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Shell Programming and Scripting

Need a script

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# 1  
Old 07-13-2010
Question Need a script
Hi All,

I'm new to Shell scripting.

I need a script, that reads the last line of a file(name is passed as a command line argument) and checks if last line has 'END OF FILE' in it or not.

If it does not have 'END OF FILE' in it, then it should exit.

Could anyone help me with the script.

Thanks.
# 2  
Old 07-13-2010
Please familiarise yourself once again with the Forum Rules and Guidelines, regarding the subject title and how you should post questions.

What have you tried up to now?
# 3  
Old 07-14-2010
Quote:
Originally Posted by notaperlguru
Hi All,

I'm new to Shell scripting.

I need a script, that reads the last line of a file(name is passed as a command line argument) and checks if last line has 'END OF FILE' in it or not.

If it does not have 'END OF FILE' in it, then it should exit.

Could anyone help me with the script.

Thanks.
I'll give some hints.

use tail, $1 and grep.

That's all you should need. Let us know what you've tried so far.
# 4  
Old 07-14-2010
You can use While loop too.

Code:
while read line
do
    echo $line
    
done < "filename_here"

# 5  
Old 07-14-2010
tail -1 filename | grep 'END OF FILE'

If the the string is found in the last line then the last line will be displayed else no result is displayed.
# 6  
Old 07-14-2010
Code:
amit="END OF FILE"

ARS=`tail -1 $filename`

if [ "$ARS" == "$amit" ]
then
echo "file is ok"
else

echo "file NOT ok"
fi

# 7  
Old 07-14-2010
Try this:

Code:
tail -1 $1 | grep -q 'END OF FILE' || exit 131

Last edited by Scott; 07-14-2010 at 08:55 AM.. Reason: Code tags
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