Shell Programming and Scripting

Hello,

I begin to write my first shell script, but I am totally lost, hope you can help me.

I'd like to write a script with some conditions and multiples usages:

Code:

./myscript.sh -i <host>

or

Code:

./myscript.sh -e <host>

Have you some suggestion, because I am really lost, I try to do something with an echo and a read answer but it is not good.

If you have a good exemple I can adapt it's a good thing for me too.

With no indication of what conditions you are talking about, no indication of what you want the -i and -e options to do, and no indication of what you want the script to do with or without options; it is hard to make any useful suggestions.

Take a look at this post, where it shows parameters being passed.
https://www.unix.com/shell-programmin...rs-spaces.html

Francesco, can you briefly explain what is your requirement?

you just need to search for

Code:

CASE

statement on google. I hope this is what you are looking for.

I must admit I am not very clear, please excuse me.

myscript.sh has differents usage

Code:

./myscript.sh -i <host>

==> will lauch an apt-get update on <$host>

Code:

./myscript.sh -e <host>

==> will launch an apt-get remove on <$host>

I have 6 hosts=

Code:

HOST='host1 host2 host3 host4 host5 host6'

I'd like to use fonction to execute the command, but all the exemple I saw are not very easy for me.

I'd like to have an usage:

Code:

./myscript.sh
Usage: myscript.sh {install -i host|remove -e host|}

Regards,

Code:

if [ "$#" -eq 0 ]
then
        echo "Usage: myscript.sh {install -i host|remove -e host|}"
        exit 1
fi