ENH: Backup of Zabbix 1.9.x / 2.0.0, removed unnecessary use of variables (DATEBIN etc) for commands that use to be in $PATH ...

WebHook script with minimalistic information output. Host name from Zabbix is used in field "username" of webhook. It causes grouping of alerts from the same monitored host. Tested on Zabbix 5.0 and 6 ...

Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...