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    which
    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/which package

    2.0.2 • Public • Published

    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
    })
     
    // or promise
    which('node').then(resolvedPath => { ... }).catch(er => { ... not found ... })
     
    // sync usage
    // throws if not found
    var resolved = which.sync('node')
     
    // if nothrow option is used, returns null if not found
    resolved = which.sync('node', {nothrow: true})
     
    // 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.

    Keywords

    none

    Install

    npm i which

    DownloadsWeekly Downloads

    39,062,967

    Version

    2.0.2

    License

    ISC

    Unpacked Size

    9.97 kB

    Total Files

    6

    Last publish

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