Re: Using $"

Tip #1 from the Basic debugging checklist: warnings

Filehandle INFO opened only for input at ...
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diagnostics:

Filehandle INFO opened only for input at ...
    (W io) You tried to write on a read-only filehandle.  If you inten
+ded
    it to be a read-write filehandle, you needed to open it with "+<" 
+or
    "+>" or "+>>" instead of with "<" or nothing.  If you intended onl
+y to
    write the file, use ">" or ">>".  See perlfunc/open.
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Comment on Re: Using $" Select or Download Code

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Re^2: Using $" by Bugz (Acolyte) on Dec 22, 2014 at 20:02 UTC
I tried "+<" and noticed that all but the first line had the # appended to it. Also instead of replacing the line in the file, the values were added to the end `D:\Perl_Samples>perl -w file_Modify.pl Alpha Beta Chi Delta EpsilonAlpha #Beta #Chi #Delta #Epsilon` [download]	[reply] [d/l]
Re^2: Using $" by Bugz (Acolyte) on Dec 22, 2014 at 19:57 UTC
I have tried to use "+>>" and ">>" to no avail.	[reply]
Re^3: Using $" by Lotus1 (Vicar) on Dec 22, 2014 at 20:10 UTC
The second time you open the file, it needs to be opened for output. `open(INFO1, ">", $file) or die "Couldn't open: $!\n";` It looks like you are using `$"` correctly so your question should probably be something about reading and writing to files. There are many tutorials on this topic for Perl.	[reply] [d/l] [select]