Convert

De Linuxmemo.

convert maphoto.jpg -resize 50% -strip -quality 50 -interlace line imageweb.jpg

convert IMGP1053.JPG -resize 20% imageweb.jpg

[modifier] Astuce

c=0;for i in *.jpg; do convert -verbose ${i} -resize 20% ${c}-${i} ;((c++)); done

for file in *.jpg; do convert "$file" "${file%.jpg}.pdf"; done

http://linuxmemo.free.fr/index.php?title=Varibles_bash#Expension_de_variable

[modifier] Bugs

convert-im6.q16: not authorized `CarteGriseExterC3.pdf' @ error/constitute.c/WriteImage/1037.

sudo mv /etc/ImageMagick-6/policy.xml /etc/ImageMagick-6/policy.xmlout
ou
sudo vim /etc/ImageMagick-6/policy.xml
<policy domain="coder" rights="none" pattern="PDF" />
Edit the file, and place comment marks around this line to disable this rule: