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 DEBIAN
qmail-pw2u
qmail-pw2u(8) System Manager's Manual qmail-pw2u(8)NAME
qmail-pw2u - build address assignments from a passwd file
SYNOPSIS
qmail-pw2u [ -/ohHuUC ] [ -cchar ]
DESCRIPTION
qmail-pw2u reads a V7-format passwd file from standard input and prints a qmail-users-format assignment file.
A V7-format passwd file is a series of lines. Each line has the format
user:password:uid:gid:gecos:home:shell
where user is an account name, uid and gid are the user id and group id of that account, and home is the account's home directory. pass-
word, gecos, and shell are ignored by qmail-pw2u.
If you put the output of qmail-pw2u into /var/lib/qmail/users/assign, and then run qmail-newu, qmail-lspawn will obey the assignments
printed by qmail-pw2u. WARNING: After changing any users, uids, gids, or home directories in your passwd file, you must run qmail-pw2u and
qmail-newu again if you want qmail-lspawn to see the changes.
RULES
By default, qmail-pw2u follows the same rules as qmail-getpw. It skips user if (1) uid is zero, (2) home does not exist, (3) user does not
own home, or (4) user contains uppercase letters. It then gives each remaining user control over the basic user address and all addresses
of the form user-anything. A catch-all user, alias, controls all other addresses.
You may change these rules by setting up files in /var/lib/qmail/users:
include
Allowed users, one per line. If include exists, and user is not listed in include, user is ignored.
exclude
Ignored users, one per line. If exclude exists, and user is listed in exclude, user is ignored.
mailnames
Replacement names for users. Each line has the form
user:mailname1:mailname2:...
The addresses mailname1 and mailname1-ext and mailname2 and so on will be delivered to user.
WARNING: The addresses user and user-ext will not be delivered to user unless user is listed as one of the mailnames.
A line in mailnames is silently ignored if the user does not exist.
subusers
Extra addresses. Each line has the form
sub:user:pre:
sub will be handled by home/.qmail-pre, where home is user's home directory; sub-ext will be handled by home/.qmail-pre-ext.
append Extra assignments, printed at the end of qmail-pw2u's output.
OPTIONS -o (Default.) Skip user if home does not exist (or is not visible to qmail-pw2u). Skip user if home is not owned by user.
-h Stop if home does not exist. This is appropriate if every user is supposed to have a home directory. Skip user if home is not
owned by user.
-H Do not check the existence or ownership of home.
-U (Default.) Skip user if there are any uppercase letters in user.
-u Allow uppercase letters in user.
-cchar Use char as the user-extension delimiter in place of -.
-C Disable the user-extension mechanism.
-/ Use home/.qmail-/... instead of home/.qmail-...
SEE ALSO qmail-users(5), qmail-lspawn(8), qmail-newu(8), qmail-getpw(8)qmail-pw2u(8)