date --date="1 fortnight ago"

date offset calculations

The date command does offset calculations nicely, handles concepts like "a month" as you'd expect, and is good for offsets of at least 100M years in either direction.
Sample Output
Fri Jan 23 14:53:27 CST 2009

By: mkc
2009-02-06 20:57:59

These Might Interest You

  • The "-d" option for gnu's "date" command can calculate positive or negative offset from any time, including "now". You can even specify a source timezone (the output timezone can be set with the TZ environment variable). Useful! Fun! Not very well documented! Show Sample Output

    date -ud "1970-01-01 + 1234567890 seconds"
    zude · 2009-10-07 04:35:40 3
  • By using vim, you can also filter content on stdout, using vim's extra power, like search pattern offset! No more awk of course, sorry. details : -e ex mode -s silent -c 'ex command' : global + start and end pattern + offset print (p) -cq : quit Show Sample Output

    vim -e -s -c 'g/start_pattern/+1,/stop_pattern/-1 p' -cq file.txt
    syladmin · 2009-08-26 10:22:27 0
  • Replace (as opposed to insert) hex opcodes, data, breakpoints, etc. without opening a hex editor. HEXBYTES contains the hex you want to inject in ascii form (e.g. 31c0) OFFSET is the hex offset (e.g. 49cf) into the binary FILE

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    zombiedeity · 2009-03-11 17:02:24 0
  • 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. eg. flight_status ua 3655 -1 output --------- Status: Arrived 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 Note: html2text needs to be installed for this command. only tested on ubuntu 9.10 Show Sample Output

    flight_status() { if [[ $# -eq 3 ]];then offset=$3; else offset=0; fi; curl ""$1"&fn="$2"&dpdat=$(date +%Y%m%d -d ${offset}day)" 2>/dev/null |html2text |grep ":"; }
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  • Format of the response: [-]HH:mm Show Sample Output

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    harpon · 2012-10-15 18:13:37 0
  • a pkcs8 key will have integer 00 at offset 4 and an rsaEncryption object at offset 9

    openssl ans1parse -inform DER < [priv key]
    wwest4 · 2009-02-05 16:54:19 0

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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