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renaming 50k files, whats the best way?

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# 1  
Old 01-12-2006
renaming 50k files, whats the best way?
Because I am not creative, I did this:
find . -type f -name '*.GIF'|cut -d'/' -f2|awk -F. '{print "mv "$1".GIF "$1".gif --reply=yes"}' > case.sh

Then ran the case.sh - I was wondering if you guys could come up with something more efficient? Or even limit CPU useage? It is killing my poor ext3 linux server.
# 2  
Old 01-12-2006
ls *.GIF | xargs -I {} basename {} .GIF | xargs -I {} mv {}.GIF {}.gif
# 3  
Old 01-13-2006
nice - yes this is much better, although I still had to use find (ls broke). Thanks!
# 4  
Old 01-13-2006
In ksh:

for i in *.GIF ; do echo mv $i ${i%.*}.gif ; done

Use the echo to preview what this will do. Make sure the output looks good. Then rerun the above command without that "echo" to actually do the moves.
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