How do you guys typically delete files on Linux OS? I am thinking of using the unlink
function call, but I wonder if you have a better idea, as the C++ standard has no mention of file deletion operation and it is system dependent.
Yep -- the C++ standard leaves this stuff up to the OS, so if you're on Linux (or any POSIX system), unlink()
is what you've got.
The C standard provides remove()
, which you could try, but keep in mind that its behavior is unspecified for anything other than a 'regular file', so it doesn't really shield you from getting into platform-specific filesystem details (links, etc).
If you want something higher-level, more robust, and more portable, check out Boost Filesystem .
The Standard includes a function called remove which does that. Though i would prefer boost.filesystem
for that (if i already use boost anyway).
#include <cstdio>
int main() {
std::remove("/home/js/file.txt");
}
unlink()
is defined by the POSIX standards, and hence will exist on any POSIX compatible system, and on quite a few that aren't POSIX compatible too.
unlink is the correct way to do it.
Note that recent kernels also offer unlinkat
. This function is faster than unlink
if you have a file descriptor on the directory itself.
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