chmod help please

[LackeyLad]

On my server i am trying to set my users up correctly.
I am trying to assign the permissions with chmod command.

here is what i am after:
1. all users can go back one directory from their home login to the /home dir, but noplace else.

i messed up and did a

chmod 700 /

so now no users can log in.
any help?

[tashirosgt]

The default permissions on / are
drwxr-xr-x
according to my machine. The 'x' is important for directories.

I don't understand whether you are asking how to use the chmod command. I find it easier to do things like
chmod u+rwx /
chmod g+rx /
chmod o+x /
than to use the numbers.
(I don't know about the famous "sticky bit" )

If the question is about how to log in, use a rescue cd or tomsrtbt. Perhaps you can mount your / directory.

[jim]

http://catcode.com/teachmod/

[LackeyLad]

so...

if i wanted to set my system back to default, i.e the users that login can only access there /home and nowhere else, how can i do that with cdmod?

right now users that sftp into my system can get into /etc and /var because i botched everything up.

please help.

[tashirosgt]

You have two problems. The first is to determine what the permissions on the directories and files should be. If you have another Fedora installation, look at it. The second is how to change the permissions with chmod, which (I think) has been explained. Generally speaking if root is the owner and root is the group and you don't want another user to write into myfile, use chmod o-w myfile. I don't think one can give a general rule about the reading and execution of files by non-root users. They are supposed to be able to read and execute some of them. And there might be some "temp" type files that that must be able to write to. I don't know a way to reset all your files to their former state with a single command.

[Big Lebowski]

What type of access do the remote users use?
ie just ftp?

If it's command line access a restricted shell would be better than chmod. Something like rbash.