execlp

#include <stdio.h>
#include <unistd.h>

int main(int argc, char * argv[])
{
    int i;

    if(argc <= 1)
    {
        printf("no program need to execute!\n");
        return -1;
    }
    for(i=1;i<argc;i++)
    {
        if(0 == fork())
        {
            printf("executing %s.......\n", argv[i]);
            execlp(argv[i], argv[i], (char *)NULL);
        }
    }
    return 0;
}

运行结果：
lisong@lisong:~/code/experiment/proc/exec$ ./callexec
no program need to execute!
lisong@lisong:~/code/experiment/proc/exec$ ./callexec /usr/share/touchpad-indicator/touchpad-indicator.py
executing /usr/share/touchpad-indicator/touchpad-indicator.py.......
lisong@lisong:~/code/experiment/proc/exec$ ps
  PID TTY          TIME CMD
 1552 pts/0    00:00:01 bash
 2138 pts/0    00:00:00 touchpad-indica
 2155 pts/0    00:00:00 python
 2205 pts/0    00:00:00 ps
lisong@lisong:~/code/experiment/proc/exec$ kill -9 2155
lisong@lisong:~/code/experiment/proc/exec$ ps
  PID TTY          TIME CMD
 1552 pts/0    00:00:01 bash
 2208 pts/0    00:00:00 ps
lisong@lisong:~/code/experiment/proc/exec$ ./callexec /usr/share/touchpad-indicator/touchpad-indicator.py /home/lisong/下载/linuxqq_v1.0.2_i386/qq
executing /home/lisong/下载/linuxqq_v1.0.2_i386/qq.......
executing /usr/share/touchpad-indicator/touchpad-indicator.py.......
lisong@lisong:~/code/experiment/proc/exec$ [22:06:22][TLOG][warn]res_db: error message-> no such table: res_db_file

(qq:2211): GdkPixbuf-CRITICAL **: gdk_pixbuf_add_alpha: assertion `GDK_IS_PIXBUF (pixbuf)' failed

(qq:2211): GdkPixbuf-CRITICAL **: gdk_pixbuf_copy_area: assertion `src_pixbuf != NULL' failed

第三次执行两个应用程序时 touchpad和 qq确实执行了，只可惜 ubuntu 中qq似乎不能从shell执行 ，因此打印一堆错误而自动结束。./callexec