I thought you could use letters as well with chmod where - means no permision, and + before the letter means permision. Greg ----- Original Message ----- From: Raul A. Gallegos <raul@xxxxxxxxxxxx> To: <speakup at braille.uwo.ca> Sent: Sunday, April 22, 2001 1:32 PM Subject: Re: account permissions. > You are definitely going to need to read the howtos on chmod and permissions but here is a quick overview. When you do an ls -l on a file or directory you > see at the left 10 characters. I'll list them below and what they mean. An example output might be something like: > > -rwxr-xr-x 1 raul users 1028 Mar 12 11:47 testfile > > The first part of the output is mainly what I'm going to describe. These are the permissions. If it is a regular file the first character will be a dash. If it is a > directory the first character will be a d. In the example above we are dealing with a file. Following are 9 characters, where the first 3 are for the owner > permissions, second 3 are for group permissions and last 3 are for world permissions. The order of each set of 3 marks is rwx where if the attribute is enabled > you will see the letter and if not you will see a dash in its place. r means read, w means write and x means executable. In the above example this file is > read/write/executable by owner and just read/executeable by group and world. This is a common state for a script which you want everyone to have > access. > > The following shows the numbers corrisponding to the permissions to you can change them. > > 0 = --- > 1 = --x > 2 = -w- > 3 = -wx > 4 = r-- > 5 = r-x > 6 = rw- > 7 = rwx > > To change permissions use chmod followed by a number followed by the filename. The number is a 3 digit number which means owner/group/world. So to > set the permissions for this file I would have typed chmod 755 testfile. If I only want the owner and group to have access to this file I can give it 770 or 750 > where 7 activates all attributes for this file for the owner and depending on what I want either 7 will give the same permissions for a group or 5 will give only > read/execute permissions for the group. In any case the world will not have access to this file at all. Once the permissions are set the way I want I can > create a group say called test and give only the users that I put in that group access to this file. For this you would need to chown the file to root.test so that > the root owns the file and test is the group it's in. Then I add the users to the test group and they would have access. > > As you can see this is only the surface I've touched on. There is a lot more to permissions and groups but this might give you a start. > > Regards. > > On Sat, 21 Apr 2001 01:01:38 -0400, Jack wrote: > > >i was curious if anyone knows how to apply permissions such as specific > >directory access, access to specific programs or utilities, and time limits > >on specific users or accounts. > >also i was wondering if it was possible to make groups with those > >particular permissions set, so all i need do is asign the user or users to > >that group. > >thanks > > > > > > > >_______________________________________________ > >Speakup mailing list > >Speakup at braille.uwo.ca > >http://speech.braille.uwo.ca/mailman/listinfo/speakup > > > > > > Raul A. Gallegos -- raul at asmodean.net > msn id: ragallegos at hotmail.com -- icq: 5283055 > http://www.asmodean.net > > > > _______________________________________________ > Speakup mailing list > Speakup at braille.uwo.ca > http://speech.braille.uwo.ca/mailman/listinfo/speakup >
