OP: if you truly want to build it, then you also have to build your own interpreters for the shell language.<p>And then you have to build your own compilers to run the interpreter code.<p>Then you have to build your own linkers for the compilers to use.<p>And your own parsers.<p>And your own lexers.<p>And your own libraries.<p>And your own assemblers.<p>And your own machine code interpreters.<p>And your own OSes.<p>And your own hardware.<p>And your own everything else.<p>Once you’ve done all that, you can then build your own DevOps tooling for developing and deploying your code.