Self relaunch of Cocoa application

NSApplication+SelfRelaunch.m

@implementation NSApplication (Relaunch)

- (void)relaunchAfterDelay:(float)seconds
{
	NSTask *task = [[[NSTask alloc] init] autorelease];
	NSMutableArray *args = [NSMutableArray array];
	[args addObject:@"-c"];
	[args addObject:[NSString stringWithFormat:@"sleep %f; open \"%@\"", seconds, [[NSBundle mainBundle] bundlePath]]];
	[task setLaunchPath:@"/bin/sh"];
	[task setArguments:args];
	[task launch];
	
	[self terminate:nil];
}

@end

Swift 4 version: https://gist.github.com/BenLeggiero/449fb9b1a45b69fb276f4f9ad86cab7a