add free.md

2014-03-05 14:47:01 +08:00
parent 22f033842e
commit e0d17870d4
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+# free
+
+> Display amount of free and used memory in the system
+
+- Display system memory
+
+`free`
+
+- Display memory in Bytes/KB/MB/GB
+
+`free {{-b/-k/-m/-g}}`
+
+- Display memory in human readable units
+
+`free -h`
+
+- Continuous monitor memory (refresh every X seconds)
+
+`free -s {{X}}`