env: update

pages/common/env.md

@@ -1,19 +1,23 @@
 # env
 
-> Show the environment or run a program in a modified environment
+> Show the environment or run a program in a modified environment.
 
-- Show the environment
+- Show the environment:
 
 `env`
 
-- Clear the environment and run a program
+- Run a program. Often used in scripts after the shebang (#!) for looking up the path to the program.
+
+`env {{program}}`
+
+- Clear the environment and run a program:
 
 `env -i {{program}}`
 
-- Remove variable from the environment and run a program
+- Remove variable from the environment and run a program:
 
 `env -u {{variable}} {{program}}`
 
-- Set a variable and run a program
+- Set a variable and run a program:
 
 `env {{variable}}={{value}} {{program}}`