main.m

#import <Foundation/Foundation.h>

int main(int argc, const char **argv) {
    @autoreleasepool {
        NSFileManager *fm = [[NSFileManager alloc] init];
        NSURL *url = [NSURL fileURLWithPath:@"/Users/saiko/Library/Mobile Documents/com~apple~CloudDocs/Userscripts"];
        NSError *error = nil;
        NSArray<NSURL *> *arr = [fm contentsOfDirectoryAtURL:url
                                  includingPropertiesForKeys:@[]
                                                     options:0
                                                       error:&error];
        
        if (error) {
            NSLog(@"error: %@", error);
            return 0;
        }
        
        for (NSURL *el in arr) {
            NSLog(@"%@", el);
            NSError *error = nil;
            
            NSString *content = [NSString stringWithContentsOfURL:el
                                                         encoding:NSUTF8StringEncoding
                                                            error:&error];
            if (error) {
                NSLog(@"error: %@", error);
                continue;
            }
            
            NSLog(@"%@", content);
        }
    }
    
    return 0;
}