shell - How to generate random numbers between 0 and 1 in bash -


i'm trying infer how generate 2 random numbers input values parameters of readproportion, updateproportion in way sum of these parameters should equal 1, in following bash command. 

$ ./bin/ycsb run basic -p workloads/workloada -p readproportion=0.50 -p updateproportion=0.50

please suggestions.

thanks

as far can remember ${random} generates integers in interval 0 - 32767. so, guess, might want try generate random values in [0,1]:

bc -l <<< "scale=4 ; ${random}/32767"

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