Shell Programming and Scripting

Hello!

I'm desperately trying to write a makefile that converts and scales jpeg files to png files in subdirectories

I want to use netpbm, so I just need the commands:
anytopnm
pnmscale
pnmtopng


For various reasons i want to use a makefile. This is the first time i use the make tool and it's a too complicated for me.
Here is my attempt, without resizing untill now:

Code:

all :
    find -name "*.jpeg" > alljpeg.txt
    @anytopnm `cat alljpeg.txt | sort | uniq -u` > $@.png 
    @echo "$@" >> clean.log

but it doesn't work, I already had six attempts but always the same, I'm reading now for 4 hours an I still think I#m not any closer to a solution.

Any help will be appreciated!

Clueless greetings

Henningbaer

Hi, anytopnm can only take one file as a parameter at a time, so I think you will need to create a for loop.