f***c
发帖数: 281 | 1 【 以下文字转载自 Programming 讨论区 】
【 原文由 funsc 所发表 】
ok
the code is as follows:
while(1)
{
getcommand(args); //the function is to get a command line and works corrently
pid = fork();
if (pid == 0)
{
fd = freopen("a.txt", "w", stdout);
execvp(args[0], args);
}
else
{
waitpid(pid);
}
}
after i run ls -l > foo, the output has been written to a.txt, as i hoped,
but when i run ls again, the result does not show on screen.
it seems that after i redirect the stdout to the file " |
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