Adding an element to a bash array with a variable Post: 302937960

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getsubopt

getsubopt(3)						     Library Functions Manual						      getsubopt(3)

NAME

       getsubopt - Parses suboption arguments from a command line

LIBRARY

       Standard C Library (libc.so, libc.a)

SYNOPSIS

       #include <stdlib.h>

       int getsubopt(
	       char **optionp,
	       char *tokens[],
	       char **valuep);

STANDARDS

       Interfaces documented on this reference page conform to industry standards as follows:

       getsubopt():  XPG4-UNIX

       Refer to the standards(5) reference page for more information about industry standards and associated tags.

PARAMETERS

       Specifies  the  address	of  a  pointer to the option string.  Specifies an array of possible suboption tokens.	Specifies the address of a
       value string pointer.

DESCRIPTION

       The getsubopt() function parses suboption arguments in a flag argument that was initially parsed by the getopt() function.  These suboption
       arguments  must be separated by commas and may consist of either a single token, or a token-value pair separated by an equal sign.  Because
       commas delimit suboption arguments in the option string, commas are not allowed to be part of the suboption arguments or  the  value  of  a
       suboption argument.  Similarly, because the equal sign separates a token from its value, a token must not contain an equal sign.

       The  following  command	line  for the mount command gives an example of this syntax: mount -o ro,nosuid,rsize=8192 paradox:/u2 /u2 In this
       example, the suboption consists of three arguments: ro and nosuid (tokens), and rsize=8192 (a token-value pair).

       When a suboption argument is found in the *optionp string that matches a string in the token array, the index of the matching string in the
       array  is  returned.   If  no  match  is  found, then a -1 is returned.	After each match, the *optionp string is updated to point past the
       matched suboption argument to the next suboption argument in the list.  If the suboption argument  matched  is  the  last  in  the  string,
       *optionp  is  set to the null pointer.  If the suboption argument matched is a token-value pair, then *valuep is set to point to the value.
       If there is no value, then *valuep is to the null pointer.

       The token array is a list of pointers to strings.  The end of the array is signified by a NULL pointer.

RETURN VALUES

       Upon successful completion, the getsubopt() function returns the index of the token or suboption argument that matches the suboption  argu-
       ment in the input string.  Otherwise, if no match is found, it returns a value of -1.

ERRORS

       No errors are defined for this routine.

RELATED INFORMATION

       Functions: getopt(3)

       Standards: standards(5) delim off

																      getsubopt(3)

10 More Discussions You Might Find Interesting

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Discussion started by: Shoeless_Mike

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Discussion started by: npatwardhan

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How to assign an array element to a variable

Discussion started by: kaushik_87