UNIX for Dummies Questions & Answers

function sample_function {
VAR1=${1}
VAR2=${2}
}

sample_function VAR_1 VAR_2

bash-3.2$ sample_text='hello world'
bash-3.2$ function sample_function {
> echo $sample_text
> }
bash-3.2$ sample_function 
hello world

s()
{
    echo "hello $1"
}

s 'greetings from unix forum'
s "more testing"
s 4 3 2 1
# this last one  shows "hello 1"  because 1 is parm #1
s 1 2 3 4
s "1234"
s " 1 2 3"  4

$ function sample_function { echo $sample_text; }
$ sample_text='hello world'
$ sample_function
hello world
$ sample_text='goodbye world'
$ sample_function
goodbye world
$ function sample_function { sample_text='hello again'; }
$ sample_function
$ echo $sample_text
hello again
$

$ set param1 param2
$ echo $1 $2
param1 param2
$ function sample_function { echo $1 $2; }
$ sample_function

$ sample_function $1 $2
param1 param2
$