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 optionlong_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("MynameisXL.\n" );
 break ;
 case  'b' :
 printf("HisnameisST.\n" );
 break ;
 case  'l' :
 l_opt_arg=optarg;
 printf("Ourloveis%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!