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Top Forums UNIX for Advanced & Expert Users Help with loading config files
# 1  
Old 04-17-2011
Data Help with loading config files
Hi All,

I'm bit confused with a script
Any help would be appreciated

I have a config file say config.cfg and iam loading config file in My_Script.sh..The script name is My_Script.sh.
My_Script.sh and config.cfg are in same directory...My_Script.sh is run on the crontab
Code:
50 01 * * * [ -f /home/k7/My_Script.sh ] && cd /data2/log/bin/oapi; ./My_Script.sh -t weekly > /dev/null 2>&1

The contents of config.cfg is
Code:
OUTPUT_FILE=/home/k7/final_output.csv

and the contents of My_Script is
Code:
#!/bin/sh
....
....
USAGE="USAGE: $0 -t weekly|monthly\n"
....
....
....
$CONFIG_FILE=./config.cfg

. $CONFIG_FILE #Loading config file

if [ $? -ne 0 ]
then
    echo "Error while loading $CONFIG_FILE config file"
    exit 1
fi

...
...
...

set -- `getopt t: $*`
if [ $? -ne 0 ]
then
    echo $USAGE
    exit 1
fi

1)In this code
Code:
if [ $? -ne 0 ]
then
    echo "Error while loading $CONFIG_FILE config file"
    exit 1
fi

what does if [ $? -ne 0 ] condition signify.I mean what is "$?" implies...


2)what the below two code implies
1st code
Code:
set -- `getopt t: $*`
if [ $? -ne 0 ]
then
    echo $USAGE
    exit 1
fi

2nd code
Code:
50 01 * * * [ -f /home/k7/My_Script.sh ] && cd /data2/log/bin/oapi; ./My_Script.sh -t weekly > /dev/null 2>&1

Thanks in advance
Last edited by Scott; 04-17-2011 at 02:51 PM.. Reason: Code tags, please...
# 2  
Old 04-17-2011
1-) $? , tells us that last command exit status code..usually success commands returns 0 , if fails return codes nonzero value.

2-) set -- `getopt t: $*` , makes the positional parameters set to the " -t plus $* plus --" ,
so if you run this like -- > ./My_Script.sh -t weekly --> positonol paramertes equals to " -t weekly -- "
if you run this like -> --> ./My_Script.sh -t weekly monthly --> positonol paramertes equals to " -t weekly -- monthly "

but in this case as if , set -- `getopt t: $*` always returns zero.Smilie

3-) 50 01 * * * [ -f /home/k7/My_Script.sh ] && cd /data2/log/bin/oapi; ./My_Script.sh -t weekly > /dev/null 2>&1
this script will run every day every at 01:50.
if "/home/k7/My_Script.sh" file is exist and regular file then run these commands
" cd /data2/log/bin/oapi; ./My_Script.sh -t weekly "
if "/home/k7/My_Script.sh" file is not exist or is not regular file then runs this command
./My_Script.sh -t weekly

if you write full script , we can maybe more help..Smilie


regards
ygemici
# 3  
Old 04-17-2011
Since you didn't take the hint last time:

PMING PEOPLE WITH TECH SUPPORT QUESTIONS IS COMPLETELY AGAINST THE RULES.

IT IS ALSO RUDE.

IT DOESN'T GET ME HERE ANY FASTER. NOBODY HERE IS "ON CALL".

STOP DOING IT!
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