satin-shell is a simple interactive shell created for educational purposes. Due to lack of advanced features, it is meant to get replaced as default interpreter.
Simple usage example of satin-shell:
satin-shell 0.1
satin-0.1$ OP_1 OP_1 OP_EQUALVERIFY
Success
satin-0.1$ op_1 Op_1 Op_equalVerIfy
Success
satin-0.1$ 1 1 equalverify
Success
satin-0.1$ 1 2 equalverify
Script failed an OP_EQUALVERIFY operation
satin-0.1$ 0x12abef 0x5632 equalverify
Script failed an OP_EQUALVERIFY operation
satin-0.1$ 0x123456 dup equalverify
Success
satin-0.1$
Looking at the few lines of satin-shell code illustrates the UNIX principles of simple building blocks.