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25 lines
652 B
Markdown
25 lines
652 B
Markdown
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## Name
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access - check if a file is accessible
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## Synopsis
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```**c++
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#include <unistd.h>
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int access(const char* path, int mode);
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```
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## Description
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Check if a file at the given *path* exists and is accessible to the current user for the given *mode*.
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Valid flags for *mode* are:
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* `F_OK` to check if the file is accessible at all,
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* `R_OK` to check if the file can be read,
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* `W_OK` to check if the file can be written to,
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* `X_OK` to check if the file can be executed as a program.
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## Return value
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If the file is indeed accessible for the specified *mode*, `access()` returns 0. Otherwise, it returns -1 and sets `errno` to describe the error.
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