Data mining a text file. Post: 302204867

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Top Forums Shell Programming and Scripting Data mining a text file. Post 302204867 by akbar on Thursday 12th of June 2008 06:27:39 PM

06-12-2008

Registered User

Data mining a text file.

I'm auditing UID consistency across our hosts, and have created the following datafile, consisting of four fields. I would like to get a count of the combination of the last two fields. ie: I would like to find out how many instances there are of "root 0" and how many of "uucp 5", for every line in the file. I know basic perl and basic awk, but can't get my head around how to do this.

Can anyone offer advice?

thank you in advance

akbar

UID: crfw root 0
UID: crfw daemon 1
UID: crfw bin 2
UID: crfw sys 3
UID: crfw adm 4
UID: crfw lp 71
UID: crfw uucp 5
UID: crfw nuucp 9
UID: crfw smmsp 25
UID: crfw listen 37
UID: crfw gdm 50
UID: crfw webservd 80
UID: crfw nobody 60001
UID: crfw noaccess 60002
UID: creb root 0
UID: creb daemon 1
UID: creb bin 2
UID: creb sys 3
UID: creb adm 4
UID: creb lp 71
UID: creb uucp 5
UID: creb nuucp 9
UID: creb smmsp 25
UID: creb listen 37
UID: creb gdm 50
UID: creb webservd 80
UID: creb nobody 60001
UID: creb noaccess 60003

akbar

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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)