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!