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What does chmod 1777 do?
When the setgid bit is set on a directory all files (or directories) created in that directory will belong to the group that owns the directory. When the sticky bit is set only the owner and root can delete it. The norm for /tmp is 1777.
What is sticky bit and how it works?
A Sticky bit is a permission bit that is set on a file or a directory that lets only the owner of the file/directory or the root user to delete or rename the file. No other user is given privileges to delete the file created by some other user.
What are the restrictions for sticky bits in NFS?
Some UNIX-based Network File System (NFS) servers apply special interpretations or restrictions for the setuid, setgid, and sticky bits. Some versions of UNIX, for example, enforce mandatory locking on a directory with the setgid bit set but no execute permissions.
What does sticky bit mean in Unix operating system?
Sticky Bit. Definition – What does Sticky Bit mean? In Unix-like operating systems, a sticky bit is a permission bit which is set on a file or folder, thereby permitting only the owner or root user of the file or folder to modify, rename or delete the concerned directory or file.
What happens when a sticky bit is set?
When the sticky bit is set, the filesystem treats such files or directories in a unique way that only the owner or the root owner can have rights of modifying, deleting or renaming of these. In Solaris-like operating systems, when the sticky bit is set on non-executable files, the files are not cached by the kernel.
Why do I have a sticky bit on my computer?
This is usually set on swap files to prevent access on the file from flushing more important data from the system cache. It is also used occasionally for benchmarking tests. The sticky bit is also set by the automounter to indicate that a file has not been mounted yet.