Re: mogrify not working

A few points. Are you sure that slide_name is being passed? You may want to save the mogrify command output to a variable and look at what is returns.

my $ret = `/usr/bin/mogrify -flip $slide_name`;
print "\n" . $ret . "\n";
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Comment on Re: mogrify not working Download Code

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Re^2: mogrify not working by rbhyland (Acolyte) on Mar 02, 2014 at 19:53 UTC
I have printed the slide_name and it is OK. I printed the mogrify command without any parameters and got its explanatory usage text. When I print the before and after images there is no change.	[reply]
Re^2: mogrify not working by rbhyland (Acolyte) on Mar 02, 2014 at 19:57 UTC
I tried your code and it worked! But only once. When I ran the script again it didn't flip the picture back. ?!	[reply]
Re^3: mogrify not working (image caching) by kcott (Archbishop) on Mar 02, 2014 at 23:14 UTC
"I tried your code and it worked! But only once. When I ran the script again it didn't flip the picture back. ?!" It's possible the image is being cached: what's displayed in the browser may just be a copy of what was displayed from the last run. Check the actual file on disk to see if it's being flipped between runs. If it is a caching issue, you may need to set a short expiration date. See CGI: CREATING A STANDARD HTTP HEADER for details. -- Ken	[reply]
Re^2: mogrify not working by rbhyland (Acolyte) on Mar 02, 2014 at 20:01 UTC
Printing $ret gives nothing at all.	[reply]
Re^3: mogrify not working (backticks return value) by kcott (Archbishop) on Mar 02, 2014 at 23:22 UTC
"Printing $ret gives nothing at all." See perlop: Quote-Like Operators for information about what's returned by `...` and how to change it. -- Ken	[reply] [d/l]
Re^3: mogrify not working by onelander (Sexton) on Mar 02, 2014 at 20:05 UTC
I just ran that mogrify command and it does not return anything if it appears to run correctly.	[reply]