zabbix_get 找不到命令是因为没有安装上zabbix_get ,解决办法：
查看是否安装：
[root@zabbixserver ~]# rpm -qa | grep zabbix
zabbix-web-6.4.8-release2.el8.noarch
zabbix-server-mysql-6.4.8-release2.el8.x86_64
zabbix-release-6.4-1.el8.noarch
zabbix-web-mysql-6.4.8-release2.el8.noarch
zabbix-nginx-conf-6.4.8-release2.el8.noarch
zabbix-sql-scripts-6.4.8-release2.el8.noarch
zabbix-agent-6.4.8-release2.el8.x86_64
zabbix-web-deps-6.4.8-release2.el8.noarch
zabbix-selinux-policy-6.4.8-release2.el8.x86_64显示没有安装。
安装：
[root@zabbixserver ~]# rpm -qa | grep zabbix
zabbix-web-6.4.8-release2.el8.noarch
zabbix-server-mysql-6.4.8-release2.el8.x86_64
zabbix-release-6.4-1.el8.noarch
zabbix-web-mysql-6.4.8-release2.el8.noarch
zabbix-nginx-conf-6.4.8-release2.el8.noarch
zabbix-sql-scripts-6.4.8-release2.el8.noarch
zabbix-agent-6.4.8-release2.el8.x86_64
zabbix-web-deps-6.4.8-release2.el8.noarch
zabbix-selinux-policy-6.4.8-release2.el8.x86_64[root@zabbixserver ~]#yum list all |grep zabbix
zabbix-agent2.x86_64 6.4.8-release2.el8 zabbix
zabbix-agent2-plugin-mongodb.x86_64 6.4.8-release2.el8 zabbix
zabbix-agent2-plugin-postgresql.x86_64 6.4.8-release2.el8 zabbix
zabbix-apache-conf.noarch 6.4.8-release2.el8 zabbix
zabbix-get.x86_64 6.4.8-release2.el8 zabbix
zabbix-java-gateway.x86_64 6.4.8-release2.el8 zabbix
zabbix-js.x86_64 [root@zabbixserver ~]# yum install zabbix-get.x86_64 -