Commands

Here are important commands that you should be aware of:

• cat - input from stdin or a file and output to stdout or a file
• df - find out how much space is free on your disks
• du - find out how much space is used on your disks
• ethtool - is a network cable connected and which link does it have?
• fdisk - partition a hard disk
• file - find out the type of a file
• hwinfo - find out what harddisk, processor, graphics card and so on you have
• ls - list files
• scp - copy over the network
• ssh - call a program over the network on another computer
• which - where does a program lodge?