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Florian Dold d1291f6755 node_modules		2016-11-03 01:33:53 +01:00
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README.md	add node_modules to address #4364	2016-10-10 03:43:44 +02:00
which.js	add node_modules to address #4364	2016-10-10 03:43:44 +02:00

README.md

which

Like the unix which utility.

Finds the first instance of a specified executable in the PATH environment variable. Does not cache the results, so hash -r is not needed when the PATH changes.

USAGE

var which = require('which')

// async usage
which('node', function (er, resolvedPath) {
  // er is returned if no "node" is found on the PATH
  // if it is found, then the absolute path to the exec is returned
})

// sync usage
// throws if not found
var resolved = which.sync('node')

// Pass options to override the PATH and PATHEXT environment vars.
which('node', { path: someOtherPath }, function (er, resolved) {
  if (er)
    throw er
  console.log('found at %j', resolved)
})

CLI USAGE

Same as the BSD which(1) binary.

usage: which [-as] program ...

OPTIONS

You may pass an options object as the second argument.

path: Use instead of the PATH environment variable.
pathExt: Use instead of the PATHEXT environment variable.
all: Return all matches, instead of just the first one. Note that this means the function returns an array of strings instead of a single string.