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')
which('node', function (er, resolvedPath) {
})
var resolved = which.sync('node')
resolved = which.sync('node', {nothrow: true})
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.