如何抑制输出:: system（“del * .log”）出现在控制台中

Question

I am executing ::system("del *.log") in a win32 exe The above code prints the output to exe console. How can i suppress the output being printed to console?

Answer 1

Use redirection and redirect stdout to the nul file:

::system("del *.log > nul")

"nul" is a hidden file present in all directories, and all it does is discard everything written to it.

This will still show errors (if there are any). If you also want to suppress stderr, then:

::system("del *.log > nul 2>&1")

More info: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/redirection.mspx?mfr=true

Answer 2

On Windows, you should use SHFileOperation() instead. There are variable flags available, such as FOF_NO_UI , for suppressing visual output to the user. For example:

SHFILEOPSTRUCT FileOp = {0};
FileOp.wFunc = FO_DELETE;
FileOp.pFrom = "*.log\0";
FileOp.fFlags = FOF_FILESONLY | FOF_NO_UI;
SHFileOperation(&FileOp);

Answer 3

尝试这个：

::system("del *.log > nul")