Very simple script
 

I use this command sometimes to quickly display an ip address of a host

host hostname | tail -c 15

Rather than typing this command in each time I thought about creating either an alias or a simple script.
For example the alias would be called gh so all I would need to do is type gh [I]hostname[I]

As simple as this sounds I dont know how to create/pass variables can any one help??

Try adding an entry into your .bashrc, in the alias section. alias gh="host <hostname> | tail -c 15".
After making the entry, give the command 'source .bashrc' to reload .bashrc and make the new alias active.

Sorry buddy that didnt work
syntax error near unexpected token '|'

in your .bashrc:Then in your shell will output its IP address.

Have you tried instead arrow up on the commmand line.
or
Cover 'host | tail -c 15' by holding down the left mouse button and relocate to the command line then press the center (wheel) button.

In a year I would forget what gh is if I don't add a full comment line in the script.