There is UID 0 for root.
By adding a second UID 0 user you make it an alias for root.
Still it logs in with its separate password.
I don't know why the login fails. Look at error messages in /var/adm/syslog/syslog.log
How do you login? With ssh? Then, perhaps there is "PermitRootLogin no" in sshd_config, and sshd treats all UID 0 users accordingly.
Once logged in as the alias user, a "whoami" will say "root". Some odd things can happen.
So userdel fails because it sees that "root" has running processes.
Adding a second UID 0 account is no good practice.
A better way is sudo and an appropriate entry in sudoers file.
I've got SUSE 9 installed on a removable hard drive and the system is up and running fine.
I'm trying to copy stuff off a CD onto one of my Linux partitions but I am getting an errors :
* Could not read /media/cdrom/file1.tar.tar
I can browse to the file location on the CD by using the... (11 Replies)
Hi,
In my company, we are using SCO UNIX system and Informix database. Recently, there have been a lot of users accessing to server and sometimes it has made server run very slow. So, I intend to limit number of users of 30 only. Although I have tried to search on the Internet for several days,... (1 Reply)
Hi all,
I am a newbe to aix 5.2. I want to specify the characters used by users while creating user in aix like specifying the length of the password
should i use some sript for that if it is then please let me know how to do this
if yes give me the link for the scripts.
Thanks in advance
... (2 Replies)
Has anyone run into issues creating a mksysb_resource via NIM?
We get the following messages
0042-001 nim: processing error encountered on "master":
0042-006 m_mkbosi: (From_Master) connect A remote host refused an
attempted connect operation.
This happens on the LPARs on the same... (4 Replies)
I have just loaded Sabayon KDE4.2. I have a 64bit comp and have tried several Linux/Unix os and have had problems with all of them and now it seems this one as well. I can't load my printer up and I cannot access any login management. I have had trouble accessing my Login Manager. I have looked... (3 Replies)
Hi everybody,
Currently, I have a script which access a remote computer via SSH, go to a folder already defined in the code and then executes a program in it, just like that:
ssh user@host << EOI
cd path
./file
EOI
It executes fine, but now I want to pass an argument in the command... (2 Replies)
Hello,
I have a large file of syllables /strings in Urdu. Each word is on a separate line.
Example in English:
be
at
for
if
being
attract
I need to identify the frequency of each of these strings from a large corpus (which I cannot attach unfortunately because of size limitations) and... (7 Replies)
Recently, I setup a dual boot on this PC. I can currently jump from Ubuntu 12.04 and 16.04. What I would like to be able to do is access the home directory of my 16.04 OS from within the 12.04, is that possible? I can mount the partition of the hard drive where 16.04 lives from within 12.04 but it... (4 Replies)
Hi Experts,
Need your support
Redhat 6.5
I want to create a user with all(read, write, execute) privileges except that user should not be able to create any new user from his login
to perform any task. (10 Replies)
Discussion started by: as7951
10 Replies
LEARN ABOUT CENTOS
lastlog
LASTLOG(8) System Management Commands LASTLOG(8)NAME
lastlog - reports the most recent login of all users or of a given user
SYNOPSIS
lastlog [options]
DESCRIPTION
lastlog formats and prints the contents of the last login log /var/log/lastlog file. The login-name, port, and last login time will be
printed. The default (no flags) causes lastlog entries to be printed, sorted by their order in /etc/passwd.
OPTIONS
The options which apply to the lastlog command are:
-b, --before DAYS
Print only lastlog records older than DAYS.
-h, --help
Display help message and exit.
-R, --root CHROOT_DIR
Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.
-t, --time DAYS
Print the lastlog records more recent than DAYS.
-u, --user LOGIN|RANGE
Print the lastlog record of the specified user(s).
The users can be specified by a login name, a numerical user ID, or a RANGE of users. This RANGE of users can be specified with a min
and max values (UID_MIN-UID_MAX), a max value (-UID_MAX), or a min value (UID_MIN-).
If the user has never logged in the message ** Never logged in** will be displayed instead of the port and time.
Only the entries for the current users of the system will be displayed. Other entries may exist for users that were deleted previously.
NOTE
The lastlog file is a database which contains info on the last login of each user. You should not rotate it. It is a sparse file, so its
size on the disk is usually much smaller than the one shown by "ls -l" (which can indicate a really big file if you have in passwd users
with a high UID). You can display its real size with "ls -s".
FILES
/var/log/lastlog
Database times of previous user logins.
CAVEATS
Large gaps in UID numbers will cause the lastlog program to run longer with no output to the screen (i.e. if in lastlog database there is
no entries for users with UID between 170 and 800 lastlog will appear to hang as it processes entries with UIDs 171-799).
shadow-utils 4.1.5.1 05/25/2012 LASTLOG(8)