commandlinefu.com is the place to record those command-line gems that you return to again and again.
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Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
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Usage: flight_status airline_code flight_number (optional)_offset_of_departure_date_from_today
So for instance, to track a flight which departed yesterday, the optional 3rd parameter should have a value of -1.
flight_status ua 3655 -1
Departure: San Francisco, CA (SFO)
Scheduled: 6:30 AM, Jan 3
Takeoff: 7:18 AM, Jan 3
Term-Gate: Term 1 - 32A
Arrival: Newark, NJ (EWR)
Scheduled: 2:55 PM, Jan 3
At Gate: 3:42 PM, Jan 3
Term-Gate: Term C - C131
html2text needs to be installed for this command. only tested on ubuntu 9.10
Usage: clfavs username password num_favourite_commands file_in_which_to_backup