Hi
I remember here is some C function which can excute shell command and return the result string .
If I give a string call "ifconfig" , the result string will contain network IP information .
Do you know this C function name ? Thank you very much .
How to excute shell command and return result string ?
Mar 11, 2009
2 Replies
Try "execve". BTW why are you executing a "ifconfig" while you can access the functionality via standard networking APIs?
system(3) is the high level version that runs the command via a shell for full shell redirection, etc. That sets up the pipes (file redirection) that the exec(2) family won't: you'd have to dup() stdout before exec() to get the output.
Agreed, use the direct functions when possible (no need for fork/exec other processes just to get the parameters, works faster too), but is more work for the programmer.
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