[英]How to clear directory contents in c++ on Linux (basically, i want to do 'rm -rf <directorypath>/*'
I am writing a c++ program on Linux (Ubuntu). 我正在Linux上编写一个c ++程序(Ubuntu)。 I would like to delete the contents of a directory.
我想删除目录的内容。 It can be loose files or sub-directories.
它可以是松散的文件或子目录。
Essentially, i would like to do something equivalent to 基本上,我想做一些相当于的事情
rm -rf <path-to-directory>/*
Can you suggest the best way of doing this in c++ along with the required headers. 你能否在c ++中建议最好的方法以及所需的标题。 Is it possible to do this with sys/stat.h or sys/types.h or sys/dir.h ?!
是否可以使用sys / stat.h或sys / types.h或sys / dir.h执行此操作?
Use the nftw()
(File Tree Walk) function, with the FTW_DEPTH
flag. 使用带有
FTW_DEPTH
标志的nftw()
(文件树步行)功能。 Provide a callback that just calls remove()
on the passed file: 提供一个只调用传递文件上的
remove()
的回调:
#define _XOPEN_SOURCE 500
#include <stdio.h>
#include <ftw.h>
#include <unistd.h>
int unlink_cb(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf)
{
int rv = remove(fpath);
if (rv)
perror(fpath);
return rv;
}
int rmrf(char *path)
{
return nftw(path, unlink_cb, 64, FTW_DEPTH | FTW_PHYS);
}
If you don't want to remove the base directory itself, change the unlink_cb()
function to check the level: 如果您不想删除基本目录本身,请更改
unlink_cb()
函数以检查级别:
int unlink_cb(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf)
{
int rv;
if (ftwbuf->level == 0)
return 0;
rv = remove(fpath);
if (rv)
perror(fpath);
return rv;
}
system ("rm -rf <path-to-directory>");
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