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Install Grafana on Ubuntu 20.04 - Step by Step Process ?
This article covers how to install Grafana on Ubuntu OS using two methods: using the APT repository and the .deb package. Grafana is multi-platform open-source analytics and interactive visualization web application that integrates with complex data from sources like Prometheus, InfluxDB, Graphite, and ElasticSearch. It provides charts, graphs, and alerts for the web when connected to supported data sources. It is expandable through a plug-in system.
Features of Grafana:
- Data Visualization: Allows for fast and flexible visualization with many options and settings.
- Dynamic Dashboards: Provides the ability to create dynamic and reusable panels with templated variables.
- Metrics Exploration: Explore your data with ad-hoc queries and dynamic drill-down by splitting the view and comparing different time ranges and sources.
- Data Logs: Provides tremendous opportunities to use data metrics in a log with labels and filters saved, which can be studied, viewed, and broadcasted.
- Extensive Alert Capabilities: Visually define alert rules for your most important metrics. Grafana will continuously evaluate and send notifications to systems such as Slack, PagerDuty, VictorOps, and OpsGenie.
- Mixed Data Sources: Mix different data sources on the same graph and for each query.
Usermod Linux Command with Examples
This article covers different use cases of using the usermod command. The usermod command in Linux is used to manage user properties at command line. The syntax of the usermod command is following:
$ usermod [option] [argument] username
Use pkill Command in Linux System - An overview ?
This article covers how to use the pkill command in Linux. pkill is basicity a wrapper around the pgrep program that only prints a list of matching processes.
The syntax for the pkill command is as follows:
$ pkill [OPTIONS] <PATTERN>The matching <PATTERN> is specified using extended regular expressions.
For more information about pkill command, visit the pkill man page or type man pkill in your terminal.
Other Linux commands:
- ps — Report the status of a process or processes.
- killall — Kill processes by name.
- kill — Send a signal to a process, affecting its behavior or killing it.
Rmmod Command in Linux - An Overview ?
This article covers the process of removing modules by using rmmod from the Linux kernel. In fact, rmmod is a simple program which removes (unloads) a module from the Linux kernel. In most cases, you will want to use modprobe with the -r option instead, as it is more robust and handles dependencies for you.
Important Linux System Commands:
- depmod — Generate a list of kernel module dependencies and associated map files.
- insmod — Insert a module into the Linux kernel.
- lsmod — Show the status of Linux kernel modules.
- modinfo — Show information about a Linux kernel module.
- modprobe — Add and remove modules from the Linux kernel.
Top 6 Best, Free PDF Readers in Ubuntu / Debian Linux
This article covers the best PDF Viewers you can install on your Ubuntu / Debian Linux system.
PDF viewer list on Ubuntu 20.04 Focal Fossa Linux:
- Evince PDF Viewer.
- Okular PDF Viewer.
- Atril PDF Viewer.
- Adobe Reader PDF Viewer.
- Zathura PDF viewer.
- GNU gv PDF Viewer.
Okular is a default PDF viewer on Ubuntu 20.04 KDE Plasma Desktop. To install Okular PDF Viewer, simply run the command:
$ sudo apt install okular
Rename Files and Directories in Ubuntu 20.04 - How to do it ?
This article covers different methods to Rename Files and Directories Using Linux Terminal. We can rename files and directories with rename and mv commands in the Linux Terminal. The mv command can only rename one file at a time, but the rename command can rename multiple files simultaneously.
How to Rename Files and Directories Using the mv Command ?
The mv command can rename files and directories. It is also used to move files and directories from one location to another.
Syntax of mv Command:
$ mv [OPTIONS] source destinationThe source can be one or more files or directories, and the destination is always a single file or directory.
