04-26-2009
How to capture actual error message when a command fails to execute
I want to capture actual error message in case the commands I use in my shell script fails.
For eg:
ls -l abc.txt 2>>errorlog.txt
In this case I understand the error message is written to the errorlog.txt and I assume its bacause the return code from the command ls -l abc might return 2 if "abc" doesnt exists.
My question is: How about if the command return non zero return code and is not equal to 2?
I want to do something like this:
ls -l abc.txt
if [$? -ne 0]
then
echo $errorMessage >> errorlog.txt
fi
where I want actual error message that the command has returned to be written to errorlog.txt. Just for understanding I used $errorMessage but I assume there should be some means to capture the actual error message which can later be stored in errorMessage or written directly to errorlog.txt.
Can someone please help?
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