karimsa / ned

Transform text with javascript.

ned - node editor

use javascript to manipulate stdin.

Because sed is great but sometimes you just want some js.

Usage

To install, run npm i -g nedjs.

usage: ned [options] [function]
use javascript to manipulate stdin

  Types of manipulation:
    --filter, -f            Filter the input with [function]
    --reduce, -r [initial]  Reduce the input with [function]
    --sort, -s              Sort using [function] for comparisons
  
  Or leave out these flags to map over the input.
  
  General options:
    --trim, -t              Trim all data from stdin
    --single, -c            Replace all multiple spaces with a single space
    --delim, -d [delim]     Choose a delimeter to split by (delim is in regex)
    --join, -j [delim]      Choose a delimeter to join by (after processing)
    --numeric, -n           Treat all incoming data as numeric
    --version, -v           Output the version number
    --help, -h              Output help information

Examples

Say hi to everyone

$ cat test.txt
Bob
Joe
Anne
World
$ cat test.txt | ned 'name => "Hello, " + name'
Hello, Bob
Hello, Joe
Hello, Anne
Hello, World

Replace a delimeter in stdin

$ echo '1,2,3' | ned -d , -j '\n' 'a=>a'
1
2
3

Get sum of numbers

$ echo '1,2,3' | ned -d , -r 0 '(a,b)=>a+b'
6

Remove non-numbers

$ echo '1,2,3,a,b,c' | ned -fnd , -j ',' 'a=>a'
1,2,3

Find the number of lines in a file

$ cat -n myfile.txt | ned -tr 0 '(a,b)=>Math.max(a,b.split(/\s/)[0])'
166

OR:

$ cat -n myfile.txt | ned -tfn 'a=>a' -j '\n' | ned -r 0 '(a,b)=>Math.max(a,b)'
166

License

Licensed under MIT license.

Copyright © 2017 Karim Alibhai.