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Openning and writing back to same file

Openning and writing back to same file

Openning and writing back to same file

I want to open a file, modify it and then write back to the same file. This does not work, but I do not know why. Does asnyone know?

# Read the file in grep
  open (INFILE,"c:/TREEINFO.WC") or die "Error $f_file: $!";
  @lines = <INFILE>;
  close INFILE;
  open (OUTFILE,">c:/TREEINFO.WC") or die "Error $f_file: $!";

# Loop and print the subs value
  foreach $line (@lines) {
    $line =~ s! {2,}$!!;
    print OUTFILE "$line";

RE: Openning and writing back to same file

what is happening that it is not working? do you get an error or does the file just remain the same as it was before?


RE: Openning and writing back to same file

an obvious question probably, but what is this bit meant to do?

$line =~ s! {2,}$!!;


RE: Openning and writing back to same file

I think that is trying to replace 2 spaces at the end of the string with null.  The pattern matching will allow you to use delimiters other than '/' for the find and replace definitions.

 keep the rudder amid ship and beware the odd typo

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