Creating Custom Commands in Unix/Linux - Linux Together
GitHub - arunkumaraqm/Custom-Unix-Shell: Custom Shell Made for Operating Systems Project
The Unix Programming Environment prentice-hall Software - Etsy Sweden
Do custom small unix like operating system development by Tanmaykumarghos | Fiverr
Custom commands for linux terminal - GeeksforGeeks
GitHub - rahulbahal7/custom-shell: An implementation of custom unix-like shell in C with capabilities to execute commands, piping, IO redirection, executing scripts and handling of background execution of processes.
Jordan Unix for Dummies Quick Reference - (For Dummies: Quick Reference (Computers)) 4th Edition by Margaret Levine Young & John R Levine (Paperback) | Connecticut Post Mall
Not-a-Linux distro review: SerenityOS is a Unix-y love letter to the '90s | Ars Technica