| 1 | ## oils_failures_allowed: 0
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| 2 | ## compare_shells: bash mksh zsh ash
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| 3 |
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| 4 | #### $RANDOM produces random numbers
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| 5 | [[ -n $RANDOM ]] && echo set
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| 6 |
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| 7 | a=$RANDOM
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| 8 | b=$RANDOM
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| 9 | [[ $a -ne $b ]] && echo random
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| 10 |
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| 11 | ## STDOUT:
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| 12 | set
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| 13 | random
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| 14 | ## END
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| 15 |
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| 16 | #### RANDOM=seed seeds a sequence of random numbers
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| 17 |
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| 18 | # mksh doesn't implement seeding
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| 19 | case $SH in mksh) exit 0 ;; esac
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| 20 |
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| 21 | RANDOM=2
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| 22 | echo $RANDOM
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| 23 | echo $RANDOM
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| 24 |
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| 25 | ## STDOUT:
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| 26 | ## END
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| 27 | ## OK ash STDOUT:
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| 28 | 16531
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| 29 | 7559
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| 30 | ## END
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| 31 | ## OK zsh STDOUT:
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| 32 | 6138
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| 33 | 31103
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| 34 | ## END
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| 35 | ## OK bash STDOUT:
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| 36 | 846
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| 37 | 21582
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| 38 | ## END
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| 39 | ## OK osh STDOUT:
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| 40 | 6138
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| 41 | 31103
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| 42 | ## END
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| 43 | ## OK oils-cpp STDOUT:
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| 44 | 6138
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| 45 | 31103
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| 46 | ## END
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| 47 | ## BUG mksh STDOUT:
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| 48 | ## END
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| 49 |
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| 50 | #### unset RANDOM resets its special function
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| 51 |
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| 52 | unset RANDOM
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| 53 | [[ -z $RANDOM ]] && echo empty
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| 54 |
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| 55 | ## STDOUT:
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| 56 | empty
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| 57 | ## END
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