run "ls" through NSTask in a Cocoa app not working -

i testing use of nstask because want try run bunch of commands within cocoa application written in swift run in terminal.

in viewdidload have following code:

    let task = nstask()     let pipe = nspipe()     task.standardoutput = pipe      task.launchpath = "/usr/bash"     task.currentdirectorypath = dir     task.arguments = ["ls"]      let file:nsfilehandle = pipe.filehandleforreading      task.launch()     task.waituntilexit()      let data =  file.readdatatoendoffile()     let datastring = nsstring(data: data, encoding: nsutf8stringencoding)     print("datastring = \(datastring)") 

the app runs getting following error:

failed set (contentviewcontroller) user defined inspected property on (nswindow): launch path not accessible

can me understand doing wrong? trying run ls command , store result array of strings...

thanks

well, starters, /usr/bash not path bash executable. want /bin/bash.

next, not work invoke /bin/bash ls, equivalent of you're doing. @ shell, if want give command bash process , execute, /bin/bash -c ls. so, want set tasks's arguments ["-c", "ls"].

however, why involving shell interpreter here, @ all? why not set task's launchpath "/bin/ls" , run ls command directly? either leave arguments unset, if want list current working directory's contents, or set arguments pass ls, such options or path (e.g. ["-l", "/applications"]).