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What are file permissions in Unix, and how are they represented?
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Answer Posted / hr@tgksolutions.com
File permissions in Unix control the access levels for files and directories. They determine who can read, write, or execute a file. Permissions are represented in a triplet format for the owner, group, and others (e.g., rwxr-xr--).
• r: Read permission.
• w: Write permission.
• x: Execute permission.
Permissions can also be represented numerically using a three-digit code, where each digit ranges from 0 to 7 (e.g., 755). The digits represent the sum of the permission values (4 for read, 2 for write, 1 for execute).
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