user@host:~/junctions$ bst shell callHello.bst -- /bin/sh callHello.sh

[--:--:--][        ][    main:core activity                 ] START   Loading elements
[00:00:00][        ][    main:core activity                 ] SUCCESS Loading elements
[--:--:--][        ][    main:core activity                 ] START   Resolving elements
[00:00:00][        ][    main:core activity                 ] SUCCESS Resolving elements
[--:--:--][        ][    main:core activity                 ] START   Resolving cached state
[00:00:00][        ][    main:core activity                 ] SUCCESS Resolving cached state
[--:--:--][        ][    main:callHello.bst                 ] START   Staging dependencies
[00:00:00][        ][    main:callHello.bst                 ] SUCCESS Staging dependencies
[--:--:--][        ][    main:callHello.bst                 ] START   Integrating sandbox
[00:00:00][        ][    main:callHello.bst                 ] SUCCESS Integrating sandbox
[--:--:--][        ][    main:callHello.bst                 ] STATUS  Running command

    /bin/sh callHello.sh

Calling hello:
Hello World!
This is amhello 1.0.