Which command is used to make all files and sub-directories in the directory (progs) executable by all users?

A. chmod -R a+x progs

B. chmod -R 222 progs

C. chmod -1 a+x progs

D. chmod -x a+x progs

E. None of the above

Answer: Option A

Solution(By Examveda Team)

In Unix, the chmod command is used to change the permissions of files and directories. The -R option is used to recursively change permissions for the specified directory and its subdirectories. The a+x part of the command grants execute permission to all users (owner, group, and others). So, chmod -R a+x progs makes all files and subdirectories in the progs directory executable by all users.
Therefore, Option A is the correct command to achieve the desired task.