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Full Discussion: Shell Script has different ouput via cron vs when run Manually
Top Forums Shell Programming and Scripting Shell Script has different ouput via cron vs when run Manually Post 302975518 by Irishboy24 on Tuesday 14th of June 2016 05:05:38 PM
Old 06-14-2016
Shell Script has different ouput via cron vs when run Manually
Hello Lads,

I deployed a script on my mac to start and stop EC2 instances on AWS console. The script when started manually on the terminal does the expected stop and start. Problem is when i try to schedule it on a cron, it fails to recognize the AWS Keys which i set up as ENV variable by adding them to ~/ .bash_profile and throws an error of missing key.

Note that when i do printenv on terminal i can see the AWS ENV variables. I can also see them when i cat the ~/ .bash_profile file. Can any one advise on what's happening here. All other crons on my mac are working fine.

Code:
# Run Daily to Start and Stop EC2 Instances
48 15 * * 1-5 /home/Dir/Documents/Scripts/BashScripts/start-ec2.sh >> /home/Dir/Documents/Scripts/BashScripts/CronStart.txt 
45 15 * * 1-5 /home/Dir/Documents/Scripts/BashScripts/stop-ec2.sh >> /home/Dir/Documents/Scripts/BashScripts/CronStop.txt

Code:
#!/bin/bash
export PATH=$PATH:/home/Dir
export AWS_ACCESS_KEY_ID
export AWS_SECRET_ACCESS_KEY
export AWS_CREDENTIAL_FILE

/usr/local/bin/ec2-stop-instances i-xxxx --region us-west-2
/usr/local/bin/ec2-stop-instances i-xxxx --region us-west-2

Code:
Output When Starting Manually. 

./start-ec2.sh 
INSTANCE	i-xxxx	stopped	pending
INSTANCE	i-xxxx	stopped	pending

Code:
Full Error which i capture in /var/Mail/Maddy
Subject: Cron /Users/Maddy/Documents/Scripts/BashScripts/stop-ec2.sh >> /Users/Maddy/Documents/Scripts/BashScripts/CronStop.txt
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <PATH=/usr/bin:/bin>
X-Cron-Env: <LOGNAME=Maddy>
X-Cron-Env: <USER=Maddy>
X-Cron-Env: <HOME=/Users/Maddy>
Date: Tue, 14 Jun 2016 16:58:03 -0400 (EDT)

Required option '-O, --aws-access-key KEY' missing (-h for usage)
Required option '-O, --aws-access-key KEY' missing (-h for usage)

Code:
My Path Variable.
echo $PATH
/Library/Frameworks/Python.framework/Versions/3.4/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin

 

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LEARN ABOUT FREEBSD

service

SERVICE(8)						    BSD System Manager's Manual 						SERVICE(8)

NAME

     service -- control (start/stop/etc.) or list system services

SYNOPSIS

     service -e
     service -R
     service [-v] -l | -r
     service [-v] <rc.d script> start|stop|etc.

DESCRIPTION

     The service command is an easy interface to the rc.d system.  Its primary purpose is to start and stop services provided by the rc.d scripts.
     When used for this purpose it will set the same restricted environment that is in use at boot time (see below).  It can also be used to list
     the scripts using various criteria.

     The options are as follows:

     -e  List services that are enabled.  The list of scripts to check is compiled using rcorder(8) the same way that it is done in rc(8), then
	 that list of scripts is checked for an "rcvar" assignment.  If present the script is checked to see if it is enabled.

     -R  Restart all enabled local services.

     -l  List all files in /etc/rc.d and the local startup directories.  As described in rc.conf(5) this is usually /usr/local/etc/rc.d.  All
	 files will be listed whether they are an actual rc.d script or not.

     -r  Generate the rcorder(8) as in -e above, but list all of the files, not just what is enabled.

     -v  Be slightly more verbose

ENVIRONMENT

     When used to run rc.d scripts the service command sets HOME to / and PATH to /sbin:/bin:/usr/sbin:/usr/bin which is how they are set in
     /etc/rc at boot time.

EXIT STATUS

     The service utility exits 0 on success, and >0 if an error occurs.

EXAMPLES

     The following are examples of typical usage of the service command:

	   service named status
	   service -rv

     The following programmable completion entry can be use in bash(1) for the names of the rc.d scripts:
	   _service () {
		local cur
		cur=${COMP_WORDS[COMP_CWORD]}
		COMPREPLY=( $( compgen -W '$( service -l )' -- $cur ) )
		return 0
	   }
	   complete -F _service service

SEE ALSO

     bash(1) (ports/shells/bash), rc.conf(5), rc(8), rcorder(8)

HISTORY

     The service utility first appeared in FreeBSD 7.3.

AUTHORS

     This manual page was written by Douglas Barton <dougb@FreeBSD.org>.

BSD
								 December 11, 2012							       BSD
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