strsep() not strtok() suggested

processes-shell/README.md

@@ -88,8 +88,7 @@ In either mode, if you hit the end-of-file marker (EOF), you should call
 `exit(0)` and exit gracefully. 
 
 To parse the input line into constituent pieces, you might want to use
-`strtok()` (or, if doing nested tokenization, use `strtok_r()`). Read the man
-page (carefully) for more details.
+`strsep()`. Read the man page (carefully) for more details.
 
 To execute commands, look into `fork()`, `exec()`, and `wait()/waitpid()`.
 See the man pages for these functions, and also read the relevant [book