Typos in Exercise 32.1
In Exercise 32.1 an example of adding permissions, rather than replacing them, is given. The syntax of those commands is wrong, as it includes the =
symbol as well as the +
or -
symbol:
Text in exercise:$ chmod u=+w,g=-w,o=+rw afile
$ chmod ug=rwx,o=-rw afile
Correct format:$ chmod u+w,g-w,o+rw afile
$ chmod ug=rwx,o-rw afile
Comments
-
Hello herecomesbrod, Thank you for pointing this out. It will be updated for the next version.
Regards, Lee
0 -
there was an extensive discussion of this in the Bootcamp forum. It is not "wrong", I am on the road and am not able to cut and paste from that discussion, so if you or Luis can do this I would appreciate it. In short the exercise says to try and do different things. This is not an incorrect syntax, just not the one you might use for a certain end.
0 -
Thanks for your replies Lee and coop.
I understand that you are saying that the examples given are not meant to work in a particular way and are for students to investigate. So it is not a typo, but maybe the way the exercise is presented is a bit confusing.
0 -
Hi,
This is the Coop's answer in this forum thread: https://forum.linuxfoundation.org/discussion/comment/25426#Comment_25426
Luis is pointing out to you things you already know as best I can tell and let me address what you said directly.
.
You are right in some sense and but in another sense you are reading too much into the wording, more than was intended . In >your post you say:
.
"Unfortunately u=+... or u=-... etc. don't work as expected, neither on Ubuntu nor on Centos.
What works is this: ...."
.
The problem is with the phrase "as expected" by which you mean "as I expected". There is nothing in the lab that indicates the = >sign should not perform as it actually does. The purpose of the exercise is to try different things and see what happens, and voila >you learned something. I suppose the lab should not say "The syntax is pretty obvious" as that is the source of the confusion and >we will eliminate it in the next version. So thanks for pointing this out. I'm always amazed when someone raises something about >a phrasing that has been there for a number of years, and has never caused confusion before. Keeps us on our toes.Regards,
Luis.0
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