What is the use of command set -- and set - variable?

UNIX HP-UX
1

Hi,

I am using hp unix

i want to know the use of the following commands

set --
set - variable

thanks

2

HP-UX is an Operating System.

What version of HP-UX are you running?
uname -sr

What Shell are you using?
echo "${SHELL}"

The "set" command is described in the "man" page for your Shell.
If you have a modern HP-UX with the default Posix Shell see "man sh-posix".

3

unix version HP-UX B.11.23
shell ==> sh

4

this man sh-posix" has more details.. i need some example

5 
From "man sh-posix".
 
          -    Turn off -x and -v options and stop examining arguments for
                options.

           --   Do not change any of the options; useful in setting
                parameter 1 to a value beginning with -.  If no arguments
                follow this option, the positional parameters are unset.


Examples

set -x
# Script lines we want to debug
... lots of script lines ...
# Turn off debug
set -

# scriptname.sh
echo "Value is: $1"
set --
# Unset positional parameters $1 $2 etc.
echo "Value is: $1"

./scriptname,sh param1
Value is: param1
Value is: