batch conversion from cmd line

[Bodo]

I want to use ImageMagick for batch file conversion; PNG format pictures to JPG.

On a single image,

bodo@bulldog:~> convert picture.png picture.jpg

works very well.

Now, when I type

bodo@bulldog:~> convert *.png <what goes here?>.jpg

"$" and "%f" don't work. Does anyone know how to do it without a shellscript?

[GreenV8S]

If you have a version of DOS with command line extensions (NT onwards I believe) you should be able to do something like:

c:> for %f in ( *.png ) do convert %f

There's also a syntax for stripping the extension off so you can replace .png with .jpg or whatever.

[JamieBeeston]

You would have to make a simple script I imagine.

You can batch convert, but It wouldnt appear to retain the filenames, so not much use.

A simple shell script will do.

Lemme know if you want me to get one of my coders to knock you (summin) up

[Bodo]

Cheers, gentlemen!
I use bash on Linux, so the DOS prompt suggestion didn't work.

Jamie, thanks for the offer. I guess I'll try to research a little bit further. The manpages of ImageMagick are HUGE

[JamieBeeston]

Highly Overpaid Coder said:

#!/bin/sh for a in `ls *.png` do nf=`convert $a ${a%.png}.jpg` done;

Stick that in a bodo.sh

chmod bodo.sh +x

then just execute it in the dir with the .png files in, it will read them in and pass the relevant details to convert (assuming its pathed! if not edit the script for full convert path)

its very basic, with NO error checking.. so use at own risk blah blah.

Worked when I tested this end tho.

Enjoy.

[Bodo]

JamieBeeston said:

Highly Overpaid Coder said: #!/bin/sh for a in `ls *.png` do nf=`convert $a ${a%.png}.jpg` done; Stick that in a bodo.sh chmod bodo.sh +x then just execute it in the dir with the .png files in, it will read them in and pass the relevant details to convert (assuming its pathed! if not edit the script for full convert path) its very basic, with NO error checking.. so use at own risk blah blah. Worked when I tested this end tho. Enjoy.

Cheers, Jamie! Works very well

I owe you a pint

[JamieBeeston]

Bodo said:

cheers, Jamie! Works very well I owe you a pint

Its ok, I owe my coder £40k for that

At london prices, thats about even I suppose


Glad its sorted tho.

J