[rrd-users] can't use -B.-O flag

[^Herman^]

rrdtool graph /home/herman/public_html/stats/misc_test.gd --start -1d \
--title "Misc. \
DEF:cs=vmstat.rrd:cs:AVERAGE \
DEF:intr=vmstat.rrd:int:AVERAGE \
CDEF:allusers=cs,intr,+ \
CDEF:wrongdata=allusers,UN,INF,UNKN,IF \
AREA:wrongdata#FF0000:"Wrong data" \
AREA:cs#ff3377:"(Context switches/s)" \
LINE2:intr#0000ff:"Intr/s"

Executes cleanly and gives me a gd image.

root at systemoperator:/home/herman/stats# sh test.sh
495x172

Now i use this image as background since i do not know how to generate a 
.gd image from a jpg/bmp/gif

rrdtool graph /home/herman/public_html/stats/misc_test.gd --start -1d \
--title "Misc. $arg" \
-B /home/herman/public_html/stats/misc_test.gd \
DEF:cs=vmstat.rrd:cs:AVERAGE \
DEF:intr=vmstat.rrd:int:AVERAGE \
CDEF:allusers=cs,intr,+ \
CDEF:wrongdata=allusers,UN,INF,UNKN,IF \
AREA:wrongdata#FF0000:"Wrong data" \
AREA:cs#ff3377:"(Context switches/s)" \
LINE2:intr#0000ff:"Intr/s"


after 2 minutes the program segfaults.

root at systemoperator:/home/herman/stats# sh test.sh
test.sh: line 11:  7826 Segmentation fault      rrdtool graph 
/home/herman/public_html/stats/misc_test.gd --start -1d --title "Misc. 
$arg" -B /home/herman/public_html/stats/misc_test.gd 
DEF:cs=vmstat.rrd:cs:AVERAGE DEF:intr=vmstat.rrd:int:AVERAGE 
CDEF:allusers=cs,intr,+ CDEF:wrongdata=allusers,UN,INF,UNKN,IF 
AREA:wrongdata#FF0000:"Wrong data" AREA:cs#ff3377:"(Context switches/s)" 
LINE2:intr#0000ff:"Intr/s"


I can't get the overlay and background pictures to work.

so I have 2 questions.

1. How do i convert ANY image to gd format.
2. Why does it segfault over and over. and how can i fix this ?

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