GregOS Command Reference
========================

  help       Show this help message
  ls         List directory contents
  cd         Change directory (use .. to go up)
  pwd        Print working directory
  cat        Display file contents
  open       Open file or current folder in browser
  whoami     Display system info
  history    Show command history
  clear      Clear terminal
  reboot     Reboot system
  rm         Remove files
  man        View manual pages
  sudo       Execute as superuser
  status     Show system status
  post       power-on self-test results
  info       device identification
  log        station event log
  rxbuf      read rx buffer
  date       Display current date and time
  echo       Print arguments to output
  uname      Print system information
  wc         Word, line, and byte count
  head       Output the first part of files
  grep       Search file contents for a pattern
  uptime     Show system uptime
  hostname   Show system hostname
  id         Display user identity
  ps         Report process status
  df         Report filesystem disk space
  free       Display memory usage
  env        Display environment variables
  pkg        Package manager
  mount      Mount a filesystem
  w          Show who is logged on
  finger     User information lookup
  last       Show last logins
  dmesg      Print kernel messages
  decode     Hex/base64 decoder
  rot13      ROT13 cipher
  freq       Letter frequency analysis
  entropy    Shannon entropy calculator
  crc        CRC32 checksum
  strings    Extract printable strings
  su         Switch user
  mail       Read mail

# Man pages: curl gregoryalan.com/man/<command>