On 03/16/2011 06:43 AM, xinyou yan wrote:
Yes it is a function defined in the program.
I will show something like a shell.
It wait user to do what they want to . . What they can do , come from
the function I define?
execlp(3) is a Linux library function that can be called
only from an
executable program. The shells use this internally. The same
functionality is available from the Linux command line or from any shell:
foo arg1 arg2 .....
Normally in a C program you would fork(2) then exec. Effectively this
creates a subshell and executes the command in that shell.
You can use the bash exec function to redirect input and/or output.
--
Jerry Feldman <gaf(a)blu.org>
Boston Linux and Unix
PGP key id: 537C5846
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