Getting arguments directly from the command shell can be beneficial in a number of cases.

test.sh

#!/bin/bash
echo "Total arguments : $#"
echo "First Argument = $1"
echo "Second Argument = $2"
</code>
 
Run this script with two additional parameters after its name.
 
<code bash>
./test.sh Hello Peter
</code>
 
<WRAP info>
**NOTE:**  **$1** is used for accessing the first argument, **$2** for the second, and so on.
 
The **$#** is used for getting the total number of arguments.
 
</WRAP>
 
----
 
===== Getting Arguments with Names =====
 
The below example shows how to get command-line arguments with their names.
 
<file bash test.sh>
#!/bin/bash
 
for arg in "$@"
do
index=$(echo $arg | cut -f1 -d=)
val=$(echo $arg | cut -f2 -d=)
 
case $index in
X) x=$val;;
Y) y=$val;;
*)
esac
 
done
 
((result=x+y))
 
echo "X+Y=$result"

Run this:

./test.sh X=44 Y=100

returns

X+Y=144