Just type the following in Gnome Terminal:

sudo apt-get install fortunes-ubuntu-server -y

Now execute below command several times to get really useful Ubuntu command line tips:

ubuntu-server-tip

Here are some examples:

Use lsof to find out which process has open handles for a file. ‘lsof +D /path’ will find all processes for the given path. This is useful for unmounting media.

If you know you typed a command or password wrong, you can use ctrl + u to delete the whole line or ctrl + w to delete just a word.

If you are using a PostgreSQL database, use “ptop” to monitor real time usage. Btw, export of PostgreSQL to file is easy.

Browse the command line history with ctrl-r and then type a few characters that you know are part of the command you are looking for.

A for loop in bash syntax: ‘for i in * ; do echo $i ; done’.

To make a backup without typing the full path twice: ‘cp /long/path/to/file/name{,.orig}’ to create a copy with the suffix .orig