What do you mean by the “s” permission bit in a file?

1.	What do you mean by the “s” permission bit in a file?
Answer» The SUID (Set User ID) bit is known as the "s" bit. SUIDS are special FILE permissions for executable files that enable other USERS to run the file as the file owner. There will be an s (to INDICATE SUID) special permission for the user instead of the normal x, which represents EXECUTE permissions. A file that has the "s" bit set will grant the process the rights of the file's owner while the program is running. Example: Executing the "passwd" COMMAND to change the password, for example, allows the user to write the new password to the shadow file even though its owner is "root".

Answer»

The SUID (Set User ID) bit is known as the "s" bit. SUIDS are special FILE permissions for executable files that enable other USERS to run the file as the file owner. There will be an s (to INDICATE SUID) special permission for the user instead of the normal x, which represents EXECUTE permissions. A file that has the "s" bit set will grant the process the rights of the file's owner while the program is running.

Example:

Executing the "passwd" COMMAND to change the password, for example, allows the user to write the new password to the shadow file even though its owner is "root".

Discussion

No Comment Found

Related InterviewSolutions

How to use pipe commands?
How can we create a function in shell script?
Write difference between grep and find command.
Write the difference between $$ and $!?
Name the command that one should use to know how long the system has been running.
Explain how you will open a read-only file in Unix/Shell.
How will you find total shells available in your system?
What do you mean by metacharacters?
Name different commands that are available to check the disk usage.
Name the command that is used to display the shell's environment variable.