Question

The file permission 764 means?

1) Every one can read, group can execute only and the owner can read and write
2) Every one can read and write, but owner alone can execute
3) Every one can read, group including owner can write, owner alone can execute

Answer 1

Permission code 764 represents Unix-like permissions where the owner has read, write, and execute permissions; the group has read and write permissions; and others have read permission only.

Step-by-step explanation:

The permission code 764 in a file system that uses Unix-like permissions can be understood by breaking down the digits representing different levels of permissions for different sets of users. The first digit is for the owner of the file, the second digit is for the group the file belongs to, and the third is for others (everyone else).

In this case, 7 means the owner has read (4), write (2), and execute (1) permissions which add up to 7. The digit 6 for the group means read (4) and write (2) permissions totaling to 6, which allows group members to read and write the file but not execute it. Lastly, the digit 4 for others means they have only read permission for the file. Summarily, the permission 764 allows the owner to read, write, and execute; the group to read and write; and others to only read the file.