The chmod command is used to

The chmod command is used to

• A. Display the current directory contents
• B. Change file permissions
• C. Start or stop services
• D. Copy files with permissions preserved

Answer: (B)

This item tests how access to files is controlled in Unix-like systems and how the chmod command adjusts those access rights. Permissions determine who can read, write, or execute a file, and these are set separately for the owner, the group, and others. chmod is the tool used to modify those permission bits, changing who can do what with a file or directory. For example, giving the owner execute permission (chmod u+x file) or setting specific permissions with numeric modes (chmod 644 file) to allow the owner read/write and others read-only. It’s about altering access rights, not about listing contents, starting or stopping services, or copying files with their permissions preserved.

This item tests how access to files is controlled in Unix-like systems and how the chmod command adjusts those access rights. Permissions determine who can read, write, or execute a file, and these are set separately for the owner, the group, and others. chmod is the tool used to modify those permission bits, changing who can do what with a file or directory. For example, giving the owner execute permission (chmod u+x file) or setting specific permissions with numeric modes (chmod 644 file) to allow the owner read/write and others read-only. It’s about altering access rights, not about listing contents, starting or stopping services, or copying files with their permissions preserved.