Web Terminal Shell Interface

An experimental text-only interface prototype exploring plain-text system navigation and command-line interactions over pure static HTML. This interface uses standard HTML form submission with server-side processing to simulate a terminal environment. No client-side JavaScript is required.

Terminal Interface

Type a command below and press Submit. The server processes the input and returns the result as a preformatted text block. Supported commands: help, status, ls, cat, date, uptime, whoami, clear.

Binary & Bus Systems Ltd. - Web Terminal v1.0
System: bbsys.net | Node: ws-01 | Uptime: 47d 12:33:08
Type 'help' for a list of available commands.

bbsys@ws-01:~$

Example Session Log

The following is a captured terminal session demonstrating all supported commands:

bbsys@ws-01:~$ help

  Binary & Bus Systems Ltd. - Web Terminal v1.0
  Available commands:

  help        Display this help message
  status      Show system status and resource usage
  ls          List files in current directory
  cat [file]  Display contents of a file
  date        Display current system date and time
  uptime      Display system uptime
  whoami      Display current user identity
  clear       Clear the terminal output
  exit        Disconnect from terminal session

bbsys@ws-01:~$ status

  System:     bbsys.net
  Node:       ws-01 (London, UK)
  Kernel:     HTML/3.2-compliant
  Uptime:     47 days, 12 hours, 33 minutes
  CPU Load:   0.02 (static file serving)
  Memory:     14.6 KB TCP budget enforced
  Disk:       /dev/sda1  2.1GB used of 8.0GB
  Network:    eth0  Up  100Mbps
  Processes:  0 active (no runtime execution)

bbsys@ws-01:~$ ls

  drwxr-xr-x  2026-07-24  index.html
  drwxr-xr-x  2026-07-24  doc/
  drwxr-xr-x  2026-07-24  repo/
  drwxr-xr-x  2026-07-24  specs/
  drwxr-xr-x  2026-07-24  labs/
  drwxr-xr-x  2026-07-24  Assets/
  -rw-r--r--  2026-07-24  404.html

bbsys@ws-01:~$ cat specs/benchmarks.html

  [File: 2,576 bytes]
  <!DOCTYPE html>
  <html lang="en">
  <head>
  <meta charset="utf-8">
  ...
  <title>System Load Time & HTML 3.2 Standards</title>
  ...

bbsys@ws-01:~$ date

  Sat Jul 25 14:22:07 UTC 2026

bbsys@ws-01:~$ uptime

  14:22:07 up 47 days, 12:33, 1 user, load average: 0.02, 0.01, 0.00

bbsys@ws-01:~$ whoami

  sysop@bbsys.net (uid=1000)

bbsys@ws-01:~$ exit

  Connection closed by remote host.

Implementation Notes

The terminal interface operates through standard HTML form submission. Each command is sent as an HTTP POST request to a CGI script or server-side endpoint that processes the input and returns a preformatted HTML response. No client-side JavaScript is used.

Server-side processing requirements:

A CGI-capable web server (Apache, nginx with fcgiwrap, or any POSIX-compliant HTTP daemon).
A POSIX shell script or equivalent that accepts the cmd POST parameter, validates it against the allowed command list, and returns the output wrapped in <pre> tags.
Input sanitisation to prevent shell injection. All input must be stripped of metacharacters before processing.

#!/bin/sh
# terminal.cgi - Minimal CGI terminal handler
# Accepts: cmd POST parameter
# Returns: HTML page with preformatted output

echo "Content-Type: text/html; charset=utf-8"
echo ""

CMD="${QUERY_STRING#cmd=}"
CMD=$(echo "$CMD" | sed 's/[^a-zA-Z0-9 .\/_-]//g')

case "$CMD" in
    help)
        echo "<pre>"
        echo "Binary & Bus Systems Ltd. - Web Terminal v1.0"
        echo "Available commands: help, status, ls, cat, date, uptime, whoami, clear, exit"
        echo "</pre>"
        ;;
    status)
        echo "<pre>"
        echo "System: bbsys.net"
        echo "Node: ws-01 (London, UK)"
        echo "Uptime: $(uptime -p)"
        echo "Load: $(cat /proc/loadavg | cut -d' ' -f1-3)"
        echo "</pre>"
        ;;
    ls)
        echo "<pre>"
        ls -la /var/www/html/ 2>&1
        echo "</pre>"
        ;;
    date)
        echo "<pre>$(date)</pre>"
        ;;
    uptime)
        echo "<pre>$(uptime)</pre>"
        ;;
    whoami)
        echo "<pre>sysop@bbsys.net (uid=$(id -u))</pre>"
        ;;
    *)
        echo "<pre>Error: unknown command '$CMD'. Type 'help' for available commands.</pre>"
        ;;
esac

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