09-28-2005
User ID (UID) in AIX
what is the upper limit for UID is AIX 5.3 ?
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am sure someone will yell at me over this post, but honestly I have searched. It doesn't help that I am not sure what to search on.
Little background. Working at new company, Company has a program on a Unix box AIX.4. I know virtually nothing about Unix and Neither does anyone else here ... (1 Reply)
Discussion started by: swoozie
1 Replies
2. AIX
Hello,
My first post to the Unix forums, thanks for having me!
The division of the company I work for uses a xseries/redhat/VMWareServer
solution to make sure that we keep hardware overhead low and use our machines to as near capacity as we can. These boxes are Intel with usually
dual or... (1 Reply)
Discussion started by: greenteabagger
1 Replies
3. Shell Programming and Scripting
Hi All,
I need to change the UID numbers of many NIS users, is there any command to modify the UID in NIS maps ? ( like usermod) so that their file permissions will be same even with their new UID.
If not, how to check all the files owned by particular user in a computer and change the... (1 Reply)
Discussion started by: RAA
1 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I know the uid and I wan to know the user name the uid belongs to. How can I get it.
Suppose My user name is ssnayak and coresponding uid is 1110
Similarly I know one uid 1212 and how can I come to know the user name for this uid.
Thanks & Regards,
Siba (3 Replies)
Discussion started by: siba.s.nayak
3 Replies
5. AIX
I would like to start my AIX UID allocation at a number far above the standard something like say 1000
however for the life of me i can't seem to find a place where i am able to set or see where aix looks for the user id's by default for allocation
common sense would say that it looks in... (1 Reply)
Discussion started by: dgaixsysadm
1 Replies
6. UNIX for Dummies Questions & Answers
Hi,
I know the user's UID, but I need to know the user's username which has this UID. How can I do it?? Any ideas?
Thanks! (7 Replies)
Discussion started by: rodrigoroma
7 Replies
7. Shell Programming and Scripting
Hi, I want to write a script to check whether an user ID is used in my server and then create that user.
If the user ID is not used, I will echo something like "OK, continue" and then continue to execute the script. Else, I will echo something like "Used, exit" and then exit the script.
As... (4 Replies)
Discussion started by: dirkaulo
4 Replies
8. UNIX for Advanced & Expert Users
Hi,
As the /etc/passwd file contents all system and other users accounts on a linux/unix system, can anyone tell me what is the User ID values range for human user accounts (not system user accounts) on a linux (Red Hat/SuSE etc) and Unix (Solaris) OS.
I heard below number 100, all users are... (2 Replies)
Discussion started by: sanzee007
2 Replies
9. Shell Programming and Scripting
Hi,
'ps -ef' returns output of the following format
UID PID PPID C STIME TTY TIME CMD
root 17573 1 0 Sep12 tty6 00:00:00 /sbin/mingetty tty6
hpsmh 18150 14864 0 Sep12 ? 00:00:00 /opt/hp/hpsmh/sbin/hpsmhd -DSSL -f /opt/hp/hpsmh/conf/smhpd.conf
root ... (3 Replies)
Discussion started by: ysrini
3 Replies
10. AIX
Hi Everyone,
We are encountering the following issue on AIX 5.3. When we do ls -ltr the list displays only user id and group id instead of user name and group name.
This is happening for all users except root. Whe we do ls -ltr with root user it shows perfectly fine.
When we searched... (25 Replies)
Discussion started by: madhav.kunapa
25 Replies
LEARN ABOUT LINUX
user-keyring
USER-KEYRING(7) Linux Programmer's Manual USER-KEYRING(7)
NAME
user-keyring - per-user keyring
DESCRIPTION
The user keyring is a keyring used to anchor keys on behalf of a user. Each UID the kernel deals with has its own user keyring that is
shared by all processes with that UID. The user keyring has a name (description) of the form _uid.<UID> where <UID> is the user ID of the
corresponding user.
The user keyring is associated with the record that the kernel maintains for the UID. It comes into existence upon the first attempt to
access either the user keyring, the user-session-keyring(7), or the session-keyring(7). The keyring remains pinned in existence so long as
there are processes running with that real UID or files opened by those processes remain open. (The keyring can also be pinned indefi-
nitely by linking it into another keyring.)
Typically, the user keyring is created by pam_keyinit(8) when a user logs in.
The user keyring is not searched by default by request_key(2). When pam_keyinit(8) creates a session keyring, it adds to it a link to the
user keyring so that the user keyring will be searched when the session keyring is.
A special serial number value, KEY_SPEC_USER_KEYRING, is defined that can be used in lieu of the actual serial number of the calling
process's user keyring.
From the keyctl(1) utility, '@u' can be used instead of a numeric key ID in much the same way.
User keyrings are independent of clone(2), fork(2), vfork(2), execve(2), and _exit(2) excepting that the keyring is destroyed when the UID
record is destroyed when the last process pinning it exits.
If it is necessary for a key associated with a user to exist beyond the UID record being garbage collected--for example, for use by a
cron(8) script--then the persistent-keyring(7) should be used instead.
If a user keyring does not exist when it is accessed, it will be created.
SEE ALSO
keyctl(1), keyctl(3), keyrings(7), persistent-keyring(7), process-keyring(7), session-keyring(7), thread-keyring(7),
user-session-keyring(7), pam_keyinit(8)
Linux 2017-03-13 USER-KEYRING(7)