Idle number of seconds.

idle-seconds.m

/**
 * Prints out the number of seconds since the last user input.
 *
 * gcc -framework Cocoa -o idle-seconds idle-seconds.m
 */

#import <Foundation/Foundation.h>

extern double CGSSecondsSinceLastInputEvent(unsigned long eventType);

int main (int argc, const char* argv[]) {
    int idleTimeInSeconds = (int) CGSSecondsSinceLastInputEvent(-1);
    printf("%d\n", idleTimeInSeconds);
    return 0;
}