How to run NSTask with multiple commands

Question

I\'m trying to make a NSTask running a command like this:

ps -clx | grep \'Finder\' | awk \'{print $2}\'

Here is my method

Answer 1

The following code works for me.

NSTask *task1 = [[NSTask alloc] init];
NSPipe *pipe1 = [NSPipe pipe];
[task1 waitUntilExit];
[task1 setLaunchPath: @"/bin/sh"];
[task1 setArguments: [NSArray arrayWithObjects: @"-c",@"ps -A |grep -m1 Finder | awk '{print $1}'", nil]];
[task1 setStandardOutput: pipe1];
[task1 launch];

NSFileHandle *file = [pipe1 fileHandleForReading];
NSData * data = [file readDataToEndOfFile];

NSString * string;
string = [[NSString alloc] initWithData: data encoding: NSUTF8StringEncoding];
NSLog(@"Result: %@", string);