On Sat, 20 Dec 2003, guy keren wrote: > > The slides are temporarily available at the following URL: > > http://users.actcom.co.il/~choo/users-processes-and-permissions/ > > examples will be shown on a live linux system during the lecture. > > note that i decided to cut off the I/O redirection stuff - there are > already 29 slides, and that's the top for a 2-hour lecture (yes, that's > right. the lecture is going to span 2 hours, with a 10-minute break > between them). > > someone with access to haifux's home page - please put the slides there as > well. the 'tar.gz' file is temporarily available for download from: > > http://users.actcom.co.il/~choo/users-processes-and-permissions.tar.gz > > if anyone has any comments/corrections and sends them over, i will try to > fix them before the lecture. > > see you on monday,
The slides are on vipe. I think that the title of the whole lecture, occupying a great deal of the screen, should be ommited. It is enough that it is in the title of the page. The real heading of the page is hidden somewhere under tha nav bar. I think when /etc/passwd is discussed, /etc/shadow should also be mentioned, as this is actually how systems work nowadays. You mention shadowwing, but not /etc/shadow slide 6: I find the last line redundunt. saying "normally" is enough to say that sometimes it is not, and if you you say nothing of it now, there is not point to add another line saying you are not saying anything. You use the terms owner, group, others. this is very confusing (I was confused like this for years): chmod o+w is not for the owner: o stands for others. whereas a stands for all. Using "owner" all along the lecture would imprint the term owner. I think also a very important thing to teach is to check after yourself when you change permissions, at least in the first few times, to see you did what you intended. And only that. slide 10:I would reccoment doing the RWX letters upper caps, like you did with the U,G upto that point. Many slides are bigger than a screen (at least mine). Uncomfortable for a lecture. slide 12: s/Lets/Let's/ (Let's is a short for Let us) 13: the font of the example is way too small. Check out the size of the font is the basic admin lecture- people complained on its small size then. 14,15: Capital letters on the "give" lines. 15: Ask the system administrator to create a new group containing this list of users: I think we should assume they have (at lesat some of them ) access to root, and teach how to do that. 16: Make the Group-owner of the file be this group: I think the slides should mention chgrp. 21: I think we should teach also (and in my opinion, instead) the shell commands which do similar actions: ^c, bf, fg. It is dangerous to send commands with kill, because a kill might be sent by mistake. and we should warn that replacing the order of the pid and the signal is hazardous- it creates kill -KILL instead of what we wanted. 22: in "Other then the": s/then/than/ 23,24(twice): in "rather then": s/then/than/ 26: when my screen is too narrow, the lines (with pre) go out of the screen on the right, but the frame does not. Not that I think that there is anything to do abou this, but maybe somebody else knows. This is the first time you show how the permissions are written (in tris of wrx). And you never explained so far the fact that it is abinary representation, and you can access the chmod in octal, and from what side to what do you read the number (little/big endian). you say that the permissions of 888 are not necessary for a symlink. I never changed those, but I assume this works as a bitwise and with the permissions of the real file. anyway, please say something about this. also: when you chmod a symlink, you chmod only the link, not the file, right? you can remove only the symlink, but if you do rm -rf to the symlink, and it is a directory, you will remove real files. so they should be warned about this- this is not hazard-free. 28: "to see the a" should have a capital T. 29: I personally find the summary line :"Google for them all on your spare time.." improper. you need a summary slide, which will say what you DID cover. and I think you should talk about sticky bit as well, to make the picture full. Otherwise, great slides. Orna. -------------------------------------------------------------------------- Haifa Linux Club Mailing List (http://www.haifux.org) To unsub send an empty message to [EMAIL PROTECTED]
