Category: Unix Technologies

Networking, Unix Technologies

Configuring/Changing/Updating DNS servers list on GNU/Linux System

Linux System Configuration: login as: root [email protected]’s password: Last login: Fri Oct 25 07:04:21 2013 from xxx.xxx.xxx.xxx Linux temp-sys 2.6.15-29-amd64-server #1 SMP Mon Sep 24 17:31:58 UTC 2007 x86_64                                                                                         GNU/Linux The programs included with the Ubuntu system are free software; the exact distribution terms for each program are described in the individual files in /usr/share/doc/*/copyright. Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by applicable law. root@temp-sys:~#   Checking the list of existing DNS servers configured on the DNS server:   root@temp-sys:/var/named# nslookup www.xenapp.testdom.net ;; connection timed out; no servers could be reached root@temp-sys:/var/named# root@temp-sys:/var/named# cat /etc/resolv.conf #search […]

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Apple, Scripting, Unix Technologies

From Windows, how to remotely force logoff users on MAC OS X Systems (and/or) how to remotely find a process running as a given user and kill it on Unix systems

Have Cygwin Installed on your Windows System  to run any of your Unix commands.  Or you can directly run these commands from any of the Unix based systems Launch Cygwin shell command prompt. On Unix based system launch the terminal that runs the Bash Shell We use SSH to remotely execute the commands on Unix systems.  Whenever you run any SSH command, it’s prompt you to provide your password to remotely connect to the system. To avoid prompt/typing password have the SSH key infrastructure setup as detailed in  Automate command execution on MAC OS X/Unix Systems from Windows Systems remotely […]

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Apple, Scripting, Unix Technologies

Automate command execution on MAC OS X/Unix Systems from Windows Systems remotely via SSH without prompting for Password everytime

It’s a fairly simple procedure to have auto SSH enabled to any of SSH supported system.  It all needs the system to have Public & Private RSA keys generated and configured between the hosting and connecting system.   On the System to which you want to SSH, you need to run through below sequence of commands: ssh-keygen -t rsa cd .ssh cat id_rsa.pub >> authorized_keys chmod 600 authorized_keys   On the system from where you want to remotely connect to the above system you need to download and install the Private Key so that whenever you attempt to SSH the […]

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