update df du

README.md

@@ -138,6 +138,7 @@
 	- [telnet](src/Linux/telnet.md)
 	- [iptables](src/Linux/iptables.md)
 	- [tar](src/Linux/tar.md)
+	- [df & du](src/Linux/df_du.md)
 9.  [Go](src/Go/README.md "golang")
 	- [gofmt vs go fmt](src/Go/gofmt.md)
 	- [Compiler Directives](src/Go/CompilerDirectives.md)

src/Linux/README.md

@@ -11,4 +11,5 @@
 - [netstat](netstat.md)
 - [telenet](telenet.md)
 - [iptables](iptables.md)
-- [tar](tar.md)
+- [tar](tar.md)
+- [df & du](df_du.md)

src/Linux/df_du.md

@@ -0,0 +1,40 @@
+## df & du
+- df 查看磁盘使用情况
+
+		[root@lcp0578 ~]# df -h
+		Filesystem      Size  Used Avail Use% Mounted on
+		/dev/vda1        40G   26G   13G  68% /
+		tmpfs           3.9G     0  3.9G   0% /dev/shm
+- du 查看文件大小
+
+		// 查看当前目录下所有文件大小
+		[root@iZ25l72tn16Z local]# du -bsh *
+		233M    aegis
+		899K    autoconf-2.13
+		590K    bin
+		2.6M    curl
+		4.0K    etc
+		8.3M    freetype
+		4.0K    games
+		237M    go
+		146K    include
+		6.6M    lib
+		4.0K    lib64
+		4.0K    libexec
+		33K     man
+		5.0G    mysql
+		13M     nginx
+		110M    oldphp20170721121220
+		112M    php
+		420K    pureftpd
+		16M     redis
+		4.0K    sbin
+		3.0M    share
+		4.0K    src
+		203M    wrk
+		1.5M    zend
+		// 查看某个目录或文件大小
+		[root@iZ25l72tn16Z local]# du -sh mysql/
+		5.1G    mysql/
+PS：
+	Gives you the apparent(-b) summarized(-s) size of all the files and directories in the current directory in human readable(-h) format