Basic ObjectScript not working in Linux Command Line

I’m a complete novice with ObjectScript.

I’m trying to write some Object Script directly into command line interface on Linux using some examples on the internet

 

sudo -u irisowner iris session SCRTC

Username: superuser

Password: ************

AUMHSCRTC:USER>a SET x=1

AUMHSCRTC:USER> WHILE x<10 {

AUMHSCRTC:USER> WRITE !," Looping",x

AUMHSCRTC:USER> SET x=x+1

AUMHSCRTC:USER> }

AUMHSCRTC:USER> WRITE !,"DONE"

AUMHSCRTC:USER>do a

 Looping1

 Looping2

 Looping3

 Looping4

 Looping5

 Looping6

 Looping7

 Looping8

 Looping9

DONE

That seems to work!

 

How if I put these commands into a file:

cat > /tmp/a.scr

superuser

xyz

a SET x=1

 WHILE x<10 {

  WRITE !," Looping",x

  SET x=x+1

 }

 WRITE !,"DONE"

do a

 

Then:

cat /tmp/a.scr|sudo -u irisowner iris session SCRTC

 

DOES NOT work.

 

Why?

 

Also “routine” or “class” code in Wikipedia - https://en.wikipedia.org/wiki/Cach%C3%A9_ObjectScript these examples do not work either directly or in a file:

hello // hello world routine

    write "hello world"

end quit  // end

DO ^hello

 

AND

 

Class User.Helloworld

{

  ClassMethod HelloWorld()

  {

    // Write to console

    Write "Hello World"

    Quit

  }

}

DO ##class(User.Helloworld).HelloWorld()

Why?

Thanks for any help