user@host:~/strict-mode$ bst --no-strict shell hello-dynamic.bst -- hello

[--:--:--][        ][    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   Initializing remote caches
[00:00:00][        ][    main:core activity                 ] SUCCESS Initializing remote caches
[--:--:--][        ][    main:core activity                 ] START   Query cache
[00:00:00][        ][    main:core activity                 ] SUCCESS Query cache
[--:--:--][4aacf94b][    main:hello-dynamic.bst             ] START   Staging dependencies
[00:00:00][4aacf94b][    main:hello-dynamic.bst             ] SUCCESS Staging dependencies
[--:--:--][4aacf94b][    main:hello-dynamic.bst             ] START   Integrating sandbox
[--:--:--][        ][    main:hello-dynamic.bst             ] START   Running commands

    ldconfig "/usr/lib"

+ sh -e -c ldconfig "/usr/lib"
[00:00:00][        ][    main:hello-dynamic.bst             ] SUCCESS Running commands
[00:00:00][4aacf94b][    main:hello-dynamic.bst             ] SUCCESS Integrating sandbox
[--:--:--][4aacf94b][    main:hello-dynamic.bst             ] STATUS  Running command

    hello

Good morning stranger