This post describes to install and configure Nagios Client on Ubuntu system, You need to updates necessary packages, install libtool, openssl, libssl dev.

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MongoDB service could not start or if you may get any errors, you might read to mongo log file using tail or less command.

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The Linux provides default security controlled by firewall called Iptables, can handles filtering for IPv4 and ip6tables called IPV6. Type the following command as root user.

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If you have a script or a command to execute in another user, assume that the Hadoop command to execute in Hadoop user from the root, use the below commands,

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wget command is very helpful to download the files by remotely, many functionalities available in wget command. On this post describe to download the entire website from the server.

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The previous post we had discussed removes multiple files from a Git repository and which has been deleted already. Now, if you want to remove a specific file from a Git use below commands,

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When you are using the git repository and if you are deleted the files from the git in the local system, it can not remove from reports. So you can use the command

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