Deleting a line from file.
Code:
#!/usr/bin/perl -w $delete = "he";
$infile="bar.txt";
$outfile="shift.txt";
open (IN, "$infile");
open (OUT, ">$outfile");
@temp=<IN>;
foreach $line (@temp) {
if($line !~ m/^$delete/i)
{
print OUT $line;
}
}
close (IN);
close (OUT);
exit;
The above code is working fine, no problems in it.
What I needed is to write the output to same file.
Means after deleting the desired lines, the IN file should be re-written rather than creating a new OUT file.
So I made the following modification to it.
Code:
#!/usr/bin/perl -w $delete = "he";
$infile="bar.txt";
$outfile="shift.txt";
open (IN, "$infile");
open (OUT, ">$outfile");
@temp=<IN>;
foreach $line (@temp) {
if($line !~ m/^$delete/i)
{
print OUT $line;
}
}
close (IN);
close (OUT);
unlink ($infile);
rename ($outfile, $infile);
exit;
But I don't know why I am not satisfied with modification, however its working fine too. Just want to confirm are there any other ways to do the same??
Any better options?
Thanks,
Zeshan.
Thanks,
Deleting a line from file.