Hi all, would like to find out how can i scp a file from user A in one host to user B in another host?
i know how to get it done if its from user A in machine 1 to user A in machine 2.
1)on machine 1, generate a key pair. put the private key in the .ssh directory.
2)put the public key in /home/A/.ssh/authorized_keys in machine 2.
now i have a situation of scp_ing a file from user A to B. user B does not exist in machine 1 and user A does not exist in machine 2.
what i think will work:
1) in A's home dir in machine 1, generate the key pair. place the private key in /home/A/.ssh
2) put the public key in /home/B/.ssh/authorized_keys. because the command i am using is
it should search in B's .ssh dir for the matching public key right?
You are right. The users on the source and destination systems do not have to be the same. What you are trying to do will work.
Hi,
I want to execute a script - of different user from my script.
I have tried the su command
su - username -c "scriptname"
it works but asked for password.
Is there any way for supplying the password to it thru script, not interactively.
Or is there any other way to achieve the... (5 Replies)
Hi All,
I am new to shell scripting.
Can someone let me know, how to check whether the user exists in the remote system?
I am building a new unix box and before I proceed installing the appliation , I want to check whether the required users are created in the system .
how to do this ?... (1 Reply)
Hi Experts,
We 4 to 5 people are using same UNIX(Solaris) login for our testing purpose. Also we are doing some modifications to existing scripts.
Is it possible to know the each user machine (IP address or machine name) who are using the same login to modify the scripts. So that we can... (12 Replies)
Hi,
I need to login into remote server and execute a shell script over there.
As of now i am making use of ssh command
ssh primUser@135.254.242.2 sh /poll.sh
I am logging in as primUser but unless i change the user to root the script execution on the remote machine is not possible.
... (5 Replies)
Hi All,
URGENT - Please help me form a scipt for this:
I need the LATEST file from a dir on REMOTE machine to be SCP'd to a dir on local machine. (and I need to execute this from local server)
I know that the below cmd is used to find the LATEST file from a dir. But this command is not... (3 Replies)
I currently have a statistics gathering script i run on my Linux servers. One of the stat i gather is total memory in the machine. The script is all perl with the exception of gathering the memory for that i use the following command:
$ram = (`cat /proc/meminfo | grep "MemTotal" | awk... (1 Reply)
HI,
I have parsed a file and stored all my machine name and user name in a list.
Now I want to change in the putty code such that the machine name and user name can be passed through calling that one by one from tht list through an object. Then pass it to the place the putty takes user name... (7 Replies)
Hi all,
Really hope someone can help me, i have been trying lots of things and just cant seem to nail it - and for something that seems straight forward....
Anyway, scenario is I need to log onto a second machine (remote server) from main workstation. Once logged in I need to run a batch... (2 Replies)
Hi everyone! I want to be able to send a signal to another machine on the same network, and have it trigger a script on that machine. Here's the reason why I can't just ssh: I don't have a username on that machine, but there is a user that is always logged on that I can do stuff on.
So, I want... (5 Replies)
I need a shell script to copy files frm a linux machine to a windows machine using SCP. The files keeps changing day-to-day. I have to copy the latest file to the windows machine frm the linux machine.
for example :In Linux, On July 20, the file name will be 20.txt and it should be copied to... (3 Replies)
Discussion started by: nithin6034
3 Replies
LEARN ABOUT OSX
hosts.equiv
HOSTS.EQUIV(5) BSD File Formats Manual HOSTS.EQUIV(5)NAME
hosts.equiv, .rhosts -- trusted remote hosts and host-user pairs
DESCRIPTION
The hosts.equiv and .rhosts files list hosts and users which are ``trusted'' by the local host when a connection is made via rlogind(8),
rshd(8), or any other server that uses ruserok(3). This mechanism bypasses password checks, and is required for access via rsh(1).
Each line of these files has the format:
hostname [username]
The hostname may be specified as a host name (typically a fully qualified host name in a DNS environment) or address, +@netgroup (from which
only the host names are checked), or a ``+'' wildcard (allow all hosts).
The username, if specified, may be given as a user name on the remote host, +@netgroup (from which only the user names are checked), or a
``+'' wildcard (allow all remote users).
If a username is specified, only that user from the specified host may login to the local machine. If a username is not specified, any user
may login with the same user name.
EXAMPLES
somehost
A common usage: users on somehost may login to the local host as the same user name.
somehost username
The user username on somehost may login to the local host. If specified in /etc/hosts.equiv, the user may login with only the same
user name.
+@anetgroup username
The user username may login to the local host from any machine listed in the netgroup anetgroup.
+
+ +
Two severe security hazards. In the first case, allows a user on any machine to login to the local host as the same user name. In the
second case, allows any user on any machine to login to the local host (as any user, if in /etc/hosts.equiv).
WARNINGS
The username checks provided by this mechanism are not secure, as the remote user name is received by the server unchecked for validity.
Therefore this mechanism should only be used in an environment where all hosts are completely trusted.
A numeric host address instead of a host name can help security considerations somewhat; the address is then used directly by iruserok(3).
When a username (or netgroup, or +) is specified in /etc/hosts.equiv, that user (or group of users, or all users, respectively) may login to
the local host as any local user. Usernames in /etc/hosts.equiv should therefore be used with extreme caution, or not at all.
A .rhosts file must be owned by the user whose home directory it resides in, and must be writable only by that user.
Logins as root only check root's .rhosts file; the /etc/hosts.equiv file is not checked for security. Access permitted through root's
.rhosts file is typically only for rsh(1), as root must still login on the console for an interactive login such as rlogin(1).
FILES
/etc/hosts.equiv Global trusted host-user pairs list
~/.rhosts Per-user trusted host-user pairs list
SEE ALSO rcp(1), rlogin(1), rsh(1), rcmd(3), ruserok(3), netgroup(5)HISTORY
The .rhosts file format appeared in 4.2BSD.
BUGS
The ruserok(3) implementation currently skips negative entries (preceded with a ``-'' sign) and does not treat them as ``short-circuit'' neg-
ative entries.
BSD November 26, 1997 BSD