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Top Forums Shell Programming and Scripting Expect command when triggered by launchd Post 302732615 by rowie718 on Sunday 18th of November 2012 05:45:53 PM
Old 11-18-2012
Expect command when triggered by launchd

Hi folks,

Im having trouble with an expect command in a shell script I use to back up mac os x servers. This one is being run on a 10.8.2 Server as part of a larger bash script. The script executes perfectly all the way through when triggered on the command line, but when launchd triggers it at the scheduled time, the rest of the script executes fine, but the expect command doesnt send the password and so the slapconfig command doesn't complete, it just hangs there waiting.

Here is the relevant portion of my script:

Code:
/usr/bin/expect -c '
spawn /usr/sbin/slapconfig -backupdb "'"${recover}/_OD_Backup_${date}"'"
sleep 10
expect "'"Enter archive password:"'"
send "'"${passwd}\\r"'"
interact
' >/Users/admin/Desktop/slapconfig.log

Ive redirected stdout to a text file to see where it stops and this is what it outputs:

"spawn /usr/sbin/slapconfig -backupdb /Volumes/RAID/Administration/Backups/server.domain.com/20121116/_OD_Backup_20121116
2012-11-17 00:06:42 +0000 slapconfig -backupdb
Enter archive password:
"

Perhaps this is a problem with launchd running the script commands in a subshell or something along those line? I'm a bit stumped why the expect command completes when the script is triggered on the command line but not when scheduled with launchd.

Any help would be greatly appreciated!

Last edited by rowie718; 11-18-2012 at 06:53 PM..
 

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INITSCRIPT(5)						Linux System Administrator's Manual					     INITSCRIPT(5)

NAME
initscript - script that executes inittab commands. SYNOPSIS
/bin/sh /etc/initscript id runlevels action process DESCRIPTION
When the shell script /etc/initscript is present, init will use it to execute the commands from inittab. This script can be used to set things like ulimit and umask default values for every process. EXAMPLES
This is a sample initscript, which might be installed on your system as /etc/initscript.sample. # # initscript Executed by init(8) for every program it # wants to spawn like this: # # /bin/sh /etc/initscript <id> <level> <action> <process> # # Set umask to safe level, and enable core dumps. umask 022 ulimit -c 2097151 PATH=/bin:/sbin:/usr/bin:/usr/sbin export PATH # Increase the hard file descriptor limit for all processes # to 8192. The soft limit is still 1024, but any unprivileged # process can increase its soft limit up to the hard limit # with "ulimit -Sn xxx" (needs a 2.2.13 or later Linux kernel). ulimit -Hn 8192 # Execute the program. eval exec "$4" NOTES
This script is not meant as startup script for daemons or somesuch. It has nothing to do with a rc.local style script. It's just a handler for things executed from /etc/inittab. Experimenting with this can make your system un(re)bootable. FILES
/etc/inittab, /etc/initscript. AUTHOR
Miquel van Smoorenburg ,<miquels@cistron.nl> SEE ALSO
init(8), inittab(5). July 10, 2003 INITSCRIPT(5)
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