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How to display process statistics

Use system performance tools for Linux to display process statistics.

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How to manage systemd services remotely

Manage systemd services remotely over SSH protocol.

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How to edit file in-place

Use sponge utility to read standard input and safely write it out to the same file.

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SysOps

How to fix device excluded by a filter

Fix “device excluded by a filter” LVM error.

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DevOps

How to install Nexus Repository Manager 3

Install Nexus Repository Manager (NXRM) 3.

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SysOps

How to restart service on every configuration change

Monitor file system events to restart service on every configuration change.

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How to store and visualize playbook events

Use JUnit callback plugin to store and Allure Framework to visualize ansible playbook events.

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How to pretty print decimal or binary numbers

Use numfmt command-line utility which is a part of the standard GNU Core Utilities to pretty print decimal or binary numbers.

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SysOps

How to log specific Varnish requests

Use varnishlog to log specific Varnish requests.

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SysOps

How to use virtual memory filesystem to store Varnish Shared memory Log

Varnish Shared memory Log can put a major strain on the disk (I/O write operations). The solution is to store it on the virtual memory filesystem.