Within a shell script, the shell expands $1 (a variable called a positional parameter; Sobell, page 475) to the first argument on the command line the script was called with. Write and execute a script named first that displays (sends to standard output) the first argument on the command line it was called with. Include the #! line and a comment. Remember to make the file executable.
What will be an ideal response?
$ cat first
#!/bin/bash
#
# This script sends its first argument to standard output
#
echo $1
$ ./first Hello
Hello
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