getopt

If I have a command line like: my_script.pl -foo -WHATEVER My script knows about --foo , and I want Getopt to set variable $opt_foo , but I don't know anything about -WHATEVER . How can I tell Getopt to parse out the options that I've told it about, and then get the rest of the arguments in a string variable or a list? An example: use strict; use warnings; use Getopt::Long; my $foo; GetOptions('foo' => \$foo); print 'remaining options: ', @ARGV; Then, issuing perl getopttest.pl -foo -WHATEVER gives Unknown option: whatever remaining options: You need to configure "pass_through" option via

Hi I am writing a simple client-server program. In this program I have to use getopt() to get the port number and ip address like this: server -i 127.0.0.1 -p 10001 I do not know how can I get values from optarg, to use later in the program. Kornel Kisielewicz How about like this: char buf[BUFSIZE+1]; snprintf(buf,BUFSIZE,"%s",optarg); Or in a more complete example: #include <stdio.h> #include <unistd.h> #define BUFSIZE 16 int main( int argc, char **argv ) { char c; char port[BUFSIZE+1]; char addr[BUFSIZE+1]; while(( c = getopt( argc, argv, "i:p:" )) != -1 ) switch ( c ) { case 'i': snprintf(

This question already has an answer here: Using getopts to process long and short command line options 32 answers I want to support both short and long options in bash scripts, so one can: $ foo -ax --long-key val -b -y SOME FILE NAMES is it possible? Brian Clements getopt supports long options. http://man7.org/linux/man-pages/man1/getopt.1.html Here is an example using your arguments: #!/bin/bash OPTS=`getopt -o axby -l long-key: -- "$@"` if [ $? != 0 ] then exit 1 fi eval set -- "$OPTS" while true ; do case "$1" in -a) echo "Got a"; shift;; -b) echo "Got b"; shift;; -x) echo "Got x"; shift;;

I've read a getopt() example but it doesn't show how to accept integers as argument options, like cvalue would be in the code from the example: #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> int main (int argc, char **argv) { int aflag = 0; int bflag = 0; char *cvalue = NULL; int index; int c; opterr = 0; while ((c = getopt (argc, argv, "abc:")) != -1) switch (c) { case 'a': aflag = 1; break; case 'b': bflag = 1; break; case 'c': cvalue = optarg; break; case '?': if (optopt == 'c') fprintf (stderr, "Option -%c requires an argument.\n", optopt); else if (isprint

I'm looking for a getopt library for c#. So far I found a few ( phpguru , XGetOptCS , getoptfordotnet ) but these look more like unfinished attempts that only support a part of C's getopt. Is there a full getopt c# implementation? Here is a .NET Implementation of getopt: http://www.codeplex.com/getopt Miguel de Icaza raves about Mono.Options . You can use the nuget package , or just copy the single C# source file into your project. For posterity: CommandParser is another one with a BSD license leppie Here is something I wrote, it works rather nice, and has quite a lot of features for the tiny

I have a program which takes various command line arguments. For the sake of simplification, we will say it takes 3 flags, -a , -b , and -c , and use the following code to parse my arguments: int c; while((c = getopt(argc, argv, ":a:b:c")) != EOF) { switch (c) { case 'a': cout << optarg << endl; break; case 'b': cout << optarg << endl; break; case ':': cerr << "Missing option." << endl; exit(1); break; } } note: a, and b take parameters after the flag. But I run into an issue if I invoke my program say with ./myprog -a -b parameterForB where I forgot parameterForA, the parameterForA

在linux中，经常需要各种命令，通常情况下都会带各种参数，而这些参数是如何解析的呢？ 通常使用GNU C提供的函数getopt、getopt_long、getopt_long_only函数来解析命令行参数。 使用他们需要引用头文件getopt.h。 原文地址: https://www.cnblogs.com/NickQ/p/11368656.html 1. getopt()函数 getopt()用来解析命令行选项参数的，但是只能解析短选项: -d 100,不能解析长选项：--prefix;其原型： int getopt(int argc, char * const argv[],const char *optstring); argc和argv和main函数的两个参数一致，分别表示命令行参数个数和保存参数的字符串数组； optstring，是短选项的规则声明，形式如 "a:b::cd:" ，分别表示程序支持的命令行短选项有-a、-b、-c、-d，冒号含义如下： 只有一个字符，不带冒号——只表示选项， 如-c 2. 一个字符，后接一个冒号——表示选项后面带一个参数，如-a 100 或 -a100 3. 一个字符，后接两个冒号——表示选项后面带一个可选参数，即参数可有可无，如果带参数，则选项与参数直接不能有空格形式,应该型如-b200 这里就能解释为什么有时候带参数需要空格