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sleep $[RANDOM/3600] works everywhere without requiring jot/seq etc. on BSD/Mac/Linux.



That will be a number between 1 and 10 ($RANDOM only goes to 32767), sleep $[RANDOM/10] would be better. :)

This might be platform dependent though, I can't find any standard RAND_MAX in bash so it's difficult to make this work everywhere.


This works in (da)sh (tweak 2 and 65536 if needed):

    sleep $(( 0x$(xxd -l2 -p /dev/random) * 3600 / 65536 ))


s/\//%/ I assume?


Oops

  s/\//\\%/
yeah.

  sleep $[RANDOM\%3600]




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