I'm curious about the reasoning behind using an uppercase 'R' for the recursive option in the chown and chmod commands. Unlike chmod, which has a lowercase 'r' for read permissions, there's no lowercase variant for recursion. What's the story behind this?
3 Answers
The uppercase 'R' is used for recursion in both chown and chmod to keep things consistent across command-line tools. The lowercase 'r' in chmod does exist, but it’s specifically for adding or removing read permissions. Just remember, the uppercase 'R' applies to actions that affect directories and their contents recursively!
Yeah, I get the confusion. I use octal permissions mostly, so I never really grasped how the letter cases work.
Exactly! In many Unix commands, uppercase 'R' is used for recursion. For example, grep also uses it, allowing for a more straightforward experience when learning various utilities.
Good point! It’s all about keeping a consistent convention across commands for clarity.
Thanks for the explanations! I always thought the cases were random, but now I see there's logic behind choosing uppercase for recursion.
That makes sense! I had been confused about the different uses of 'R' and 'r'. Having that clarity helps! Thanks!