What is the correct syntax for running a Node.js script with command-line arguments on Linux or Mac?
To run the script with no arguments, I would simply use the command node stuff.js, but in this case, I'd like to run a script called stuff.js with the arguments "blah", "hee", "woohoo!".
See http://nodejs.org/docs/latest/api/process.html#process_process_argv
In summary you'll run it like
node stuff.js blah hee "whoohoo!"
Then your arguments are available in process.argv
ah hah and needed to add that to the list of parameters? Would you also have to quote it like you did for woohoo! above so that the invocation is node stuff.js blah hee "whoohoo!" "ah hah"? The argv documentation doesn't get into details about vars with spaces, which is important because it appears to delimit on spaces.Nomnom is another possible solution.
This simple node module is also helpfull: command-line-args
It allows to define a simple definition:
const optionDefinitions = [
{ name: 'verbose', alias: 'v', type: Boolean },
{ name: 'src', type: String, multiple: true, defaultOption: true },
{ name: 'timeout', alias: 't', type: Number }
]
It validates your options and allows you to access them in a simple way.
The arguments are stored in
process.argv and to pass the arguments in command line please check below example:
ex. in this example below i have used commander NPM Module. var args = require('commander')
Options with commander are defined with the .option() method. The example below parses args and options from process.argv, leaving remaining args as the program.args array which were not consumed by options. here process.argv is An array containing the command line arguments. The first element will be 'node', the second element will be the name of the JavaScript file. The next elements will be any additional command line arguments after executing.
function list(val) {
return val.split(',');
}
args.version('0.11.2')
.option('-t, --tag [value]', 'tags to ignore', list, undefined)
.parse(process.argv);
here to take input from command-line, we have to execute .js file with -t and after that arguments separated by comma(,)incase of multiple arguments ex. : node example.js -t tagname here i have used list to process multiple command line arguments ,so that we can pass multiple command line arguments ex. node example.js -t tagname1, tagname2 so after this , all input passed as command line arguments will be available in array named args, so can use this array for your purpose and you can read more about it from here:-
https://nodejs.org/docs/latest/api/process.html#process_process_argv
or you can make use of the following modules :
