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How to write and run a simple Shell script?

Posted on 2006-07-06
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Can someone give an example with illustration as to How to write and run a simple Shell script?

Can someone explain how the $ (?) works ?

Thanks.
_Esam
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Question by:_Esam
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8 Comments
 
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Accepted Solution

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shmukler earned 375 total points
ID: 17051182
first line should say what shell it is.

for bash type

#/bin/bash

$ with a number gives you number of your argument. $1 is for first argument in the list. you could do echo $1 to print it

#/bin/bash
echo $1 world!

will print the first argument then world!

make sure the script is executable by running $chmod +x ${youfilename}

now you can try:

./${yourscript} hello

and you should see:
hello world!
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Author Comment

by:_Esam
ID: 17051285
Well .. thax...
I will be using Korn Shell on HP-UX

What is the difference between sh and ksh ???

>make sure the script is executable by running $chmod +x ${youfilename}
Could you please explain how I do that?

Thax
_Esam
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Author Comment

by:_Esam
ID: 17051358
When I try this: > make sure the script is executable by running $chmod +x ${youfilename}

It complaints that parameter not set :

This is what I have in the script:

#!/bin/ksh
echo $1 world



And I saved it as hello

Thax
_Esam.
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Author Comment

by:_Esam
ID: 17052608
Come on !!
What's wrong here at EE ???

Ppl are so ....?

_Esam
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LVL 51

Expert Comment

by:ahoffmann
ID: 17052758
> What is the difference between sh and ksh ???
man sh
man ksh

from your shell promt do:

echo '#!/bin/ksh' >hello
echo 'echo $1 world' >>hello
chmod +x hello
./hello heureca

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Author Comment

by:_Esam
ID: 17052874
Sometimes  there are some assumptions the Experts are giving away all the solutions for kids' homework :)
So, they don't quite answer the questions ...........

Why not I man allthecommands and find out by myself all the shell stuffs :) DUH

I am real ..............sad to see this kinda .........

_Esam...
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LVL 51

Expert Comment

by:ahoffmann
ID: 17052934
> Why not I man ..

.. why do we not post the answer to the question about the difference? 'cause its realy tooooooo much to fit in this forum, you can by countless books which explain in detail what the difference is, or simply STFW and you find even more texts than written in books. Which one should be posted her?
Or we (in particular me) could give a (sarcastic) simple answer to a simple question:
 Q: What is the difference between sh and ksh ???
 A: k

Anyway, you initial question have been answerd, haven't it?
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Author Comment

by:_Esam
ID: 17052986
>Q: What is the difference between sh and ksh ???
 A: k

KOOOOOOOOOOOL
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