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#!/usr/bin/perl
#
# Scrolls system information.
# A simple example of how to communicate with ticker from a perl program.
#
# By Joey Hess <joey@kitenet.net>, GPL copyright 1998.
$size=200; # max buffer size.
$SIG{'INT'} = 'quit';
$SIG{'QUIT'} = 'quit';
# Use shared memory to communicate with the ticker program.
$IPC_PRIVATE = 0;
$IPC_RMID = 0;
$key=shmget($IPC_PRIVATE, $size , 0777 ) || die $!;
shmwrite($key, `uptime`, 0 , $size ) || die $!;
# Fork the ticker program off.
if (!fork) {
exec "ticker","-s$key","-S$size","-c5",@ARGV;
kill 3,getppid();
die "Cannot execute ticker program, is it in the PATH?";
}
while (1) {
shmwrite($key, `uptime`, 0 , $size ) || die $!;
sleep 10;
}
sub quit {
# Mark the shared memory for deletion.
shmctl($key, $IPC_RMID, 0) || die $!;
exit;
}
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