Hi Dan, > For what it's worth, "Mixing reads and writes" in perlopentut says > that you probably want: > > open (my $DATEFILE, "+<", $date_file) ...
Hmmm. I may give that a try, too! Thanks! -- Michael > -----Original Message----- > From: deni...@gmail.com [mailto:deni...@gmail.com] On Behalf Of Dan Scott > Sent: Saturday, March 17, 2012 4:19 PM > To: Doran, Michael D > Cc: perl4lib > Subject: Re: File open head scratcher > > On Sat, Mar 17, 2012 at 3:09 PM, Doran, Michael D <do...@uta.edu> wrote: > > I am migrating a perl script from a server running perl v5.8.5 on > Solaris 9 to a server running perl v5.12.2 on Redhat Linux 5.5. The new > environment doesn't seem to like the syntax I'm using to open a file, and > I'm scratching my head over why that is the case. > > > > That part that is not working appears to be where it opens and reads a > file (a file which it will later append to). The file that is being > opened for read and appending exists and contains data. > > > > This appears to be the relevant code: > > > > open (my $DATEFILE, "+>>$date_file") > > || die "Cannot open $date_file: $!"; > > The head-scratching behaviour you describe, where only the system call > outputs results, matches mine with perl 5.14.2. Maybe there's a > difference in the versions of perl on your two systems? > > For what it's worth, "Mixing reads and writes" in perlopentut says > that you probably want: > > open (my $DATEFILE, "+<", $date_file) ... > > (and making that change to my copy of your script makes it work for me). > > -- > Dan Scott > Laurentian University
