npm_wcat

A module that prints a file's contents, and appends line numbers to each line on the way to process.stdout

to install

npm install -g wcat

to use , pass in a filename as a cmd line argument

wcat filename.txt

example terminal output

mark@squirtle:~/wcat$ wcat ./lib/wcat.js
1	 //wcat.js
2	 exports.wcat = function(filename){
3	 
4	 	if(!filename){
5	 		console.log("Please supply a filename as a command line argument.");
6	 		process.exit(0);
7	 	}
8	 
9	 	var fs = require("fs");
10	 	var through = require("through");
11	 	var split = require("split");
12	 	var lineNum = 0;
13	 	var prependLineWithNumber = function(buf){
14	 		lineNum++;
15	 		this.queue( lineNum + "\t " + buf.toString() + "\n");
16	 	}
17	 	var readable = fs.createReadStream(filename)
18	 		.pipe(split())
19	 		.pipe(through(prependLineWithNumber))
20	 		.pipe(process.stdout);
21	 
22	 }