add random

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onceupon 2016-06-27 13:54:48 +08:00 committed by GitHub
parent 60d47f7bb6
commit 528c924d0e

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@ -21,6 +21,7 @@ http://bbonut.blogspot.tw
- [Find](#find) - [Find](#find)
- [Loops](#loops) - [Loops](#loops)
- [Download](#download) - [Download](#download)
- [Random](#random)
- [Others](#others) - [Others](#others)
- [System](#system) - [System](#system)
@ -461,6 +462,35 @@ if no subdirectory
//-e robots=off: ignore the robots.txt file which stop wget from crashing the site, sorry example.com //-e robots=off: ignore the robots.txt file which stop wget from crashing the site, sorry example.com
##Random
[[back to top](#handy-bash-oneliner-commands-for-tsv-file-editing)]
#####random pick 100 lines from a file
shuf -n 100 filename
#####random order (lucky draw)
for i in a b c d e; do echo $i; done| shuf
#####echo series of random numbers between a range (e.g. generate 15 random numbers from 0-10)
shuf -i 0-10 -n 15
#####echo a random number
echo $RANDOM
#####random from 0-9
echo $((RANDOM % 10))
#####random from 1-10
echo $(((RANDOM %10)+1))
##Others ##Others
[[back to top](#handy-bash-oneliner-commands-for-tsv-file-editing)] [[back to top](#handy-bash-oneliner-commands-for-tsv-file-editing)]
#####remove newline / nextline #####remove newline / nextline
@ -598,13 +628,6 @@ or
pip install packagename pip install packagename
#####random order (lucky draw)
for i in a b c d e; do echo $i; done| shuf
#####echo a random number
echo $RANDOM
#####Download file if necessary #####Download file if necessary