Usage example
Cursor themes made by CursorXP/FX to X11 Mouse Theme Converter are not listed in gnome-appearance-properties(Appearance Preferences). This is because the size of left_ptr of the theme is not one of {12,16,24,32,36,40,48,64}px as is mentioned in Xのマウスカーソルのサイズについて(Sorry, Japanese only). I'm going to take Vienna3 as an example to solve this problem.
$ []wget 'http://fc02.deviantart.com/fs26/f/2008/165/1/d/J_Aroche__s_Vienna3_Converted_by_s0ury.zip'[]
$ []unzip J_Aroche__s_Vienna3_Converted_by_s0ury.zip[]
$ []ls[]
[]Vienna3.tar.gz[] []...abbrev...[]
$ []tar -zxf Vienna3.tar.gz -C ~/.icons/[]
[]expand into "~/.icons/". This operation is equal to use GUI(gnome-appearance-properties). []
$ []mkdir work; cd work[] []move to working directory[]
$ []xcur2png ~/.icons/Vienna3/cursors/left_ptr[]
[]Actually it's better to modify "4498f0e0c1937ffe01fd06f973665830" rather[]
[]than "left_ptr" in this case because the latter is a symbolic link to the formar,[]
[]but I do this here because it's commonly applicable operation.[]
$ []ls[]
[]left_ptr.conf[] []left_ptr_011.png left_ptr_023.png left_ptr_035.png[]
[]left_ptr_000.png left_ptr_012.png left_ptr_024.png left_ptr_036.png[]
[]...abbrev...[]
$ []cat left_ptr.conf[]
1 7 2 left_ptr_000.png 5
1 7 2 left_ptr_001.png 5
#...abbrev...
$ []perl -i -pe '@^1@32@g' left_ptr.conf[]
[]change the size of "left_ptr" from 1 to 32.[]
See http://d.hatena.ne.jp/tksmashiw/20080716 []about format of config-file.[]
$ []cat left_ptr.conf[]
32 7 2 left_ptr_000.png 5
32 7 2 left_ptr_001.png 5
#...abbrev...
With that, You will see Vienna3 listed in "Appearance".
$ []mogrify -crop 32x32+0+0 left_ptr_*.png[]
[]you don't need to cut the size of images into 32x32 like this,[]
[]but I do because of my mental health.;-)[]
$ []xcursorgen left_ptr.conf left_ptr[]
[]make X cursor as the name of left_ptr[]
$ []mv left_ptr.conf ~/.icons/Vienna3/cursors/left_ptr[]
[]write accomplished left_ptr over original place. []
In passing, "Button" and "03b6e0fcb3499374a867c041f52298f0" of Vienna3 are broken. It will be fixed in the same way as マウスカーソルテーマGreen Apparatus(Sorry, Japanese only).