激进随机值生成器

randical 是一个简单的 UNIX 命令行工具，用于生成一系列具有均匀分布的不同类型的随机值。下面是使用方法和示例。

Radical Random Value Generator 1.618033

Generates arbitrary numbers of uniformly distributed random values.

USAGE:
    randical [FLAGS] [OPTIONS]

FLAGS:
        --buel       Prints either 'Here.' or 'Um, he's sick. My best friend's sister's boyfriend's brother's girlfriend
                     heard from this guy who knows this kid who's going with the girl who saw Ferris pass out at 31
                     Flavors last night. I guess it's pretty serious.', with equal probability. Not compatible with `-t`
                     or `--bule`.
        --bule       Prints either 'true' or 'false', with equal probability. Not compatible with `-t` or `--buel`.
    -e, --exit       With equal probability, exit with either status 0, like /bin/true, or status 1, like /bin/false.
                     Technically compatible with all other options, but exit status will have no relation to any
                     generated output. Sets default number of values to print to 0.
    -h, --help       Prints help information
    -V, --version    Prints version information

OPTIONS:
    -n, --num-vals <NUM_VALS>    Number of random values to print out. Defaults to 1.
    -t, --type <TYPE>            Type of random value to print. Defaults to 'bool'.
                                 Possible values are 'b'ool, 'f'loat64, 'U'UIDv4, 'u'nsigned64, 's'igned64, and 'k'suid
                                 with millisecond precision.

一些示例

$ randical -n 3     # print out three bools
Bogus.
Radical!
Radical!

$ randical -t u 	# 64-bit unsigned integers
5787939472744910229

$ randical -t s 	# 64-bit signed integers
-3655402238002064604

$ randical -t f 	# floating-point numbers from [0,1)
0.603028217883161

$ randical -t U 	# v4 UUIDs
0237bf92-a629-440a-a1b5-ae32741b8ebd

$ randical -e       # exit with status 0 or 1, with equal probability
$ echo $?
1
$ randical -e
$ echo $?
0
$ randical -t k -n 3 # print out three "K-sorted UID"s; see https://segment.com/blog/a-brief-history-of-the-uuid/
27wOG5VmO0vOzDsk66ELjzDa20X
27wOG5WdjugQa5HTnGr9IABktzF
27wOG5WK0MgZ49lrBUNWGe6XDFI

您可以用它在 shell 中进行一些简单的建模，如下所示

• 模拟公正的硬币投掷

$ for i in {1..10} ; do (randical -e && echo heads) || echo tails ; done
heads
heads
tails
tails
heads
heads
tails
heads
heads
heads

• 模拟不公正的硬币投掷

$ for n in $(randical -n 10 -t f) ; do echo -n "unfair coin is " ; ((($n < 0.25)) && echo -n tails) || echo -n heads ; echo " ($n)" ; done
unfair coin is tails (0.08358173070875441)
unfair coin is heads (0.6536652844106665)
unfair coin is heads (0.25506794504375785)
unfair coin is heads (0.8781122125361713)
unfair coin is heads (0.3413074383739916)
unfair coin is heads (0.9068801316813913)
unfair coin is heads (0.6210935828659315)
unfair coin is heads (0.834424540129461)
unfair coin is heads (0.5440078767522896)
unfair coin is heads (0.615928198757337)

• 模拟《Ferris Bueller 的日子》中命运之日的“滑动门”风格的分叉时间线，展示 Ferris Bueller 是否在那一天出现

$ for i in {1..5} ; do echo "----" ; echo "Bueller? Bueller?" ; randical --buel ; done
----
Bueller? Bueller?
Here.
----
Bueller? Bueller?
Um, he's sick. My best friend's sister's boyfriend's brother's girlfriend heard from this guy who knows this kid who's going with the girl who saw Ferris pass out at 31 Flavors last night. I guess it's pretty serious.
----
Bueller? Bueller?
Here.
----
Bueller? Bueller?
Um, he's sick. My best friend's sister's boyfriend's brother's girlfriend heard from this guy who knows this kid who's going with the girl who saw Ferris pass out at 31 Flavors last night. I guess it's pretty serious.
----
Bueller? Bueller?
Um, he's sick. My best friend's sister's boyfriend's brother's girlfriend heard from this guy who knows this kid who's going with the girl who saw Ferris pass out at 31 Flavors last night. I guess it's pretty serious.