From Indie IT Wiki
How To Tweet Via The Command Line
sudo apt-get install ruby1.9.1-examples ri1.9.1 graphviz ruby1.9.1-dev sudo gem install t sudo mv /usr/local/bin/t /usr/local/bin/tweet tweet authorize tweet accounts tweet help tweet update "This is a test from my Linux computer via the command line."
Thanks - http://sferik.github.io/t/
How To Save A Twitter Feed With Command Line Tool
Download and install RSS Tool for Linux.
Single Manual Use
/usr/local/bin/rsstool https://api.twitter.com/1/statuses/user_timeline.rss?screen_name=twitter_username
Multiple Automated Use
Edit your crontab.
crontab -e
Add the following line, which runs just before midnight, strips out the rubbish and saves the text format version into a text file.
59 23 * * * DATE=$( date +%F ) && /usr/local/bin/rsstool --since="$DATE" --shtml --sdesc --slf --txt https://api.twitter.com/1/statuses/user_timeline.rss?screen_name=twitter_username >> ~/Documents/twitter_username.txt