The shell puts the space separated values from the command line in variables $0 .. $9 where $0 is the name of the current script. Can handle up to 9 parameters (excluding the script itself) $10 would be $1 followed by a 0, but we can write ${10} in our script which will be the 10th command line parameter.

examples/script/command_line.sh
echo 0: $0
echo 1: $1
echo 2: $2

$ ./examples/script/command_line.sh Foo Bar wins
0: ./examples/script/command_line.sh
1: Foo
2: Bar
$ ./examples/script/command_line.sh "Foo Bar" wins
0: ./examples/script/command_line.sh
1: Foo Bar
2: wins
$ ./examples/script/command_line.sh Foo 
0: ./examples/script/command_line.sh
1: Foo
2: