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Generating Random Number in certain range

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# 1  
Old 04-07-2014
Generating Random Number in certain range
Hi there I am trying to generate a random number between 40 and 70 using the shell here is my code so far and it keeps going above 70. all help much appreciated!
Code:
comp=$(( RANDOM%70+40 ))
echo $comp

# 2  
Old 04-07-2014
Code:
comp=$(( RANDOM%31+40 ))

This User Gave Thanks to wisecracker For This Post:
faintingquiche
# 3  
Old 04-07-2014
If available on your flavor of 'nix, you can use the shuf command:

Code:
shuf -n 1 -i 40-70

This User Gave Thanks to in2nix4life For This Post:
faintingquiche
# 4  
Old 04-07-2014
thank you very much that worked perfectly :-)
# 5  
Old 04-07-2014
To generalize it:

Code:
MIN=10
MAX=20
echo $(( (RANDOM%((MAX-MIN)+1))+MIN))

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