<b_jonas> perl -e for $e ("i","u"){ $f="bin/date$e"; open my$i,"<",$f or die "error open $f r"; local$/; $s=<$i> or die; $s=~s/"\\+%Y/\\${d:+-d "\\$d"} $&/ or die; open $o,">",$f or die "error open $f w: $!"; print $o $s or die; close $o or die; print "OK $f\\n" }

Please see http://www.esolangs.org/wiki/Glass

To make the IRC bot, use:
make clean all CXXFLAGS="-O2 -g -DIRC"

To run it, modify glassIRC.sh to fit your needs then:
nc -e ./glassIRC.sh irc.freenode.net 6667