Hello,

I am trying to remove the last line of many files, but only if that last line is a blank line. What I have here will truncate any last line, which I would like to revise. 

#! usr/bin/perl

opendir(FILES,".")||die "Cannot open files in the directory\n";
@files=();
for(readdir(FILES)){
    if($_=~/\.txt/){
        push(@files, $_);
    }
}
print "@files\n";
for $i(0..$#files){
print "working on $files[$i]\n";
open (FH, "+<$files[$i]") or die "can't update $file: $!";
while ( <FH> ) {
    $addr = tell(FH) unless eof(FH);
}
truncate(FH, $addr) or die "can't truncate $file: $!";
}
exit;

[download]
I can see that $addr is a position pointer, while what I'm interested in is the content of the last line...

The good thing about the above code is that it's very fast. Each of the file I have contains more than 30K lines, and I have hundreds of them, so I really don't want to do this by hand.

I would appreciate any help with this...
Thank you,

Hyunjin Choi

In reply to truncate only a last blank line by hj4jc

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