Show using awk without data via STDIN

This is useful for those times you want to just do something in awk, -
on-the-fly, without having to rely on its standard input (STDIN).

It's especially handy when you want to perform floating-point
arithmetic, if you're not a shell like ZSH which does support it.

sheets/awk

@@ -15,3 +15,6 @@ awk -v RS='' '/42B/' file
 
 # display only first column from multi-column text
 echo "first-column  second-column  third-column" | awk '{print $1}'
+
+# Use awk solo; without the need for something via STDIN.
+awk BEGIN'{printf("Example text.\n")}'