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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 OSF1

uudemon

uudemon(4)						     Kernel Interfaces Manual							uudemon(4)

NAME

       uudemon.admin,  uudemon.cleanu,	uudemon.hour,  uudemon.poll  -	Administrative shell scripts for polling remote systems, cleaning up spool
       directories, reporting status to the system administrator, and routine invocations of the uuxqt and uusched daemons

SYNOPSIS

       These shell scripts reside in the following directory:
	  /usr/lib/uucp

DESCRIPTION

       All the scripts can be run from the command line or can be run automatically by the cron daemon. To automatically run the  scripts,  remove
       the comment character (#) from the beginning of the relevant line in the /var/spool/cron/crontabs/uucp file.

       This  script  reports  status  to  the system administrator. It issues the uustat command to find out the status of uucp jobs. It mails the
       results to the uucp login ID. The script may be modified to send mail to any login ID such as the uucp administrative login ID  (uucpa)	or
       root.  This script cleans up the /var/spool/uucp and /var/spool/uucppublic directories by running the uucleanup command. The uucleanup com-
       mand is run with the following parameters: -C7, -D7, X2, -o2, -W1.  This script runs the uusched and uuxqt daemons in the background.  This
       script  polls  the  systems  listed  in	the  /usr/lib/uucp/Poll file.  The uudemon.poll script should be scheduled before the uudemon.hour
       script. This allows uudemon.poll to create any command files before cron runs the uudemon.hour script.

FILES

       Contains the uudemon.admin, uudemon.cleanu, uudemon.hour and uudemon.poll files.  Contains the uucp file.

RELATED INFORMATION

       Commands: cron(8), uucleanup(8), uusched(8), uuxqt(1)

       Files: /usr/lib/uucp delim off

																	uudemon(4)
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