Thera are two way under UNIX / LINUX to execute
1) doing all code yourself using the fork() systemcall and the the
NAME
execl, execlp, execle, execv, execvp - execute a file
SYNOPSIS
#include <unistd.h>
extern char **environ;
int execl( const char *path, const char *arg, ...);
int execlp( const char *file, const char *arg, ...);
int execle( const char *path, const char *arg , ..., char
* const envp[]);
int execv( const char *path, char *const argv[]);
int execvp( const char *file, char *const argv[]);
see documation
2) using the system call this does fork() and exec stuff in one call
SYSTEM(3) Linux Programmer's Manual SYSTEM(3)
NAME
system - execute a shell command
SYNOPSIS
#include <stdlib.h>
int system (const char * string);
DESCRIPTION
system() executes a command specified in string by calling
/bin/sh -c string, and returns after the command has been
completed. During execution of the command, SIGCHLD will
be blocked, and SIGINT and SIGQUIT will be ignored.
RETURN VALUE
The value returned is 127 if the execve() call for /bin/sh
fails, -1 if there was another error and the return code
of the command otherwise.
you can end the string with & so the call is asyncron your task and the
new will
both run othrwise the calling task waits until the second has finished,
no windows
refresch mouse movement is done, no very nice in X.
somtimes you have to allow your task to use your display so you have to
use
xhost + see xhost manual
Best Regards
Günther
satyajit parekh wrote:
i need help desperately with the following problem
i have a executable binary file which can be executed from command
line with a few command line arguments
it executes perfectly from command line
i created a interface using glade to obtain the values of these
parameters from the application user. on clicking a button OK the
values entered in the interface are passed to and stored as some
variables.
i need to execute the binary file with these arguments
from within the interface itself
i tried using
exec ("file-path-name", "arg1, arg2,..") in callbacks.c
it doesnt execute
can i use exec in this case? or is it some other func/syscall?
if yes which file do i add the "exec"command to ? is it main.c or is
it callbacks.c or someother file
please help
waiting for ur quick replies
thanx
sap
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