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# 1  
Old 01-30-2007
/dev/urandom
Hi, how do I use /dev/urandom to generate a single number between 1-100? I can od /dev/urandom but it gives me an endless list of random numbers, I just want 1 between 1-100. How can I get that? Thanks.
# 2  
Old 01-30-2007
In ksh,
((i=($(dd if=/dev/urandom bs=2 count=1 2>/dev/null| od -tu2 | sed -n '1s/0* *0*//p')/(65536/(100-1)))+1))
should do it. (I think...)
# 3  
Old 01-30-2007
Do you happen to know the command in sh?
# 4  
Old 01-31-2007
The command "dd" should be on any UNIX box. sh should see it. What error are you getting?
# 5  
Old 01-31-2007
Antique shells do not have built-in arithmetic for one thing. I would switch to ksh (which has been around for over 20 years now).
# 6  
Old 01-31-2007
I tried it in ksh but nothing happens.

In sh it says: Syntax error: word unexpected (expecting ")")
# 7  
Old 01-31-2007
It doesn't print anything

run the command, then echo $i
 
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