bash script for telnet remotehost port

pudhiyavan · 06-18-2009, 03:52 AM

Hi

telnet 122.18x.xxx.23 80 is giving me

Trying 122.18x.xxx.23...
Connected to 122.18x.xxx.23
Escape character is '^]'.

sometimes it gives me connection refused,, i wanted to monitor the same and if there is connection refused or timedout it should update the same in a txt file with timestamp, can anyone help me out please.

Trumpen · 06-18-2009, 05:02 AM

In these cases I'd rather use netcat:

Code:

if ! netcat -z "$ip" 80; then
      date "+%Y/%m/%d %H:%M:%S $ip " >>/full/path/dead_servers.txt
fi

theNbomr · 06-18-2009, 08:27 AM

Quote:

Originally Posted by Trumpen

In these cases I'd rather use netcat:

Code:

if ! netcat -z "$ip" 80; then
      date "+%Y/%m/%d %H:%M:%S $ip " >>/full/path/dead_servers.txt
fi

And on systems I use, the netcat binary is actually 'nc', so:

Code:

if ! nc -z "$ip" 80; then
      date "+%Y/%m/%d %H:%M:%S $ip " >>/full/path/dead_servers.txt
fi

C-kermit can probably be scripted to do this kind of procedure as well.
--- rod.