with gm 1.3.12 its easy
gm convert pdf:in.pdf jpeg:out.jpeg
results in
out.jpeg.0
out.jpeg.1
out.jpeg.2
etc..
with 1.3.16
gm convert pdf:in.pdf jpeg:out.jpeg
generate out.jpeg only (1st page from in.pdf)
gm convert pdf:in.pdf[2] jpeg:out.jpeg
e.g. nicely outputs 2nd page from pdf.
despite heavy searching I cannot seem to find how make 1.3.16 gm output all pages from pdf with one single command ( as it works in 1.3.12 ).
Thanks in advance.
Try this command:
gm convert pdf:in.pdf +adjoin jpeg:out.jpeg.%01d
(tested with GraphicsMagick 1.3.18)