Linux material command

• free: for memory information
• uname: material information

see dedicated virtual FS such as : /dev, /proc...

Special pseudo drives

• /dev/null: black hole
• /dev/zero: returns zeros
• /dev/full: emulate a full hard drive

About linux kernel

The kernel gives a material abstraction layer to software layer.

About linux kernel modules

The linux kernel is monolithic but some modules can be loaded/unloaded such as driver

• lsmod : list kernel modules
• modprobe: load/unload/manage kernel modules