Malcolm's Tech Tips

Here are a few VI commands that I use allot and find very useful.
Once in command mode (by pressing ESC) enter:

:wq
To Save or Write and document and quit VI

:w
To save the document

:q!
To quite the document WITHOUT saving.

J
Capital J will join next line down on to the end of your current line.

G
Capital Go will take you [...]

Here is a simple example of how to use a case and foreach statement in the C shell.

#!/usr/bin/csh

foreach SERVER (`cat hosts.list`)
switch ($SERVER)
case “server1″:
case “server2″:
echo “NOT shutting down ” $SERVER
breaksw
default:
echo Shutting down $SERVER…
/usr/bin/ssh $SERVER init 5
endsw
end

This script will shutdown all servers listed in the file hosts.list, except [...]

You first need to edit/create a .bash_profile file in your home directory. Note the . at the start of the filename.
Put the following code into the file.

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
BASH_ENV=$HOME/.bashrc

You also need to create a .bashrc file. Again in your home folder and again, note the . [...]