module.exports = isexe; 
isexe.sync = sync; 
var fs = require('fs'); 
function isexe(path, options, cb){ 
fs.stat(path, function (er, stat){ 
cb(er, er? false : checkStat(stat, options)); 
} 
); 
} 
function sync(path, options){ 
return checkStat(fs.statSync(path), options); 
} 
function checkStat(stat, options){ 
return stat.isFile() && checkMode(stat, options); 
} 
function checkMode(stat, options){ 
var mod = stat.mode; 
var uid = stat.uid; 
var gid = stat.gid; 
var myUid = options.uid !== undefined? options.uid: process.getuid && process.getuid(); 
var myGid = options.gid !== undefined? options.gid: process.getgid && process.getgid(); 
var u = parseInt('100', 8); 
var g = parseInt('010', 8); 
var o = parseInt('001', 8); 
var ug = u | g; 
var ret = (mod & o) || (mod & g) && gid === myGid || (mod & u) && uid === myUid || (mod & ug) && myUid === 0; 
return ret; 
}