linux 中解析命令行参数 （getopt_long用法）

#include <stdio.h>
#include <getopt.h>
char  *l_opt_arg;
char *  const  short_options =  "nbl:" ;
struct  option long_options[] = {
     { "name" ,     0,   NULL,     'n'      },
     { "bf_name" ,  0,   NULL,     'b'      },
     { "love" ,     1,   NULL,     'l'      },
     {      0,     0,     0,     0},
};
int  main( int  argc,  char  *argv[])
{
     int  c;
     while ((c = getopt_long (argc, argv, short_options, long_options, NULL)) != -1)
     {
         switch  (c)
         {
         case   'n' :
             printf("My name is XL./n" );
             break ;
         case   'b' :
             printf("His name is ST./n" );
             break ;
         case   'l' :
             l_opt_arg = optarg;
             printf("Our love is %s!/n" , l_opt_arg);
             break ;
         }
     }
     return  0;
}

 

 

 

[root@localhost liuxltest]# gcc -o getopt getopt.c

[root@localhost liuxltest]# ./getopt -n -b -l forever
My name is XL.
His name is ST.
Our love is forever!
[root@localhost liuxltest]#

[root@localhost liuxltest]# ./getopt -nb -l forever
My name is XL.
His name is ST.
Our love is forever!
[root@localhost liuxltest]# ./getopt -nbl forever 
My name is XL.
His name is ST.
Our love is forever!