- netstat: 显示各种网络相关信息,如网络连接,路由表,接口状态(interface statistics), masquerade连接, 多播(Multicast memberships)
[krystal@localhost ~]$ netstat -plte |grep node (Not all processes could be identified, non-owned process info will not be shown, you would have to be root to see it all.) Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program name tcp 12 0 0.0.0.0:hbci 0.0.0.0:* LISTEN krystal 72645 6042/node
- pmap: 用进程名字的某个关键字查看其内存使用情况
[krystal@localhost ~]$ pmap -x `ps aux|grep <keyword>|grep -v grep |awk '{print $2}'`
- hostname, ifconfig 查看IP地址
[krystal@localhost ~]$ hostname -i 127.0.0.1 [krystal@localhost ~]$ hostname -I 172.18.7.187 172.18.58.176 [krystal@localhost ~]$ type -a ifconfig ifconfig is /usr/sbin/ifconfig ifconfig is /sbin/ifconfig [krystal@localhost ~]$ ifconfig cscotun0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1418 inet 172.18.58.176 netmask 255.255.255.0 destination 172.18.58.176 inet6 fe80::3269:22d7:49c8:bb2d prefixlen 128 scopeid 0x20<link> unspec 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 txqueuelen 500 (UNSPEC) RX packets 2546400 bytes 3388984490 (3.1 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1548200 bytes 110027828 (104.9 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 172.18.7.187 netmask 255.255.255.128 broadcast 172.18.7.255 inet6 fe80::b283:feff:fe71:9c84 prefixlen 64 scopeid 0x20<link> ether b0:83:fe:71:9c:84 txqueuelen 1000 (Ethernet) RX packets 2640036 bytes 3638323089 (3.3 GiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 1571692 bytes 265345047 (253.0 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10<host> loop txqueuelen 0 (Local Loopback) RX packets 788917 bytes 394579953 (376.3 MiB) RX errors 0 dropped 0 overruns 0 frame 0 TX packets 788917 bytes 394579953 (376.3 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
4. ip 查看网络信息
[krystal@localhost ~]$ ip addr show 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether b0:83:fe:71:9c:84 brd ff:ff:ff:ff:ff:ff inet 172.18.7.187/25 brd 172.18.7.255 scope global dynamic enp2s0 valid_lft 43060sec preferred_lft 43060sec inet6 fe80::b283:feff:fe71:9c84/64 scope link valid_lft forever preferred_lft forever 4: cscotun0: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1418 qdisc pfifo_fast state UNKNOWN group default qlen 500 link/none inet 172.18.58.176/24 brd 172.18.58.255 scope global cscotun0 valid_lft forever preferred_lft forever inet6 fe80::3269:22d7:49c8:bb2d/128 scope link valid_lft forever preferred_lft forever [krystal@localhost ~]$ ip addr show enp2s0 2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000 link/ether b0:83:fe:71:9c:84 brd ff:ff:ff:ff:ff:ff inet 172.18.7.187/25 brd 172.18.7.255 scope global dynamic enp2s0 valid_lft 43052sec preferred_lft 43052sec inet6 fe80::b283:feff:fe71:9c84/64 scope link valid_lft forever preferred_lft forever