Which UNIX/Linux command is used to make all files and sub-directories in the directory “progs” executable by all users ?

1. Achmod− R a+x progs
2. Bchmod −R 222 progs
3. Cchmod−X a+x progs
4. Dchmod −X 222 progs

Pick an option to check yourself, or open the answer below.

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Correct answer: A. chmod− R a+x progs

Explanation

chmod -R a+x progs adds execute permission for all users, recursively through sub-directories.