objective c - Running external programs in a sandboxed app -


How do I create an app to show all users logged in to the computer using the w command in the terminal?

I have made a beta app but it is disabling sandboxing [it shows to users] but it is not working with sandboxing [this is the case that there are no user login] code : 

  NSTask * task = [NSTask new]; [Task set lockpath: @ "/ usr / bin / w"]; NSPipe * Output = [NSPipe pipe]; [Work setstandard input: [nspipe pipe]]; [Set output standard output: output]; [Launch the task]; NSFileHandle * Read = [Output filehousingFororing]; NSDTA * Datard = [ReadTataOfFile]; NSString * Result = [[NSString alloc] initWithData: data read encoding: NSUTF8StringEncoding]; [TV view set string: result];    
 
 
 The utility to be used ( w >) Trying to access a file that is outside the sandbox. In essence, this will not work when launched from the sandboxed application.

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