The
fs.accessSync() method is used to synchronously test the permissions of a given file or directory. The permissions to be checked can be specified as a parameter using file access constants. It is also possible to check multiple file permissions by using the bitwise OR operator to create a mask with more than one file constant.
Syntax:
fs.accessSync( path, mode )
Parameters: This method accepts two parameters as mentioned above and described below:
- path: It is a String, Buffer or URL which denotes the path of the file or directory for which the permission has to be tested.
- mode: It is an integer value that denotes the permission to be tested for. The logical OR operator can be used to separate multiple permission. It can have the values
fs.constants.F_OK, fs.constants.R_OK, fs.constants.W_OK and fs.constants.X_OK. It is an optional parameter. The default value is fs.constants.F_OK.
Below examples illustrate the
fs.accessSync() method in Node.js:
Example 1: This example shows the testing of the read and write permission of a file.
Output:
Giving only read permission to user
> Checking Permission for reading the file
File can be read
> Checking Permission for reading and writing to file
No Read and Write access
Example 2: This example shows the testing of a file if it exists.
Output:
> Checking if the file exists
File does not exist
Creating the file
> Checking if the file exists
File does exist
Reference: https://nodejs.org/api/fs.html#fs_fs_accesssync_path_mode
