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node/deps/npm/node_modules/which
Rebecca Turner c54d057598
deps: upgrade to npm 2.10.1 		10 years ago
..
bin Update npm to 1.1.8 13 years ago
node_modules/is-absolute deps: upgrade to npm 2.10.1 10 years ago
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LICENSE npm: upgrade to v2.1.18 10 years ago
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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)
})

OPTIONS

If you pass in options, then path and pathExt are relevant.