Checking the header and trailer for a given string and if not found, exit out of the

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# 1  
Old 11-07-2007
Checking the header and trailer for a given string and if not found, exit out of the


How to check a given file for a string and if it's not found, exit out ofthe script?
e.g. a file Test123 is there whose header begins with #bt and trailer begins with #ed.
I have to check if the header and trailer matches as above and if not, exit out of the script.
How can we do it in Unix and perl.

Thanks in advance.
# 2  
Old 11-07-2007
# $1 = input file

head -n 1 $1 | grep -q '^#bt'  && tail -n 1 $1 | grep -q '^#ed' && found=1

if [[ found -eq 0 ]] ; then
  exit 1
echo "okay"

tested with this file:
#bt header
#ed trailer
# 3  
Old 11-08-2007
Thanks a lot....
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