I just upgraded one my server to latest version RHEL, I have many users who will do SSH from another server. I wanted to update all of the users home directory and remove the security key. For example.
/home/XYZ/.ssh/known_hosts and remove this hostsname.
Please see below and advise. Thanks.
Hi,
I need some help in removing the header (first line) and the trailer (last line) in a give file...
The data file actually comes in EBCDIC format and I converted it into ASCII..
Now I need to strip off the first line and the last line..
I think we can use sed to do something like this:... (2 Replies)
So, I want to read line-by-line a text file with unknown number of files....
So:
a=1
b=1
while ; do
b=`sed -n '$ap' test`
a=`expr $a + 1`
$here do something with b etc
done
the problem is that sed does not seem to recognise the $a, even when trying
sed -n ' $a p'
So, I cannot read... (3 Replies)
Hi all
Is there a way to read and process a gzip file line by line similar to a text file without using gzcat..
while processing a text file we will usually use the logic
exec<sample.txt
while read line
do
echo $line
done
Is there a similar way to process the gz file in the same... (4 Replies)
I have a whole file structure with jpeg files where I want to remove a part of the file name. An application added in many files a case conflict in the naming "xyz 017.jpg (Case Conflict 1)"
So, can someone help me how to get rid of the " (Case Conflict 1)"? What I have is this:
find . -name... (2 Replies)
Good afternoon!
I am a perl newbie. I hope you will be patient with me.
I have a script that needs to be written in perl. I can't do it in awk or shell scripting.
Here is the script:
#!/usr/bin/perl
use POSIX qw(strftime);
use FileHandle;
use Getopt::Long;
use IO::Handle;... (0 Replies)
Hi,
I have some files with some extension e.g. abc.xml.REMOVE,xyz.xml,efg.xml.REMOVE .
I have to remove the .REMOVE extension. I can display it using the below script but cannot rename it.
ls -l|sed 's/\.REMOVE//'
How can I rename this?
Thanks in advance (7 Replies)
I have crontab job a tar file to a directory ( tar -cvf /tmp/backup/or.`date +%m%d%y`. /ora/db/* ) , it will do it every day . Now I don't want to keep too much files , I just want to keep the file for 90 days , can advise if I want to remove the backup file which are elder than 90 days , can... (1 Reply)
Hi,
Though I was successful in following query, I like to know the other ways of doing it.
I have a file that is sent as an attachment via mail. However, while opening it, notepad does not recognize new line character whereas other editors like text pad recognizes new line character of unix.... (2 Replies)
Hi Gurus,
I have a file which contains some special char or space.
when using cat -evt I can see the file as following:
0,"0000","abc/def aaa ... (6 Replies)
Discussion started by: ken6503
6 Replies
LEARN ABOUT REDHAT
pam_xauth
pam_xauth(8) System Administrator's Manual pam_xauth(8)NAME
pam_xauth - forward xauth keys between users
SYNOPSIS
session optional /lib/security/pam_xauth.so arguments
DESCRIPTION
pam_xauth.so is designed to forward xauth keys (sometimes referred to as "cookies") between users.
Without pam_xauth, when xauth is enabled and a user uses the su command to assume another user's priviledges, that user is no longer able
to access the original user's X display because the new user does not have the key needed to access the display. pam_xauth solves the
problem by forwarding the key from the user running su (the source user) to the user whose identity the source user is assuming (the target
user) when the session is created, and destroying the key when the session is torn down.
This means, for example, that when you run su from an xterm sesssion, you will be able to run X programs without explicitly dealing with
the xauth command or ~/.Xauthority files.
pam_xauth will only forward keys if xauth can list a key connected to the $DISPLAY environment variable.
Primitive access control is provided by ~/.xauth/export in the invoking user's home directory and ~/.xauth/import in the target user's home
directory.
If a user has a ~/.xauth/import file, the user will only receive cookies from users listed in the file. If there is no ~/.xauth/import
file, the user will accept cookies from any other user.
If a user has a .xauth/export file, the user will only forward cookies to users listed in the file. If there is no ~/.xauth/export file,
and the invoking user is not root, the user will forward cookies to any other user. If there is no ~/.xauth/export file, and the invoking
user is root, the user will not forward cookies to other users.
Both the import and export files support wildcards (such as *). Both the import and export files can be empty, signifying that no users
are allowed.
ARGUMENTS
debug Turns on debugging messages sent to syslog.
xauthpath=/usr/X11R6/bin/xauth
Specify the path the xauth program (the default is /usr/X11R6/bin/xauth).
IMPLEMENTATION DETAILS
pam_xauth will work only if it is used from a setuid application in which the getuid() call returns the id of the user running the applica-
tion, and for which PAM can supply the name of the account that the user is attempting to assume. The typical application of this type is
su. The application must call both pam_open_session() and pam_close_session() with the ruid set to the uid of the calling user and the
euid set to root, and must have provided as the PAM_USER item the name of the target user.
pam_xauth calls xauth as the source user to extract the key for $DISPLAY, then calls xauth as the target user to merge the key into the a
temporary database and later remove the database.
pam_xauth cannot be told not to remove the keys when the session is closed.
SEE ALSO
/usr/share/doc/pam*/html/index.html
FILES
~/.xauth/import ~/.xauth/export
BUGS
Let's hope not, but if you find any, please report them via the "Bug Track" link at http://bugzilla.redhat.com/bugzilla/
AUTHOR
Nalin Dahyabhai <nalin@redhat.com>, based on original version by Michael K. Johnson <johnsonm@redhat.com>
Red Hat Linux 2001/9/27 pam_xauth(8)