Hi
How can I prevent anyone from logging in as root directly? I have added the line
console=/dev/null
to the file /etc/default/login
I was still able to login as root from the console. Please advice.
Thanks
Srini (4 Replies)
At the office, we often have to edit one file with VI. We are 4-6 workers doing it and sometimes can be done at the same time.
We have found a problem and want to prevent it with a file lock. Is it possible and how ?
problem :
Worker-a starts edit VI session on File-A at 1PM
Worker-b... (14 Replies)
What is the best way to logoff users from my Unix system? I have done a search and found that you can do a w or who - find who is on, and ps-ef | grep <user> and kill their processes. But what if you have a bunch of users and you need them off the system quickly? Killing individual processes... (1 Reply)
We have a shared development box, running Solaris 10 that is an NIS client, all the developers have local root password. If they know the NIS uid of another user, they can just do
% useradd -u <uid> login
And then log in as that user and have full access to his files in his home directory. ... (3 Replies)
I have a script which do validation check and perform code migration from one env. to another, this is built for users/developers.
How can I prevent this shell script from copy or read from users, as they can modify it and run it as per their requirement where as this has to be standard script and... (1 Reply)
Dear all,
i have two users user1 and user2 i want force user1 to login first by user2 and then su - user1
i want to prevent logging user1 from console directly (5 Replies)
I need to list users in /etc/passwd with root's GID or UID or /root as home directory
If we have these entries in /etc/passwd
root:x:0:0:root:/root:/bin/bash
rootgooduser1:x:100:100::/home/gooduser1:/bin/bash
baduser1:x:0:300::/home/baduser1:/bin/bash... (6 Replies)
So far nobody on ASC, nor anywhere was able to respond to my issue and Google wasn't much of help either.
I started to experience the issue some time ago: my OS is Lion 10.7.5. It occurs in all apps that have the function of versioning (iWork which I have updated up to v9.2, namely, Pages 4.2,... (0 Replies)
Discussion started by: scrutinizerix
0 Replies
LEARN ABOUT DEBIAN
console
CONSOLE(4) Linux User's Manual CONSOLE(4)NAME
console - console terminal and virtual consoles
DESCRIPTION
A Linux system has up to 63 virtual consoles (character devices with major number 4 and minor number 1 to 63), usually called /dev/ttyn
with 1 <= n <= 63. The current console is also addressed by /dev/console or /dev/tty0, the character device with major number 4 and minor
number 0. The device files /dev/* are usually created using the script MAKEDEV, or using mknod(1), usually with mode 0622 and owner
root.tty.
Before kernel version 1.1.54 the number of virtual consoles was compiled into the kernel (in tty.h: #define NR_CONSOLES 8) and could be
changed by editing and recompiling. Since version 1.1.54 virtual consoles are created on the fly, as soon as they are needed.
Common ways to start a process on a console are: (a) tell init(8) (in inittab(5)) to start a getty(8) on the console; (b) ask open(1) to
start a process on the console; (c) start X - it will find the first unused console, and display its output there. (There is also the
ancient doshell(8).)
Common ways to switch consoles are: (a) use Alt+Fn or Ctrl+Alt+Fn to switch to console n; AltGr+Fn might bring you to console n+12 [here
Alt and AltGr refer to the left and right Alt keys, respectively]; (b) use Alt+RightArrow or Alt+LeftArrow to cycle through the presently
allocated consoles; (c) use the program chvt(1). (The key mapping is user settable, see loadkeys(1); the above mentioned key combinations
are according to the default settings.)
The command deallocvt(1) (formerly disalloc) will free the memory taken by the screen buffers for consoles that no longer have any associ-
ated process.
PROPERTIES
Consoles carry a lot of state. I hope to document that some other time. The most important fact is that the consoles simulate vt100 termi-
nals. In particular, a console is reset to the initial state by printing the two characters ESC c. All escape sequences can be found in
console_codes(4).
FILES
/dev/console
/dev/tty*
SEE ALSO charsets(4), console_codes(4), console_ioctl(4), mknod(1), tty(4), ttys(4), getty(8), init(8), chvt(1), open(1), deallocvt(1), loadkeys(1),
resizecons(8), consolechars(8), mapscrn(8).
Console tools 28 Oct 1997 CONSOLE(4)