How to delete a pattern with tr

[J-Dude]

Hi, I feel silly for asking this, but how do you delete a pattern using tr?

I did this in a perl script:

system("cat $scrapedFile | tr --delete /M >$charsRemovedFile");

Which seems okay, until I just realized it deletes all capital M's, too. I only want it to delete when the specific pattern /M is found. I've tried different ways, but keep failing.

Thanks,
James

[ghostdog74]

do everything in Perl if you are using Perl.

open( F,"<" ,"file") or die "Cannot read file:$!\n";
while(my $line = <F>){
  # see perldoc -f tr 
}

[J-Dude]

Thanks, that got me on my way. You've helped my meager perl knowledge go up a step