how to write a bash script like the ones used in init.d?

Question

I have to write a bash script that makes lot of things. I'd like to print messages as nice as init scripts do. For example:

 Doing A... [OK]  
 Doing B... [ERROR]  
 ....

Do you know any way to make this?

Thanks in advance

Answer 1

On all my Linux boxes, the code to do that is in the file:

/etc/init.d/functions

If you include that file (. /etc/init.d/functions) and then run your code doing this:

action /path/to/prog args

you will get the functionality you want.