Linux - NetCat

删除GNU Netcat

[zhangsan@node2 ~]$ whereis nc
nc: /usr/local/bin/nc

[zhangsan@node2 ~]$ nc --version
netcat (The GNU Netcat) 0.7.1

[root@node2 zhangsan]# rm -f /usr/local/bin/nc

安装nmap NetCat

[root@node1 hadoop]# yum install epel-release -y

[root@node1 hadoop]#  yum install nc -y

[root@node1 zhangsan]# nc --version
Ncat: Version 7.50 ( https://nmap.org/ncat )

[root@node1 zhangsan]# nc -lk 9999