In Linux, many programs, even those with graphical user interfaces (guis), can accept and process command line options. For some programs, this is the main means to interact with other programs or users. With a reliable and complex command line
Reprinted -- Use of the getopt Function The author writes well.Every day you are using a large number of command line programs. Do you feel that the command line parameters are easy to use? They are all implemented using getopt.Using getopt to write
How to Use the getopt () function to parse parameters?
In the process of writing a program recently, part of the time is spent on Processing Parameters by the program. I heard from students about the getopt function today and found that c has a
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Getopt is used to parse command line option parameters. You don't have to write your own stuff to process argv.
# Include Extern char * optarg; // parameter pointer of the optionExtern int optind, //
A very important step in the programming of using getopt to parse command line parameters (c) CLI (command line interface) is the parsing of command line parameters. For the first brothers involved in this section, argv and argc are still very
From: http://blog.csdn.net/mr_jj_lian/article/details/6835137
Command Line Parameter Parsing function -- getopt ()The getopt () function declaration is as follows:
# Include Int getopt (INT argc, char * const argv [], const char * optstring
Related function header file #include Defining Functions int getopt (int argc,char * CONST argv[],const char * optstring);Function descriptionThe argc and argv parameters of the function are usually passed directly from the parameters of Main ().
Getopt-The optional "description" of the parse command getopt is just a simple parse command option that can only be parsed in a simple format, with the following format: 1, form: cmd [-a][-b]//parsing of short options, 2, Shape: cmd [-A a_argument ]
Transferred from: https://www.cnblogs.com/qingergege/p/5914218.htmlRecently in the Linux C programming, undergraduate time did not study well, hope to learn younger brothers learn lesson.Well, it's a bit verbose, but it's really a piece of advice.
In the morning when looking at the source project Webbench, just at the beginning was a seemingly strange function getopt_long () to get stuck, to tell the truth this function has not seen, naturally do not know what this buddy is doing. So Baidu,
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