hi scripting experts,
juz wondering if it's possible to have multiple rsh command in a single script? :confused:
ie:
rsh -l <username> "<command>"
rsh -l <username> "<command>"
thanks.
regards,
wee :) (0 Replies)
I am trying to make a script to convert drg files to wav and so far i have this
#!/bin/bash
drg2sbg "$*" -o "$*".sbg
sbagen -Wo "/home/nick/Desktop/I-Doser Wave Files/"$*"" "$*".sbg
rm "$*".sbg
cd "/home/nick/Desktop/I-Doser Wave Files"
rename 's/\.drg$/\.wav/' *.drg
exit
the drg2sbg and... (2 Replies)
I'm reading about debugging aids in bash and have come across the set command. It says in my little book that an addition to typing
set
you can also use them "on the command line when running a script..." and it lists this in a small table:
set -o option Command Line... (5 Replies)
Hi
Can we run the linux command and per script in a single command
$ cd /usr/local/adm/ ;ctsv scmtest_qabuild ;cspec.pl scmtest
This is a combination of linux and clearcase command and last one is perl script with argument.
I can see the first and 2nd coomand is executing but last... (6 Replies)
Hi,
I am trying to write a script to run a command on multiple linux based servers and get the o/p. I am using ssh to login. It is a celerra box and EMC NAS product.
I am able login but i am not able to run nas command nas_pool -size -all the NAS server. I am getting the following error. ... (2 Replies)
here is what i want to achieve.. i have a file with below contents
cat fileName
blah blah blah
.
.DROP this
REJECT that
.
--sport 7800 -j REJECT --reject-with icmp-port-unreachable
--dport 7800 -j REJECT --reject-with icmp-port-unreachable
.
.
.
more blah blah blah
--dport 3306... (14 Replies)
Hi I have folders 1 to 24 (24 folders in total) and inside those folders I have the same file names. I have a command that I want to run but rather than do it individually I was wondering if there is a command to run them all at once.
Thanks
Phil (3 Replies)
RHEL 6.2/Bash shell
root user will be executing the below script. It switches to oracle user and expect to do the following things
A. Source the environment variables for BATGPRD Database (the file used for sourcing is shown below after the script)
B. Shutdown the DB from sqlplus -- The... (13 Replies)
I am looking for help in processing of those options: '-n' or '-p'
I understand what they do and how to use them.
But, I would like to use them with more than one file (and without any shell-loop; loading the 'perl' once.)
I did try it and -n works on 2 files.
Question is:
- is it possible to... (6 Replies)
Hello Forum,
I'm making very good progress on my report thanks to the very helpful people on this forum. I've been able to successfully create my report for my Red Hat servers. But I do have a few ubuntu servers in the mix and I'd like to capture some data from them when an ssh connection is... (8 Replies)
Discussion started by: greavette
8 Replies
LEARN ABOUT REDHAT
ssh-keyscan
SSH-KEYSCAN(1) BSD General Commands Manual SSH-KEYSCAN(1)NAME
ssh-keyscan -- gather ssh public keys
SYNOPSIS
ssh-keyscan [-v46] [-p port] [-T timeout] [-t type] [-f file] [host | addrlist namelist] [...]
DESCRIPTION
ssh-keyscan is a utility for gathering the public ssh host keys of a number of hosts. It was designed to aid in building and verifying
ssh_known_hosts files. ssh-keyscan provides a minimal interface suitable for use by shell and perl scripts.
ssh-keyscan uses non-blocking socket I/O to contact as many hosts as possible in parallel, so it is very efficient. The keys from a domain
of 1,000 hosts can be collected in tens of seconds, even when some of those hosts are down or do not run ssh. For scanning, one does not
need login access to the machines that are being scanned, nor does the scanning process involve any encryption.
The options are as follows:
-p port
Port to connect to on the remote host.
-T timeout
Set the timeout for connection attempts. If timeout seconds have elapsed since a connection was initiated to a host or since the
last time anything was read from that host, then the connection is closed and the host in question considered unavailable. Default
is 5 seconds.
-t type
Specifies the type of the key to fetch from the scanned hosts. The possible values are ``rsa1'' for protocol version 1 and ``rsa''
or ``dsa'' for protocol version 2. Multiple values may be specified by separating them with commas. The default is ``rsa1''.
-f filename
Read hosts or addrlist namelist pairs from this file, one per line. If - is supplied instead of a filename, ssh-keyscan will read
hosts or addrlist namelist pairs from the standard input.
-v Verbose mode. Causes ssh-keyscan to print debugging messages about its progress.
-4 Forces ssh-keyscan to use IPv4 addresses only.
-6 Forces ssh-keyscan to use IPv6 addresses only.
SECURITY
If a ssh_known_hosts file is constructed using ssh-keyscan without verifying the keys, users will be vulnerable to attacks. On the other
hand, if the security model allows such a risk, ssh-keyscan can help in the detection of tampered keyfiles or man in the middle attacks which
have begun after the ssh_known_hosts file was created.
EXAMPLES
Print the rsa1 host key for machine hostname:
$ ssh-keyscan hostname
Find all hosts from the file ssh_hosts which have new or different keys from those in the sorted file ssh_known_hosts:
$ ssh-keyscan -t rsa,dsa -f ssh_hosts |
sort -u - ssh_known_hosts | diff ssh_known_hosts -
FILES
Input format:
1.2.3.4,1.2.4.4 name.my.domain,name,n.my.domain,n,1.2.3.4,1.2.4.4
Output format for rsa1 keys:
host-or-namelist bits exponent modulus
Output format for rsa and dsa keys:
host-or-namelist keytype base64-encoded-key
Where keytype is either ``ssh-rsa'' or ``ssh-dsa''.
/etc/ssh/ssh_known_hosts
BUGS
It generates "Connection closed by remote host" messages on the consoles of all the machines it scans if the server is older than version
2.9. This is because it opens a connection to the ssh port, reads the public key, and drops the connection as soon as it gets the key.
SEE ALSO ssh(1), sshd(8)AUTHORS
David Mazieres <dm@lcs.mit.edu> wrote the initial version, and Wayne Davison <wayned@users.sourceforge.net> added support for protocol ver-
sion 2.
BSD January 1, 1996 BSD