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+# chmem
+
+> Modify the state of memory blocks (online or offline) in a Linux system.
+> Typically used in virtualized environments to manage memory hotplug.
+> More information: <https://manned.org/chmem>.
+
+- Set a memory block offline:
+
+`sudo chmem {{[-b|--block]}} {{[-d|--disable]}} {{block_number}}`
+
+- Set a memory block online:
+
+`sudo chmem {{[-b|--block]}} {{[-e|--enable]}} {{block_number}}`
+
+- Set a memory range offline using hexadecimal addresses:
+
+`sudo chmem {{[-d|--disable]}} 0x{{start_address}}-0x{{end_address}}`
+
+- Set a memory range online using hexadecimal addresses:
+
+`sudo chmem {{[-e|--enable]}} 0x{{start_address}}-0x{{end_address}}`
+
+- Set memory online and assign it to a specific zone (e.g., Movable):
+
+`sudo chmem {{[-e|--enable]}} 0x{{start_address}} {{[-z|--zone]}} {{Movable}}`
+
+- Display help:
+
+`chmem {{[-h|--help]}}`