In the following Unix Tip from Unix Guru Universe, are there some typos?
Specifically, should:
"From hosts(user:deepak)" be "From host2(user:deepak)"? (I'm almost 100% certain it should)
"rlogin hosts.domain.com -l paul" be "rlogin host2.domain.com -l paul"?
Some related questions (to one thing or another):
is there any better place to ask questions about these Unix Tips of the Day?
can anyone suggest some very simple ways to learn about rlogin, rsh, telnet, ssh and such? I seem to get easily confused, and I'd like to find some simple "bite sized" sources of information with sketches that would help me learn this stuff once and for all.
Hi ,
I have wrote a telnet clinet application to interact with remote system . This program takes the screen shots for every interaction and send back to us. After connecting to remote machine , i want to call tip utility to interact with a device which is connected to one remote system. Now my... (0 Replies)
Hi I have just a few questions about the Unix aka NIX operating system.
1. Is it a free Operating System and if so where can I obtain it.
2. Where can I start out for a newbies guide to the OS.
Thanks (1 Reply)
Hi!
Suppose I am at a location xyz:/abc1/abc2/abc3
Is it possible to move to another location xyz:/mnl1/mnl2/mnl3
by some coding within a script? (5 Replies)
I need to be able to compare dates in the format of Jan 10, 2012 and Jan 10 2012. (Notice one has a comma).
Then I need to find the date that is 7 days before those dates if they are equal.
How can I do this in Bash.
Thank ahead (4 Replies)
I have a value in a file i am processing that has a date like "2012-Jun-13"
how can I convert a date like that 2012-06-13?
Am I stuck building an array of three digit months and corresponding numbers and running through the logic of figuring out the number??
or can I convert this with... (1 Reply)
Hi I have a problem with Date format in my code.
1st I am trying to convert today's date to yesterday's using
YESTERDAY3=`perl -e '@y=localtime(time()-86400); printf "%04d/%02d/%02d",$y+1900,$y+1,$y;$y;'`
And once it is done I am trying to using the yesterday date in a grep command to... (3 Replies)
I have added two new sports events.
The FIFA Ballon d'Or is an association football award given annually to the player who is considered to have performed the best in the previous season. It is awarded based on votes by coaches and captains of international teams, as well as journalists from... (0 Replies)
Discussion started by: ni2
0 Replies
LEARN ABOUT CENTOS
passmass
PASSMASS(1) General Commands Manual PASSMASS(1)NAME
passmass - change password on multiple machines
SYNOPSIS
passmass [ host1 host2 host3 ... ]
INTRODUCTION
Passmass changes a password on multiple machines. If you have accounts on several machines that do not share password databases, Passmass
can help you keep them all in sync. This, in turn, will make it easier to change them more frequently.
When Passmass runs, it asks you for the old and new passwords. (If you are changing root passwords and have equivalencing, the old pass-
word is not used and may be omitted.)
Passmass understands the "usual" conventions. Additional arguments may be used for tuning. They affect all hosts which follow until
another argument overrides it. For example, if you are known as "libes" on host1 and host2, but "don" on host3, you would say:
passmass host1 host2 -user don host3
Arguments are:
-user
User whose password will be changed. By default, the current user is used.
-rlogin
Use rlogin to access host. (default)
-slogin
Use slogin to access host.
-ssh
Use ssh to access host.
-telnet
Use telnet to access host.
-program
Next argument is a program to run to set the password. Default is "passwd". Other common choices are "yppasswd" and "set
passwd" (e.g., VMS hosts). A program name such as "password fred" can be used to create entries for new accounts (when run as
root).
-prompt
Next argument is a prompt suffix pattern. This allows the script to know when the shell is prompting. The default is "# " for
root and "% " for non-root accounts.
-timeout
Next argument is the number of seconds to wait for responses. Default is 30 but some systems can be much slower logging in.
-su
Next argument is 1 or 0. If 1, you are additionally prompted for a root password which is used to su after logging in. root's
password is changed rather than the user's. This is useful for hosts which do not allow root to log in.
HOW TO USE
The best way to run Passmass is to put the command in a one-line shell script or alias. Whenever you get a new account on a new machine,
add the appropriate arguments to the command. Then run it whenever you want to change your passwords on all the hosts.
CAVEATS
Using the same password on multiple hosts carries risks. In particular, if the password can be stolen, then all of your accounts are at
risk. Thus, you should not use Passmass in situations where your password is visible, such as across a network which hackers are known to
eavesdrop.
On the other hand, if you have enough accounts with different passwords, you may end up writing them down somewhere - and that can be a
security problem. Funny story: my college roommate had an 11"x13" piece of paper on which he had listed accounts and passwords all across
the Internet. This was several years worth of careful work and he carried it with him everywhere he went. Well one day, he forgot to
remove it from his jeans, and we found a perfectly blank sheet of paper when we took out the wash the following day!
SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995.
AUTHOR
Don Libes, National Institute of Standards and Technology
7 October 1993 PASSMASS(1)