Hashpipe lets you connect stdin and stdout to IRC with Unix pipes. For example,
sleep 5; echo "done" | hashpipe --server irc.freenode.net
messages the #hashpipe channel on the Freenode network when a long-running command finishes.
By default, stdin is echoed to all channels hashpipe joins, and NOTICEs and PRIVMSGs are printed to stdout. You can even use it as a (poor) IRC client:
$ hashpipe -s irc.freenode.net
lm->#hashpipe: hello there hashpipe
hello to you, lm
lm->hashpipe: I can even /msg you
neat!
(I can't msg you back, though)
Hashpipe is also handy for snooping on IRC channels:
if hashpipe --server my.irc.server --channels "#commandcentre" | grep -m 1 "oh geez, it's the law"; then
shred ~/Documents/secret/**/*
fi
You can even do semi-interactive things with hashpipe:
echo "Say 'stop' in the next 60 seconds to cancel a reboot" | timeout 60 hashpipe -s my.irc.server | grep -m 1 "stop"
ret=$?
if [[ $ret -eq 1 ]]; then
reboot;
fi
Of course, the best application is sending channel spam^W^Wimportant messages to channels:
$ echo "srs bznz" | figlet -f slant | hashpipe -s irc.for.professionals -c "#important"
<hashpipe> __
<hashpipe> _______________ / /_ ____ ____ ____
<hashpipe> / ___/ ___/ ___/ / __ \/_ / / __ \/_ /
<hashpipe> (__ ) / (__ ) / /_/ / / /_/ / / / / /_
<hashpipe> /____/_/ /____/ /_.___/ /___/_/ /_/ /___/
Hashpipe can also parse stdin as raw IRC commands and/or output everything the server sends. This is primarily useful for sending direct PRIVMSGs or automating various oper tasks.
It understands how to parse the commands listed here. If a command fails to parse, it will warn you, but continue processing stdin.
For instance,
$ hashpipe --server my.irc.server -io
:my.irc.server 1 hashpipe :Welcome to My IRC Server hashpipe!hashpipe@213.456.8.92
<snip>
:hashpipe!hashpipe@213.456.8.92 MODE hashpipe +x
JOIN #hashpipe
:hashpipe!hashpipe@213.456.8.92 JOIN #hashpipe
:my.irc.server 353 hashpipe @ #hashpipe :hashpipe @`lm`
:my.irc.server 366 hashpipe #hashpipe :End of /NAMES list.
PRIVMSG #hashpipe :hello
PRIVMSG lm :hi there
NICK bob
:hashpipe!hashpipe@213.456.8.92 NICK :bob
USAGE:
hashpipe [FLAGS] [OPTIONS] --server <server>
FLAGS:
-h, --help Prints help information
-d, --no-ssl Disable SSL encryption
-q Only print errors (overrides -v; overridden by raw output)
-i, --raw-in Interpret STDIN as raw IRC commands
-o, --raw-out Echo everything from the IRC server directly
-v Verbosity (1 for info, 2 for debug)
-V, --version Prints version information
OPTIONS:
-c, --channels <channels> Channel(s) to speak in (defalt: #hashpipe, or nothing if using raw input)
-n, --nick <nick> Nickname to use (default: hashpipe)
-p, --port <port> Port to use (default: 6667, or 6697 with SSL)
-s, --server <server> IRC server to connect to