Shell Programming and Scripting

#!/bin/bash

echo -e "Please enter the Circuit ID : \c"
read CID
CMD="find . -type f -exec grep -H "'$CID'" {} \;"
CNT="$CMD | wc -l"
eval $CNT
read Z


if [ "$Z" != 0 ] ;
then
echo " the Circuit ID : $CID is duplicate "
echo " Please find below the list where the Circuit ID is present :"
eval $CMD
exit 0
else
echo " the Circuit ID : $CID  is unique. "
fi

 [ $(grep -c "$CID" dhcp.conf) -gt 1 ] && echo duplicate || echo unique

#!/bin/bash


echo -e "Please enter the Circuit ID : \c"
read CID
[ $(grep -c "$CID" dhcp.conf) != 0 ] && echo " the Circuit ID : $CID is duplicate " || echo " the Circuit ID : $CID  is unique. "
echo -e "Please enter Subnet mask: \c"
read SB
if [ "$SB" != 255.255.224.0 ]
then
echo " The Subnet Mask is not /19 as per requirement. Please correct it "
else
echo " The Subnet Mask is /19 which is required "
fi