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Small shell script help required

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# 1  
Old 08-06-2008
Small shell script help required
Hi Guys,

Please can some one explain me the below part of code. In this code what is the use of the line in Bold.

COPY=0
if [ -s $CONF ]; then
echo "$CONF exists and is non-empty - backing it up"
SUFFIX=`date +%Y%m%d%H%M%S`
echo "cp -p $CONF $CONF.$SUFFIX"
cp -p $CONF $CONF.$SUFFIX
[ $CLOBBER -ne 0 ] && COPY=1
else
COPY=1
fi

Regards,
Abhishek
# 2  
Old 08-06-2008
It means 'if the variable CLOBBER is not zero then set COPY=1'
# 3  
Old 08-06-2008
Ok Thanks for the help....

Regards,
Abhi
# 4  
Old 08-06-2008
you better read what && means
Operators
also read this
Test Constructs
# 5  
Old 08-06-2008
One more query......

I am trying to assign a value to a variable but getting error....

IP_ADDR=${`grep 'I.P. Address' /install/cfgdist/`uname -n`.cfg | cut -d : -f 2| cut -d . -f 1-3| sed s/" "//g`}

I am using this script to grep first three octets of an IP address from a file and assign the value to IP_ADDR....but I am not able to assign the value to the variable...

Please some one help.

Regards,
Abhishek
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