无法从NSTask调用Salesforce DX

Question

从终端，我可以调用所有Salesforce DX CLI命令和功能。例如，＆＃34; sfdx force：doc：commands：list＆＃34;将显示所有命令。但是从Mac上的NSTask代码（下面），我根本无法调用Salesforce DX CLI。 terminationStatus标志为true。其他命令如＆＃34; ls＆＃34;工作得很好。这是因为路径吗？权限？提前谢谢......

ptr portcommandlineinterface(char *thecommand)
{
    ptr theptr;
    NSTask *task;
    NSPipe *pipe;
    NSData *data;
    NSFileHandle *file;
    NSArray *arguments;
    int thesize, status;
    const char *junkptr;
    NSString *string, *tempstring;

    tempstring = [NSString stringWithUTF8String:thecommand];
    if (tempstring == 0) return(0);
    task = [[NSTask alloc] init];
    [task setLaunchPath: @"/bin/sh"];
    [task setCurrentDirectoryPath: @"~"];
    arguments = [NSArray arrayWithObjects: @"-c", tempstring, nil];
    [task setArguments: arguments];
    pipe = [NSPipe pipe];
    [task setStandardOutput: pipe];
    file = [pipe fileHandleForReading];
    [task launch];
    [task waitUntilExit];
    status = [task terminationStatus];
    if (status) return(0);
    data = [file readDataToEndOfFile];
    string = [[NSString alloc] initWithData: data encoding:NSUTF8StringEncoding];
    junkptr = [string UTF8String];
    thesize = cstrlen((char *)junkptr);
    theptr = portnewptr(thesize + 10);
    cstrcpy((char *)junkptr, theptr);
    return(theptr);
}