Shell Programming and Scripting

#! /bin/bash
file1=`ls /tmp/masterCSF* | head -1`
file2=`ls /tmp/indexCSF* | head -1`
if [ -z "$file1" ]; then
 echo " Only indexCSF file is available"
exit 1
fi
val1=`echo "$file1" | tr -dc [0-9]`
val2=`echo "$file2" | tr -dc [0-9]`
if [ "$val1" = "$val2" ];then
echo "File match"
else
echo "File does not match"
fi

  let MSTNUM=$(echo masterCSF242323.img | sed -e 's/[^0-9]*//g')
  let IDNUM=$(echo indexCSF242323.img | sed -e 's/[^0-9]*//g')
 
  if [[ ${MSTNUM} -eq ${IDNUM} ]]; then
     echo "The numbers are equal"
 else
     echo "They are not"
 fi

MST=masterCSF242323.img 
MSTNUM=${MST%.img}; MSTNUM=${MSTNUM#masterCSF}
IDT=indexCSF242323.img 
IDNUM=${IDT%.img}; IDNUM=${IDNUM#indexCSF}
 
if [[ ${MSTNUM} -eq ${IDNUM} ]]; then
     echo "The numbers are equal"
else
     echo "They are not"
fi

m/^index(CSF|TAS)([0-9a-zA-Z]+)\.([a-zA-Z][a-zA-Z][a-zA-Z])$/i

$ wc -l perl-backup.pl bash-backup.sh
  49 perl-backup.pl
  25 bash-backup.sh
  74 total
$

#!/usr/bin/perl

my $FILE1="masterCSF242323.img";
my $FILE2="indexCSF242323.img";

$FILE1 =~ /([0-9]+)\.[^0-9]*$/;
$NUM1=$1;
$FILE2 =~ /([0-9]+)\.[^0-9]*$/;
$NUM2=$1;