Kills all processes managed by runningboardd (works on macOS / iOS)

cleartheboard.m

// cc -o cleartheboard src/main.m -framework Foundation -F /System/Library/PrivateFrameworks/ -framework RunningBoardServices
// sign with com.apple.runningboard.terminatemanagedprocesses

#import <Foundation/Foundation.h>

@interface RBSTerminateRequest : NSObject
- (instancetype)initForAllManagedWithReason:(NSString *)reason;
- (BOOL)execute:(NSError **)error;
@end

int main(int argc, const char *argv[]) {
    @autoreleasepool {
        RBSTerminateRequest *request = [[RBSTerminateRequest alloc] initForAllManagedWithReason:@"clear the board"];
        NSError *error = nil;
        BOOL success = [request execute:&error];
    }
    return 0;
}