feat: e100e Ethernet driver, ramdisk reorganization, shell rewrite, web server/client, and more

programs/man/intro.1

@@ -19,26 +19,42 @@
 
         extern "C" void _start() { ... }
 
-    There is no argc/argv. Include <zenith/syscall.h> for the full
-    typed syscall API. Include <zenith/heap.h> for malloc/mfree.
+    There is no argc/argv. Use zenith::getargs() to retrieve any
+    arguments passed by the parent process. Include <zenith/syscall.h>
+    for the full typed syscall API.
 
     Build with:
 
         cd programs && make
 
-    The resulting ELF binary appears in programs/bin/.
+    The resulting ELF binary appears in programs/bin/os/.
+
+.SH RAMDISK LAYOUT
+    The boot ramdisk is mounted as drive 0 with the following
+    directory structure:
+
+        0:/os/          System binaries (shell, init, man, etc.)
+        0:/games/       Games (doom)
+        0:/man/         Manual pages
+        0:/www/         Web server content
+        0:/home/        User home directory
 
 .SH SHELL
-    The built-in shell is the primary way to interact with ZenithOS.
-    Type 'help' at the shell prompt for a list of commands. Use
-    'man shell' for detailed shell documentation.
+    The interactive shell is the primary way to interact with
+    ZenithOS. Commands are resolved by searching the PATH
+    directories (0:/os/, 0:/games/) for matching .elf binaries.
+    Type 'help' at the shell prompt for a list of commands.
+    Use 'man shell' for detailed shell documentation.
 
 .SH MAN PAGES
     The following man pages are available:
 
         intro(1)        This page
         shell(1)        Shell commands reference
+        init(1)         Init system
+        dhcp(1)         DHCP client
         man(1)          The man command itself
+        legal(7)        Copyright and legal information
         syscalls(2)     Overview of all syscalls
         spawn(2)        Process spawning
         file(2)         File I/O syscalls