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Full Discussion: How to write an expect script to check if a process is running?
Top Forums Shell Programming and Scripting How to write an expect script to check if a process is running? Post 302365163 by icchi on Monday 26th of October 2009 07:45:06 AM
Old 10-26-2009
How to write an expect script to check if a process is running?
I'm new to expecting and i want to create a script to ssh to a device,check is a process is running and display that the process is running or not.This is what i have so far
After executing this script i get an error.



Code:
#!/usr/bin/expect
set timeout -1
set ip "machine ip goes here"
set passwd "password goes here"
set pro "pgrep processtocheck | wc -l"
spawn ssh -p 222 machine@$ip
set test_id $spawn_id
expect -i $test_id "Password:"
send -i $test_id  "$passwd\r"
expect "ipcs"
send -i $test_id "sudo su\r"
expect -i $test_id "#"
send -i $test_id "$pro\r"
expect -i $test_id "#"
if { $pro -ne 1 } {
echo "process stopped"
} else {
echo "process running"
}
exit

Any help will be grateful
Last edited by DukeNuke2; 10-26-2009 at 04:55 PM.. Reason: added code tags
 

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LEARN ABOUT REDHAT

pidof

PIDOF(8)						Linux System Administrator's Manual						  PIDOF(8)

NAME

       pidof -- find the process ID of a running program.

SYNOPSIS

       pidof [-s] [-x] [-o omitpid] [-o omitpid..]  program [program..]

DESCRIPTION

       Pidof  finds  the  process  id's (pids) of the named programs. It prints those id's on the standard output. This program is on some systems
       used in run-level change scripts, especially when the system has a System-V like rc structure. In that case these scripts  are  located	in
       /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8) program that should be used instead.

OPTIONS

       -s     Single shot - this instructs the program to only return one pid.

       -x     Scripts too - this causes the program to also return process id's of shells running the named scripts.

       -o     Tells  pidof  to omit processes with that process id. The special pid %PPID can be used to name the parent process of the pidof pro-
	      gram, in other words the calling shell or shell script.

NOTES

       pidof is simply a (symbolic) link to the killall5 program, which should also be located in /sbin.

       When pidof is invoked with a full pathname to the program it should find the pid of, it is reasonably safe. Otherwise it is  possible  that
       it returns pids of running programs that happen to have the same name as the program you're after but are actually other programs.

SEE ALSO

       shutdown(8), init(8), halt(8), reboot(8)

AUTHOR

       Miquel van Smoorenburg, miquels@cistron.nl

								    01 Sep 1998 							  PIDOF(8)
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