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Old 06-02-2005, 10:48 AM   #1
sebythomas
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Question calling another program alongwith arguments using execl not working


Hi,
Been at the problem for 2 long with no solution.Problem description : I have a core program written in GNU C having arguments where wild characters(-f file.*) is passed; the program uses getopt option to assess the arguments. This program is required to be called by a front end graphic interface built using libglade. I tried using execl and it's variants ; I have gone thru relevent man pages ; passing arguments and calling the program works with all other arguments except the ones where wild characters are used; Pl help
 
Old 06-02-2005, 12:37 PM   #2
Hko
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Re: calling another program alongwith arguments using execl not working

Quote:
Originally posted by sebythomas
passing arguments and calling the program works with all other arguments except the ones where wild characters are used
That's correct. Wildcards are processed by a shell, and exec..()-functions do not run the command inside a shell. This would be a chicken-egg problem, as shells themselves are written in C and need exec..() to run other processes....

Simplest solution:
Use system() instead of one of the exec..()-functions. System() does run the program inside a shell.

If you cannot use system(), because its functionality is too limited for you purpose, check out these functions (ordered from most sophisticated, to most basic):

man 3 wordexp
man 3 glob
man 3 scandir + man 3 fnmatch
man 3 opendir + man 3 readdir + man 3 fnmatch

Hope this helps.

Last edited by Hko; 06-02-2005 at 12:45 PM.
 
  


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