traceroute clear history export crontab uname env printenv Conclusion 4 Preface The Linux Commands Handbook follows the 80/20 rule: learn in 20% of the time the 80% of a topic. I find this approach Linux and its commands. It focuses on the small core commands that you will use the 80% or 90% of the time, trying to simplify the usage of the more complex ones. All those commands work on Linux, and institutions, starting from the 70's The macOS terminal gives you access to the same exact commands I'll describe in the rest of this handbook. Microsoft has an official Windows Subsystem for Linux

and institutions, starting from the 70's The macOS terminal gives you access to the same exact commands I'll describe in the rest of this handbook. Microsoft has an official Windows Subsystem for Linux work with the underlying operating system. It allows you to execute operations using text and commands, and it provides users advanced features like being able to create scripts. 7 This is important: we'll see in detail the most common commands you will use. 2. man The first command I want to introduce is a command that will help you understand all the other commands. 8 Every time I don't know how

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality for executing operations within an action; a sequence of sending notifications/executing remote commands. media - a means of delivering notifications; delivery channel. notification - a message about

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality authentication has now gained a dedicated tab in the Authentication form in which you may define whether to send non- authenticated users to the Zabbix login page or to the HTTP login page, specify case-sensit

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality agent 2 configuration files. The parameter specifies a custom directory to execute UserParameter commands from. If UserParameterDir is present, the agent will change its working directory to the one specified

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality click on Test in the last column. A testing window will open where you can enter a Send to recipient address and send a test message subject and body by clicking on Test. 15 Test success or failure

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality supported by location. Updated macros • {HOST.ID} is now supported in trigger-based notifications and commands, problem update notifications and internal notifi- cations. Databases Support of IBM DB2 dropped

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality scripts In previous Zabbix versions three hard-coded parameters were passed to custom alert scripts - Send to, Subject and Message. Now users can define their own command-line parameters for the script in

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. IT services section details how to use Zabbix for a high-level notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality fields. 7 What’s new in Zabbix 5.4.2 Media types In media types, the maximum number of attempts to send an alert has been increased from 10 to 100; the maximum attempt interval has been increased from

setting up hosts to getting essential data to viewing data to configuring notifications and remote commands to be executed in case of problems. Service monitoring section details how to use Zabbix for a notifications can be made meaningful and helpful using macro variables • automatic actions include remote commands Real-time graphing • monitored items are immediately graphed using the built-in graphing functionality script during execution. To enable manual user input: • use the {MANUALINPUT} macro in the script (commands, script, script parameter) where required; or in the URL field of URL scripts; • in advanced script