文章只是个人笔记，不作指导，错误敬请指正

方式一. 调用自建Shell脚本指定APP打开文件

- (IBAction)useShell:(id)sender
{
    //[self invokingShellScriptAtPath:@"/Users/victor/Desktop/ShellStudy/OpenFile.sh" ];

    NSArray *paths = [NSArray arrayWithObjects:@"/Users/victor/Pictures/ad.txt",
                      @"/Users/victor/Pictures/asdfasd.txt",nil];
    NSString *appPath = @"/Applications/Google Chrome.app";

    NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithCapacity:0];
    [dic setValue:paths forKey:kOpenFileWithFilePathArray];
    [dic setValue:appPath forKey:kOpenFileWithApplictionPath];
    [self excuteShellWithParams:dic shellScriptPath:@"/Users/victor/Desktop/ShellStudy/OpenFile.sh"];
}

-(id)excuteShellWithParams:(NSDictionary*)dic shellScriptPath:(NSString*)shellScriptPath
{
    NSString *applicationPath = [dic valueForKey:kOpenFileWithApplictionPath];
    NSArray *filePaths = [dic valueForKey:kOpenFileWithFilePathArray];

    NSTask *task = [[NSTask alloc] init];
    task.launchPath = @"/bin/sh";


    NSMutableArray *arguments = [NSMutableArray arrayWithCapacity:0];
    [arguments addObject:shellScriptPath];

    if (applicationPath && applicationPath.length > 0)
    {
        [arguments addObject:@"-a"];
        [arguments addObject:applicationPath];
    }
    if (filePaths && filePaths.count > 0)
    {
        for (NSString *path in filePaths)
        {
            [arguments addObject: path];
        }
    }

    task.arguments = [NSArray arrayWithArray:arguments];
    task.currentDirectoryPath = [[NSBundle  mainBundle] resourcePath];

    NSPipe *outputPipe = [NSPipe pipe];
    [task setStandardOutput:outputPipe];
    [task setStandardError:outputPipe];
    NSFileHandle *readHandle = [outputPipe fileHandleForReading];

    [task launch];
    [task waitUntilExit];

    NSData *outputData = [readHandle readDataToEndOfFile];
    NSString *outputString = [[NSString alloc] initWithData:outputData encoding:NSUTF8StringEncoding];
    NSLog(@"Victor-Debug : \n%@",outputString);
    return outputString;

}

NSTask 调用执行shell脚本提示没有权限 Operation not permitted ，是因为沙盒机制

macOS-Cocoa开发之沙盒机制及访问Sandbox之外的文件

shell脚本：
OpenFile.sh

#!/bin/sh

printHelpDoc()
{
    printf "Usage: ./OpenFile.sh [-a <application>] [filenames] [--args arguments]\n"
    printf "Help: Open opens files from a shell.\n\tBy default, opens each file using the default application for that file. \n\tIf the file is in the form of a URL, the file will be opened as a URL.\n"
    printf "Options:\n"
    printf "\t-a      Opens with the specified application.\n\n\n"
}


#params count
paramCount=$#
printf "paramCount=$paramCount\n"

#是否包含第1个参数
if [ -z "$1" ]; then
    printf "Please enter the valid arguments\n"
    #printHelpDoc
    exit 1
elif  test $1 = "-a" 
 then
    if [ -z "$2" ]; then
        printf "Please enter the valid arguments\n"
        exit 1
    fi
fi


for (( i = 1; i <= paramCount; i++ )); do
    #statements
    params[i-1]="${!i}"
    echo ${params[i-1]}
done

firstArg="${params[0]}"
secondArg="${params[1]}"
index=0
if test $firstArg = "-a" ; then
    let index=2
fi

if [ $index -eq $paramCount ]; then
    printf "open $firstArg $secondArg\n"
    open "$firstArg" "$secondArg"
    else
        for (( i = index; i < paramCount; i++ )); do
              #statements
              arg="${params[i]}"
              if test $firstArg = "-a" ; then
                  printf "$i open $firstArg $secondArg $arg\n"
                  open "$firstArg" "$secondArg" "$arg"
              else
                  open "$arg"
              fi
         done
fi

方式二: Core Service

//applyToAll 将改程序设置为 该文件类型的默认打开程序
+ (void)openItems:(NSArray <NSString *> *)itemsFullPaths withApplicationPath:(NSString *)applicationPath
             open:(BOOL)openWith applyToAll:(BOOL)applyToAll
{

    if (!applicationPath)
    {
        NSURL* defaultAppURL = nil;
        [OpenFileWithApplication applicationsSetForItems: itemsFullPaths defaultURL: &defaultAppURL];
        applicationPath = [defaultAppURL path];
    }

    if (!applicationPath)// no application found. Thus do nothing
    {
        return;
    }

    NSMutableArray* itemsArray = [NSMutableArray arrayWithCapacity:0];
    LSLaunchURLSpec launchSpec = {0};
    launchSpec.appURL = (__bridge CFURLRef)[NSURL fileURLWithPath: applicationPath isDirectory:YES];
    launchSpec.itemURLs = (__bridge CFArrayRef)itemsArray;
    launchSpec.launchFlags = kLSLaunchDefaults;

    for(NSString* fullPath in itemsFullPaths)
    {
        NSURL* itemURL = [NSURL fileURLWithPath: fullPath];

        [itemsArray addObject:itemURL];

        if (applyToAll)
        {
            NSBundle* appBundle = [NSBundle bundleWithPath: applicationPath];
            NSString* contentType = nil;
            NSError* err = nil;
            [itemURL getResourceValue:&contentType forKey:NSURLTypeIdentifierKey error:&err];

            if (nil == err)
            {
                OSStatus status = LSSetDefaultRoleHandlerForContentType ((__bridge CFStringRef)contentType,kLSRolesAll,(__bridge CFStringRef)[appBundle bundleIdentifier]);
                if ( noErr != status)
                {
                    NSLog(@"LSSetDefaultRoleHandlerForContentType ERROR: %d", status);
                }

            }
        }
    }

    OSStatus status = noErr;
    if (openWith && [itemsArray count])
    {
        status = LSOpenFromURLSpec(&launchSpec,NULL);
        if ( noErr != status)
        {
            NSLog(@"LSOpenFromURLSpec ERROR: %d", status);
        }
    }

    //assert(status==noErr);
}