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Shell Programming and Scripting
Running a shell script in cron...email not sending - help??
Post 302217577 by tjhorwood on Wednesday 23rd of July 2008 04:52:34 AM
07-23-2008
Running a shell script in cron...email not sending - help??
I am pretty new to Unix shell scripting, but wondered if anyone could help (in layman's terms if possible!!) 
I have a shell script which ultimately sends an alert to an email address if part of a batch of programs fails. Here's the script that sends the email:
Script: 6check.csh
#!/bin/csh
set alertperson = `cat /export/home/bdodym/alert.person`
if (-f critabend.tag ) then
cat callout6.msg | rmail $alertperson
rm critabend.tag
endif
This is where $alertperson will be forename.surname@address.com designation in the alert.person script
From the command line, all runs fine.
However, if I run through cron, it still seems to be executing the scripts (e.g files are created that I'm asking the script to do generally), but the email is not being sent as I would hope. In the below crontab, 6start.sh has a number of scripts to run through, the last of which is 6check2.csh (as per above)
crontab -l
#!/bin/csh
#############################################
# Minute Hour Month Day Month Weekday Command
# ___________________________________________________________
# 0 01 * * * Job_1
#
51 * * * * /export/home/bdodym/6start.sh
Does anyone know if there is anything additional I need to do add to either the script, or cron, to ensure the email sends? I think (from my VERY limited knowledge of this kind of thing!) that its something to do with the fact cron is running in the background rather than the terminal, as per the command line success. But, this is the final piece of the jigsaw and I just need to ensure I can get it to fit!!
I have a shell script which ultimately sends an alert to an email address if part of a batch of programs fails. Here's the script that sends the email:
Script: 6check.csh
#!/bin/csh
set alertperson = `cat /export/home/bdodym/alert.person`
if (-f critabend.tag ) then
cat callout6.msg | rmail $alertperson
rm critabend.tag
endif
This is where $alertperson will be forename.surname@address.com designation in the alert.person script
From the command line, all runs fine.
However, if I run through cron, it still seems to be executing the scripts (e.g files are created that I'm asking the script to do generally), but the email is not being sent as I would hope. In the below crontab, 6start.sh has a number of scripts to run through, the last of which is 6check2.csh (as per above)
crontab -l
#!/bin/csh
#############################################
# Minute Hour Month Day Month Weekday Command
# ___________________________________________________________
# 0 01 * * * Job_1
#
51 * * * * /export/home/bdodym/6start.sh
Does anyone know if there is anything additional I need to do add to either the script, or cron, to ensure the email sends? I think (from my VERY limited knowledge of this kind of thing!) that its something to do with the fact cron is running in the background rather than the terminal, as per the command line success. But, this is the final piece of the jigsaw and I just need to ensure I can get it to fit!!
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LEARN ABOUT DEBIAN
script-email
SCRIPT-EMAIL(8) System Administration Commands SCRIPT-EMAIL(8) NAME
script-email - Amanda script to send email notifications DESCRIPTION
script-email is an Amanda script implementing the Script API. It should not be run by users directly. It sends a notification email to the addresses specified in the MAILTO property. PROPERTIES
This section lists the properties that control script-email's functionality. See amanda-scripts(7) for information on the Script API, script configuration. MAILTO List of email addresses that will receive an email on command execution. It is a multi-valued property: property "MAILTO" "amanda@domain.com" "sysadmin@domain.com" "amandauser@domain.com" EXAMPLE
In this example, script-email is scheduled to be run before the DLE, on the server. The unqualified email address amanda will be passed to the email system unchanged. The script is then attached to a dumptype, which can then be specified for any DLEs which require notification. define script-tool pre-email { comment "email me before this DLE is backed up" plugin "script-email" execute-on pre-dle-backup execute-where server property "mailto" "amanda" } define dumptype user-tar-email { user-tar script "pre-email" } SEE ALSO
amanda(8), amanda.conf(5), amanda-client.conf(5), amanda-scripts(7) The Amanda Wiki: : http://wiki.zmanda.com/ AUTHORS
Jean-Louis Martineau <martineau@zmanda.com> Zmanda, Inc. (http://www.zmanda.com) Dustin J. Mitchell <dustin@zmanda.com> Zmanda, Inc. (http://www.zmanda.com) Amanda 3.3.1 02/21/2012 SCRIPT-EMAIL(8)