usage:  oneko [options] ....

Options are:
-display <display>        specifies the the display name.
-bitmapdir <dir>          specifies the directory name contains bitmap files.
-kotatsubitmap <bitmap>   specifies a bitmap file name for "kotatsu".
-kotatsubitmask <bitmap>  specifies a bitmap mask file name for "kotatsu".
-mousebitmap <bitmap>     specifies a bitmap file name for mouse cursor.
-mousebitmask <bitmap>    specifies a bitmap mask file name for mouse cursor.
-speed <speed>            specifies the speed of the cat.
-time <interval>          specifies the interval between updates of the cat.
-idle <pixels>            specifies the maximum number of pixels the mouse can
                          move while the cat remains idle.
-fg <color>               specifies the foreground color of the cat.
-bg <color>               specifies the background color of the cat.
-kfg <color>              specifies the foreground color of the "kotatsu".
-kbg <color>              specifies the background color of the "kotatsu".
-mfg <color>              specifies the foreground color of the mouse cursor.
-mbg <color>              specifies the background color of the mouse cursor.
-noshape                  tells oneko not to use the X shape extension.
-nomouse                  do not effect root cursor.
-saveunder                tells oneko to use save under function.
-mail                     check mail has arrived.
-update <sec>             interval time (seconds) for checking mail.
-file <file_name>         specifies file name to check mail.
-autoraise                always raise up himself.
