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Shell Programming and Scripting
I/O Redirection: how can I redirect error msgs to a temp file
Post 302485611 by Abdulelah on Wednesday 5th of January 2011 04:34:02 PM
01-05-2011
I/O Redirection: how can I redirect error msgs to a temp file
Hi there,
I just want to know how can I redirect error msgs returned from running a command (e.g. nslookup) and then only print out the correct output using an if statement?.
I've tried the following:
where $a is a list of IPs.
but I got all the error msgs printed out to screen and the corret values hasn't enhanced
any help is apprieciated
I just want to know how can I redirect error msgs returned from running a command (e.g. nslookup) and then only print out the correct output using an if statement?.
I've tried the following:
Quote:
nslookup "$a" 2>bad_command
if [ ! -s bad_command ]
then
nslookup "$a" | grep -i "name =" | awk '{print $4}' >> hostnames
fi
if [ ! -s bad_command ]
then
nslookup "$a" | grep -i "name =" | awk '{print $4}' >> hostnames
fi
but I got all the error msgs printed out to screen and the corret values hasn't enhanced
any help is apprieciated
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