//View Tip #196
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Don't have telnet or netcat handy for making a socket connection? Most Linux distros - not likely Debian - have this functionality built directly into Bash. The following will pull my site's index source on port 80, replace with any URL.

#!/bin/bash

exec 3<>/dev/tcp/kinqpinz.info/80
echo -e "GET / HTTP/1.1\nHost: kinqpinz.info;\nConnection: close\n\n">&3
cat <&3


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gawk does something similar with /inet/tcp see: http://www.gnu.org/software/ga … 2ftcp.html
Posted 2009-02-07 19:54:57
Les
From the bash man page:

NOTE: Bash, as packaged for Debian, does not support using the /dev/tcp and /dev/udp files.

This means that for popular distributions like Ubuntu GNU/Linux 8.04, you may have to compile a custom bash first.
Posted 2009-02-07 20:34:03

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