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Homework and Emergencies Homework & Coursework Questions Trouble with setting permissions and such Post 303045030 by vbe on Wednesday 11th of March 2020 03:21:55 AM
Old 03-11-2020
Welcome on board, and thanks for the effort and honesty in following our rules. This room is here to help you out with your studies, not do the work for you and has been accepted by most colleges if rules are respected.
Quote:
. I Am learning sysadmin fundamentals but it is extremely hard. Please help!
Not that hard, once the idea of what is expected from a sysadm: Administering a UNIX environment with users, printers, server(s) and maybe workstations...
Quote:
1. The problem statement, all variables and given/known data:
Set permissions on sensitive files:
I dealing with users: users have rights and permissions and UNIX permissions (basic) are limited to 3 cases:
the user/ownrt, a group owner, and the rest of the planet
Quote:
Set permissions on /etc/shadow to allow only root read and write access.
Set permissions on /etc/gshadow to allow only root read and write access.
How do you think this can be done knowing the 3 cases?
I suggest you look at the man pages of your 3 commands ls, chown, chmod
I let you start now, Im off to physio and will look and complete once back
 
Test Your Knowledge in Computers #94
Difficulty: Easy
The mv command in Linux moves a file from one location to another, but only in the same directory.
True or False?

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logindevperm(4)                                                    File Formats                                                    logindevperm(4)

NAME
logindevperm, fbtab - login-based device permissions SYNOPSIS
/etc/logindevperm DESCRIPTION
The /etc/logindevperm file contains information that is used by login(1) and ttymon(1M) to change the owner, group, and permissions of devices upon logging into or out of a console device. By default, this file contains lines for the keyboard, mouse, audio, and frame buffer devices. The owner of the devices listed in /etc/logindevperm is set to the owner of the console by login(1). The group of the devices is set to the owner's group specified in /etc/passwd. The permissions are set as specified in /etc/logindevperm. Fields are separated by TAB and/or SPACE characters. Blank lines and comments can appear anywhere in the file; comments start with a hash- mark, ` # ', and continue to the end of the line. The first field specifies the name of a console device (for example, /dev/console). The second field specifies the permissions to which the devices in the device_list field (third field) will be set. These permissions must be expressed in octal format. For example, O774. A device_list is a colon-separated list of device names. Note that a device name must be a /dev link. A device entry that is a directory name and ends with "/*" specifies all entries in the directory (except "." and ".."). For example, "/dev/fbs/*" specifies all frame buffer devices. Once the devices are owned by the user, their permissions and ownership can be changed using chmod(1) and chown(1), as with any other user- owned file. Upon logout the owner and group of these devices will be reset by ttymon(1M) to owner root and root's group as specified in /etc/passwd (typically other). The permissions are set as specified in the /etc/logindevperm file. FILES
/etc/passwd File that contains user group information. SEE ALSO
chmod(1), chown(1), login(1), ttymon(1M), passwd(4) NOTES
/etc/logindevperm provides a superset of the functionality provided by /etc/fbtab in SunOS 4.x releases. SunOS 5.10 22 Oct 2003 logindevperm(4)

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