aspell

Interactive spell checker. More information: http://aspell.net/.

• Spell check a single file:
  aspell check {{path/to/file}}
• List misspelled words from stdin:
  cat {{path/to/file}} | aspell list
• Show available dictionary languages:
  aspell dicts
• Run aspell with a different language (takes two-letter ISO 639 language code):
  aspell --lang={{cs}}
• List misspelled words from stdin and ignore words from personal word list:
  cat {{path/to/file}} | aspell --personal={{personal-word-list.pws}} list