Graff - thanks for your reply. The files are small - around 112k to 236k. The replacement pattern can be whatever I want it to be but only 10 characters in length (no metacharacters). A perl one liner from the command line can do this easily but the string to replace is unknown at the time and a one-liner is not acceptable it needs to be in a perl script not shell. I could easily do this with a small bash script with a for loop and awk,sed and grep but Perl is the edict. My code so far works as far as finding the replacement string which is different in each file because it is a serial number and I can easily change it in that one spot using print (FH $replacementvalue) but cannot figure out how to do a global substitute even setting seek back to the beginning of the file. Code Below:
opendir(TKS, $tktdir) || die "Oops ... $!";
my @files = readdir TKS;
my $cntr = "000";
foreach my $file (@files)
unless ( ($file eq ".") || ($file eq "..") )
my $sncount = "$tapeDev$cntr";
open(FH,"+<$file") or warn "Oops - Cant open ticket $!";
$offset = tell (FH);
print (FH "$sncount");
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