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Access

Base/usr/share/man/man2/access.md

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Original Source

Name

access - check if a file is accessible

Synopsis

**c++
#include <unistd.h>

int access(const char* path, int mode);

Description

Check if a file at the given path exists and is accessible to the current user for the given mode. Valid flags for mode are:

  • F_OK to check if the file is accessible at all,
  • R_OK to check if the file can be read,
  • W_OK to check if the file can be written to,
  • X_OK to check if the file can be executed as a program.

Return value

If the file is indeed accessible for the specified mode, access() returns 0. Otherwise, it returns -1 and sets errno to describe the error.