will stay open is SEC seconds (default is 300) -s, --stdin-stdout use stdin/stdout for communication (implies --no-daemon) -S, --strict-content-length always write Content-Length bytes in requests -V, --version output version information and exit -w, --no-daemon don't fork into the background -p, --pid-file LOCATION write a PID file to LOCATION AUTHOR
This manual page was contributed by Teemu Hukkanen <tjhukkan@iki.fi>, and was originally written for the Debian GNU/Linux system. HTS(1)
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