mark一些最近用到的Linux命令
Linux版本是ubuntu16.04
查看/开启/关闭当前防火墙状态：inactive状态是防火墙关闭状态 active是开启状态。
ly@ubuntu:~$ sudo ufw enable
[sudo] password for ly:
Firewall is active and enabled on system startup
ly@ubuntu:~$ sudo ufw disable
Firewall stopped and disabled on system startup
ly@ubuntu:~$ sudo ufw status
Status: inactive
查看Linux的IP地址：192.*.*.*为IP地址
ly@ubuntu:~$ ifconfig ens33 Link encap:Ethernet HWaddr 00:0c:29:94:ab:37 inet addr:192.*.*.* Bcast:192.168.137.255 Mask:255.255.255.0 inet6 addr: fe80::c62b:728f:9725:e746/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:20341 errors:0 dropped:0 overruns:0 frame:0 TX packets:6490 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:13614793 (13.6 MB) TX bytes:492034 (492.0 KB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:1689 errors:0 dropped:0 overruns:0 frame:0 TX packets:1689 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1 RX bytes:143935 (143.9 KB) TX bytes:143935 (143.9 KB)
清理系统日志：
ly@ubuntu:~$ sudo -i [sudo] password for ly: root@ubuntu:~# echo > /var/log/syslog root@ubuntu:~# echo > /var/log/kern.log
获取root权限，打开root文件夹
ly@ubuntu:~$ sudo nautilus
apparmor相关
重启服务：
ly@ubuntu:~$ sudo /etc/init.d/apparmor restart
grep字符串匹配：
ly@ubuntu:~/Desktop/vim-7.4/vim74$ grep -rwn syntax.vim //精准查找当前目录下的systax.vim字符串 runtime/doc/version5.txt:542: "syntax.vim" for selecting the syntax colors. Often set
原文：https://www.cnblogs.com/lyeeer/p/11044210.html