^ Character in Node Script Arguments

Question

I have a node script that is receiving the following argument: ^PPP.

I am calling the script as following: npm run scriptName ^PPP.

However inside the script if I do a console.log(process.argv), the output shows my argument as PPP.

I tried escaping the character as npm run scriptName \^PPP and npm run scriptName "^PPP" but to no avail.

Please help how can I receive the original string from the arguments.

PowerShell to run command and v10.16.2 node version

Not sure if this helps but double quotes has different meaning in bash. Try `npm run scriptName '^PPP'` — Rajesh, Nov 08 '19 at 14:34
What command line system are you using(windows,linux, etc)? ^ is an escape character in windows command so you may need to double escape it, eg `^^ppp` if that is what you are using — Patrick Evans, Nov 08 '19 at 14:35
as @Rajesh comment. It will surely works. And here is example :https://stackoverflow.com/questions/4351521/how-do-i-pass-command-line-arguments-to-a-node-js-program — lamtacvu, Nov 08 '19 at 14:35

Seblor · Accepted Answer · 2019-11-08T15:47:53.207

0

It depends on your terminal.

I made a simple script called args.js with

console.log(process.argv);

Using git bash on windows or WSL (Ubuntu), calling

$node args.js ^PPPP

Outputs

[ 'node/path', 'path/to/args.js', '^PPPP' ]

Using windows cmd terminal, calling

>node args.js ^PPPP

Outputs

[ 'C:\Program Files\nodejs\node.exe', 'C:\workspace\tests\args.js', 'PPPP' ]

and calling

>node args.js ^^PPPP

Outputs

[ 'C:\Program Files\nodejs\node.exe', 'C:\workspace\tests\args.js', '^PPPP' ]

So if you are using Windows's terminal, you need to double the ^ character (What does the single circumflex in the windows cmd shell mean: More?). On other terminals, it seems to work fine.

Edit: To add arguments to your node script from npm run, you need to separate them with -- like so:

>npm run scriptName -- ^^PPP

edited Nov 08 '19 at 15:47

answered Nov 08 '19 at 14:40

Seblor

Although I have just tested this and this is correct. This is only happening if I call the script directly by ```node scriptName ^^PPP``` but I am trying to run a script defined in the ```package.json```. So want I want to do (that is failing) is ```npm run scriptName ^^PPP``` and the latter is still not working. – Pedro Pereira Nov 08 '19 at 14:51
To add arguments to your node script from `npm run`, you need to separate them with `--` like so : `npm run scriptName -- ^^PPP` – Seblor Nov 08 '19 at 15:46

1 Answers1