Use $(prompter) as a component of your PS1 in the shell. It will print your current working directory, styled to be helpful:

• prompter colorizes symlinks, underlines mountpoints, and highlights open write permissions
• prompter truncates path components as needed to keep the prompt short relative to your terminal width

Usage of ./prompter:
  -size-buffer int
      how much extra space to leave between the end of the prompt and the middle of the screen (default 10)
  -bash-readline-hack
      Wraps escape codes in \x01 and \x02, so that GNU Readline understands that they have no width (default true)
  -default int
      style for normal directories (ANSI escape codes) (default 34)
  -open-write int
      style for open write permissions (default 42)
  -symlink int
      style for symlinks (default 36)

Possible next features:

• Identify read-only filesystems, network filesystems, FUSE
• Identify slow filesystems and full filesystems
• Preserve characters needed for tab-completion when truncating directories
• Get default styles from LSCOLORS, rather than hardcoding the common ones