BASH question

tpe · 11-17-2004, 01:47 PM

Hallo,
I have a BASH related question. I am not sure that I post at the right forum, so my apologies if so.

Now the problem:
I use the following script in order to convert a few 100 images to different sizes:

Code:

for i in *.jpg; do
	convert "$i" -quality 75 +resize "300" +sharpen "1x34" -crop "300x200+0+0" "$i.300";
	convert "$i" -quality 75 +resize "225" +sharpen "1x34" -crop "225x150+0+0" "$i.225";
	convert "$i" -quality 75 +resize "150" +sharpen "1x34" -crop "150x100+0+0" "$i.150";
done

When I run the script "convert" tells me that:

Code:

convert: Unable to open file (300) [No such file or directory].
convert: Unable to open file (225) [No such file or directory].
convert: Unable to open file (150) [No such file or directory].

Please note the period at the end of each line. Since the images are created with the .300, .225, .250 extension, the problem seems to be the "$i.300" at the command. Obviously I do not know a lot about bash, so eny help would be appreciated.

Thank you
Peter

wapcaplet · 11-17-2004, 02:16 PM

Try using -sharpen instead of +sharpen. I think the + is only used for options that can be disabled. That +/- syntax with ImageMagick is pretty confusing (-antialias to turn antialising on, +antialias to turn it off, etc.)

XsuX · 11-17-2004, 03:48 PM

Have you tried taking the quotation marks away from around the $i ? IDK, but that doesn't seem quite right...

Also have you tried
for i in `ls *.jpg`

Or is that not what you want? I'm just sort of throwing ideas off the top of my head, so don't take them too seriously, but personally that's what I would try. Because, methinks, the way it is, it's looking for a file called "*.jpg"

edit: those are back quotes around ls *.jpg, same key as the ~

tpe · 11-17-2004, 04:17 PM

Quote:

Originally posted by wapcaplet
Try using -sharpen instead of +sharpen. I think the + is only used for options that can be disabled. That +/- syntax with ImageMagick is pretty confusing (-antialias to turn antialising on, +antialias to turn it off, etc.)

I did but it didn't work!
I also tried to play a littl bit with the values of sharpen that I use from GIMP (Filters, Enhance, Sharpen) with is 34. And the best solution I found was +sharpen 1x34

tpe · 11-17-2004, 04:38 PM

Quote:

Originally posted by XsuX
Have you tried taking the quotation marks away from around the $i ? IDK, but that doesn't seem quite right...

Also have you tried
for i in `ls *.jpg`

Or is that not what you want? I'm just sort of throwing ideas off the top of my head, so don't take them too seriously, but personally that's what I would try. Because, methinks, the way it is, it's looking for a file called "*.jpg"

edit: those are back quotes around ls *.jpg, same key as the ~

Thank you for you tips but I use ` at rpm -ql `rpm -qa | grep -i pachagename", since I do not want to use 2 commands

Now:
If you remove the " then, in case a file is named "blabla large.jpg" you have a problem! The `ls *.jpg` is the same thing as "for i" and since i is replaced by the blabla large.jpg, you do not have a problem...

After a few tests (the -verbose is very usefull!), I found that the problem is on the "+resize 300". I changed the + with - and everything is fine! I suppose that I have to escape the + or something like this.

Thank you for your time and help

wapcaplet · 11-17-2004, 07:31 PM

Quote:

Originally posted by tpe
After a few tests (the -verbose is very usefull!), I found that the problem is on the "+resize 300". I changed the + with - and everything is fine! I suppose that I have to escape the + or something like this.

Doh, that is what I meant to say

There is no +resize option, only -resize. I suspect the +resize was being ignored, and the "300" was being interpreted as a filename.

XsuX · 11-17-2004, 08:59 PM

Quote:

Originally posted by tpe
Thank you for you tips but I use ` at rpm -ql `rpm -qa | grep -i pachagename", since I do not want to use 2 commands
Now:
If you remove the " then, in case a file is named "blabla large.jpg" you have a problem! The `ls *.jpg` is the same thing as "for i" and since i is replaced by the blabla large.jpg, you do not have a problem...

After a few tests (the -verbose is very usefull!), I found that the problem is on the "+resize 300". I changed the + with - and everything is fine! I suppose that I have to escape the + or something like this.

Thank you for your time and help

ahhh... like I said, I didn't really understand what you were trying to accomplish there, so my ideas were very, very broad. Glad you figured it out, tho.