shuf

shuf shuffles its input by outputting a random permutation of its input lines.

based off https://www.gnu.org/software/coreutils/manual/html_node/shuf-invocation.html

CLI Usage

randomly output lines to stdout

npm i shuf -g
cat file | shuf

split into two files, with second limited to 15 lines telling shuf total initial lines (35410)

®[~]$ wc -l -c ~/Downloads/log2.txt
  35410  941848 /Users/ryan/Downloads/log2.txt
®[~]$ cat ~/Downloads/log2.txt  | shuf  a.out b.out --n=15 --lc=35410

split into two files, with second limited to 15 lines.

Less random, as more preference is given to earlier lines

®[~]$ cat ~/Downloads/log2.txt  | shuf  a.out b.out --n=15

split into n files, with equal probablity of going to each file

®[~]$ cat ~/Downloads/log2.txt  | shuf  a.out b.out c.out

License

MIT