Sponsored Content
Full Discussion: Test Connection to hosts
Top Forums UNIX for Dummies Questions & Answers Test Connection to hosts Post 302711521 by SkySmart on Saturday 6th of October 2012 05:46:15 PM
Old 10-06-2012
Test Connection to hosts

i have about 3500 hosts/devices which i monitor.

i monitor them from one host. we'll call this one host HOSTA. HOSTA has connectivity to all 3500 hosts/devices.

now, i have to create a backup for HOSTA. and the back up is in another state.

how do i get a list of all open ports on HOSTA so I can have them replicated on HOSTB?

please keep in mind, i wont be the one making the actual change. i just need to have the information ready to give to the necessary personnel that will be setting it up.

so the options i have in mind are:

Code:
nmap OR
netcat (nc)

how can i use either of these two commands to get all open ports that HOSTA can connect to on all 3500 hosts/devices?

for example:

lets say one of the 3500 hosts/devices i monitor is called merchant-01.skysmart.net

i'm hoping there will be a command similar to this:

Code:
nmap HOSTA merchant-01.skysmart.net

what i'll be expecting the aforementioned command to do is get me a list of ALL OPEN ports that HOSTA can connect to on merchant-01.skysmart.net. when i say all, i mean all. udp, tcp, whichever.

any ideas?

os: Linux Red Hat/SunOS
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to Create a shell script to test the telnet connection status

Hi friends, I'm newbie to shell script. I wanted to create a shell script which able to write a result for all the telnet connection status. For example, from this machine I want to test the telnet connection (total 100+ servers) with this machine. Any idea how to write this shell script?... (16 Replies)
Discussion started by: yhcheong
16 Replies

2. Shell Programming and Scripting

Database Connection test in unix Script

i have a unix script that gives me the sysdate from the database EDNAMID.WORLD.What i want my script to do the following 1) Establish a database connection 2) if database connection is successfull then echo the message "Connected" 3) put the o/p of the Sql query in a spool file 4) then... (3 Replies)
Discussion started by: ali560045
3 Replies

3. Shell Programming and Scripting

Connection Test Script

I am writing a script to do some conditional logic based on the results of a connection test. I need to capture the output of netcat, the 3 expected conditions are as follows. I need to capture the output of this command. I could write this to a file, but I would like to do it clearer if possible.... (1 Reply)
Discussion started by: princeboot
1 Replies

4. Shell Programming and Scripting

Need help to make connection to various hosts

Guys If someone could help me? Basically I want to connect from my central server and run the script to remote servers (in our environment we do not need a username/password to connect); like below ssh <server_name_1> /ora/rman/scripts/bk2.sh 2>/dev/null >> /tmp/an.log ssh <server_name_2>... (3 Replies)
Discussion started by: anjum.suri
3 Replies

5. Shell Programming and Scripting

bash script to test network connection - please help

I want to test if my host can connect to any of the following 10 hosts (192.168.1.0 to 192.168.1.9) I didnt know which command i should use, so i chose ping. (i wonder if i should use tracepath or sth else) my code is the following: #!/bin/bash clear firstPart="192.168.1" maxNum="9" ... (2 Replies)
Discussion started by: shadow_boi
2 Replies

6. UNIX for Dummies Questions & Answers

Test new DSN connection to sql server

I installed an odbc driver and created a DSN to connect to a sql server database on AIX 6. I want to know how to test the DSN from the command line. What syntax or commands do I use? ---------- Post updated at 11:44 AM ---------- Previous update was at 08:26 AM ---------- OK I figured out how... (9 Replies)
Discussion started by: Jdbrown239
9 Replies

7. UNIX for Dummies Questions & Answers

Shell Script to test telnet connection using port

Hello, I need to test telnet connections using port number for few hosts. Could you please help me? Thanks !! (1 Reply)
Discussion started by: skhichi
1 Replies

8. HP-UX

How can I test ldap connection to DC?

Hi all, Recently, I configured LDAP loadbalancing. So I need to test it from HPUX servers. But I don't know how to to it. I know many ldap connection tools such as ldap browser etc. But it's HPUX 11.31, so please share your practices. Thanks (1 Reply)
Discussion started by: sembii
1 Replies

9. Shell Programming and Scripting

Ssh to validate multiple remote hosts connection validation.

Dear Folks, I am trying to read a config file contains ip and port numbers. i want to read each line of the config file and check ssh connection is happening or not. Kindly guide. Config file: abc@1.2.342 22 abc@1.2.343 22 abc@1.2.344 22 abc@1.2.345 22... (9 Replies)
Discussion started by: sadique.manzar
9 Replies

10. Solaris

How to copy a tar file on a series of remote hosts and untar it on those hosts?

Am trying to copy a tar file onto a series of remote hosts and untar it at the destination. Need to do this without having to do multiple ssh. Actions to perform within a single ssh session via shell script - copy a file - untar at destination (remote host) OS : Linux RHEL6 (3 Replies)
Discussion started by: sankasu
3 Replies
bdiff(1)						      General Commands Manual							  bdiff(1)

Name
       bdiff - big file differential comparator

Syntax
       bdiff file1 file2 [n] [-s]

Description
       The  command  is  used to find lines that must be changed in two files to bring them into agreement.  Its purpose is to allow processing of
       files that are too large for

       The command ignores lines common to the beginning of both files, splits the remainder of each file into n-line segments, and  invokes  upon
       corresponding  segments.   The  value of n is 3500 by default.  If the optional third argument is given and if it is numeric, it is used as
       the value for n.  This is useful in those cases in which 3500-line segments are too large for causing it to fail.

       The output of the command is the same as the output of the command: line numbers are adjusted to account for the segmenting of the files to
       make  it  look  as  if the files had been processed whole.  Note that because of the segmenting of the files, does not necessarily find the
       smallest sufficient set of file differences.

       If either file1 or file2 is -, the standard input is read.  The optional -s (silent) argument specifies	that  no  diagnostics  are  to	be
       printed by However, this does not suppress possible exclamations by If both optional arguments are specified, they must appear in the order
       indicated above.

Options
       -s		   Suppresses normal diagnostic messages.

Diagnostics
       Use for explanations.

Files
       /tmp/bd?????

See Also
       diff(1)

																	  bdiff(1)
All times are GMT -4. The time now is 04:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy