pip install todotxt-machine

git clone https://github.com/AnthonyDiGirolamo/todotxt-machine.git
cd todotxt-machine
./todotxt-machine.py

usage: todotxt-machine.py [-h] [-f FILE] [--readline-editing-mode {emacs,vi}]

Interactive terminal interface for todo.txt files.

optional arguments:
  -h, --help            show this help message and exit
  -f FILE, --file FILE  path to your todo.txt file
                        default:~/Dropbox/todo/todo.txt
  --readline-editing-mode {emacs,vi}
                        set readline editing-mode

?            - display this help message
q, ctrl-c    - quit

j, down      - move selection down
k, up        - move selection up
g, page up   - move selection to the top item
G, page down - move selection to the bottom item

p            - select the next project
P            - select the previous project
c            - select the next context
C            - select the previous context
s            - switch sorting method

/            - start search
ctrl-l       - clear search

enter        - end search
ctrl-c       - cancel search

x            - complete / un-complete selected todo item
n            - add a new todo to the end of the list
o            - add a todo after the selected todo
O            - add a todo before the selected todo
enter, A, e  - edit the selected todo
D            - delete the selected todo

ctrl-c       - cancel editing a todo
tab          - tab complete @contexts and +Projects