R. Brock Lynn wrote:
>
> How do I effectively use getopt?
>
> BUGS
> This manpage is confusing.
Do as in the example written in the manpage. It explains the usage much
better than any words (if you ignore the _long parts).
If you rather read words, read the info page (getopt is documented in
glibc info pages), but I find that reading code is much easier..
Basic idea:
You call getopt() to find out the next option on the command line.
getopt() returns EOF when there is no more options.
Any option argument is returned in char *optarg.
The syntax for the options-string sent to getopt() is
<char> A "toggle" (no argument)
<char>: Argument required
<char>:: Argument allowed but not required (optarg NULL if no argument)
Example:
"ab:c::"
accepts
-a # no argument
-b something # requires a argument
-c [something] # argument not required
---
Henrik Nordström
