using exec in find, awk? xargs?

[Pat Farrell]

I want to run the ImageMagick "convert" program on a bunch of files. The find command is the obvios way to find the files.

find . -name "*.tif" -print
works perfectly.

What I want to do is run the convert program, something like

convert foo.tif foo.png

So I want to get the name and add a new extension, .png

Any help or even hints will be greatly appreciated.

[Andrew Monkhouse]

If you know that your files will all end in tiff, then you could just use sed:

FILES=$(find . -name "*.tif" -print)
for FILE in $FILES; do
    OUT=$(echo $FILE | sed 's/tif$/png/')
    convert $FILE $OUT
done

(Untested, but it should work, unless you have spaces in your filenames, in which case that is a separate problem)

[Tim Holloway]

If you're truly evilly-minded, use the "xargs" utility and do it as a one-liner. I'm not up to actually attempting this on the spot, but if would be something vaguely resembling this, I think:

find -name "*.tif" | xargs "{}" `basename "{}"`.png

The trickiest part is probably going to be the filename subsitution on the xargs command, but I believe that using double-quotes around the braces is the way it works.