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December 28, 2016 14:59
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black and white a lot of pictures (jpg, jpeg, png)
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| clean_extensionjpg(){ | |
| mmv \*.[Jj][Pp][Gg] \#1.jpg | |
| mmv \*.[Jj][Pp][Ee][Gg] \#1.jpg | |
| } | |
| clean_extensionpng(){ | |
| mmv -v \*.[Pp][Nn][Gg] \#1.png | |
| } | |
| clean_extension(){ | |
| clean_extensionpng | |
| clean_extensionjpg | |
| } | |
| gray(){ | |
| for img in $(find . -maxdepth 1 -iname '*'$1) | |
| do | |
| echo -n "Converting $img" | |
| cp -f $img backup/$img | |
| convert -colorspace GRAY $img $img && echo ' [Done]'; | |
| done | |
| } | |
| mkdir backup | |
| clean_extension | |
| gray jpg | |
| gray png |
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you should install mmv
(for debian :
apt-get install mmv)