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Include logfile in scripts

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# 1  
Old 09-23-2013
Include logfile in scripts
I am also pretty new to this scripting as well. I have found some bash script files from a legacy software. I need to find out the meaning. Could anyone help me regarding the following line:

Code:
LOGFILE=/export/home/test/log/test1.log

where and how this log file is being saved and why this line is required to write scripts in UNIX environment?

Very eagerly waiting. Thanking in advance.
Last edited by Scott; 09-23-2013 at 03:32 PM.. Reason: Code tags
# 2  
Old 09-23-2013
It sets a variable named LOGFILE to the string "/export/home/test/log/test1.log".

That is all.

How the logfile is created and written to, is up to the entire rest of the script you didn't post. Smilie We need more!
This User Gave Thanks to Corona688 For This Post:
sMark31
# 3  
Old 09-23-2013
Thank you Corona688.

What the following lines mean:
Code:
RETURNCODE=$?
echo "Success: $RETURNCODE" >>$LOGFILE
echo "Update complete `date`" >>$LOGFILE
exit $RETURNCODE

Last edited by Franklin52; 09-24-2013 at 03:12 AM.. Reason: Please use code tags
# 4  
Old 09-23-2013
Code:
# Get the return code of the last program that ran
# 0=success, anything else = error.
RETURNCODE=$?
# Print the return code and append it to $LOGFILE.
echo "Success: $RETURNCODE" >>$LOGFILE
# Print message and date, and append to $LOGFILE.
echo "Update complete `date`" >>$LOGFILE
# Return the same returncode we got above.
exit $RETURNCODE

This User Gave Thanks to Corona688 For This Post:
sMark31
# 5  
Old 09-23-2013
Quote:
Originally Posted by Corona688
Code:
# Get the return code of the last program that ran
# 0=success, anything else = error.
RETURNCODE=$?
# Print the return code and append it to $LOGFILE.
echo "Success: $RETURNCODE" >>$LOGFILE
# Print message and date, and append to $LOGFILE.
echo "Update complete `date`" >>$LOGFILE
# Return the same returncode we got above.
exit $RETURNCODE



Thank you Corona688.
So, the only way to identify whether there is any error is to check the RETURNCODE. If it is '0' then success, otherwise Error, isn't it?
# 6  
Old 09-23-2013
It will be a number from zero to 255 inclusive. Usually it's limited to zero or one, but programs may return specific numbers for specific errors too. What error they mean is up to the program.
This User Gave Thanks to Corona688 For This Post:
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