linux 中解析命令行参数 （getopt_long用法）

1. #include<stdio.h>
2. #include<getopt.h>
3. char *l_opt_arg;
4. char * const short_options= "nbl:" ;
5. struct optionlong_options[]={
6. {"name" ,0,NULL, 'n' },
7. {"bf_name" ,0,NULL, 'b' },
8. {"love" ,1,NULL, 'l' },
9. {0,0,0,0},
10. };
11. int main( int argc, char *argv[])
12. {
13. int c;
14. while ((c=getopt_long(argc,argv,short_options,long_options,NULL))!=-1)
15. {
16. switch (c)
17. {
18. case 'n' :
19. printf("MynameisXL.\n" );
20. break ;
21. case 'b' :
22. printf("HisnameisST.\n" );
23. break ;
24. case 'l' :
25. l_opt_arg=optarg;
26. printf("Ourloveis%s!\n" ,l_opt_arg);
27. break ;
28. }
29. }
30. return 0;
31. }
    

[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!