modify file content
- vi
check file content
- cat
shutdown default firewall
[root@A cluster]# service iptables stop
modify hostname
[root@A cluster]# vi /etc/sysconfig/network
- modify file content: HOSTNAME=[your ideal hostname]
[root@A cluster]# vi /etc/hosts
- add below as an example (mylinux as hostname)
192.168.1.23 mylinux
- reboot
[root@A cluster]# init 6 (or reboot) (reboot computer to take effect)
Delete Directory
[root@A cluster]# rm -fr [directory]
Copy through nodes
[root@A cluster]# scp root@B:[file(s)] [directory]
[root@A cluster]# scp [file(s)] root@B:[directory]
Check GCC Version
[root@A ~]gcc --version
Kill Threads
[root@A ~]killall [thread name]
Pack a directory
[root@A ~]tar -cvf [pack name] [directory]
Disk Space
[root@A ~]df -lh
compress a file or files
[root@localhost logs]# tar -zcvf /target-directory/target.tar.gz catalina.out