@perl/system

Run a command and capture it's return status.

const system = require('@perl/system')

// run ls -l, dumping output to stdout, returning status code
const status = await system('ls -l')

// also available in synchronous version
const status = system.sync('ls -l')

// and with callbacks
system('ls -l', (err, status) => console.log(`Code: ${status}`))

// or don't pass the command to a shell
const status = await system('ls', ['-l'])

// avoiding the shell without arguments
const status = await system('ls', [])

system(cmd[, args][, cb]) → Promise(status)

Without args, passes cmd to a shell to execute. We use cross-spawn to do this in a platform compatible manner. As this is a shell command it's up to you to quote spaces and escape special characters.

With args, cmd is called directly and args is passed in via OS facilities (so you don't need to provide quoting or escaping).

`system.sync(cmd[, args]) → status

As with system, synchronous and just returns the status.

Origins

This is intended to provide the same functionality as the Perl system function.

In contrast with Perl's system call, this does not currently encode the signal that killed the process in the return value.