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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Print a date from 3 days ago

Terminal - Print a date from 3 days ago
TZ=PST8PDT+72 date '+%Y_%m_%d'
2010-07-02 00:29:27
Functions: date
Print a date from 3 days ago

This command prints the Date (Not time) from 3 days ago (72 hours ago).

This works on systems without GNU date (MacOSX , Solaris, FreeBSD).


There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

why my console display 2010_07_01 in MacOSX10.6.4 OS?

Comment by fire9 329 weeks and 1 day ago

@fire9 : I'm not sure. It works for me on 10.5.8.

Try '+24' instead of '+72'

Comment by StefanLasiewski 329 weeks and 1 day ago

You can also use:

date -d "-3 days" +%Y_%m_%d

but I dont know if that will work on non gnu systems..

Comment by xeor 329 weeks and 1 day ago

No, that will not work on non-GNU systems and that is exactly why this recipe is so good, so your attempt to help was kind of off the target. Everybody knows the date calculation capacities of GNU date (which don't apply to the regular UNIX date command) and the difficulties of working with dates on AIX/HP-UX/Solaris without perl.

Comment by Patola 328 weeks and 6 days ago

@xeor : On non-GNU systems (MacOSX, *BSD, etc). The '-d' flag "SETS the kernel's value for daylight saving time." It *sets* the time.

Comment by StefanLasiewski 328 weeks and 3 days ago

It worked for by changing PST8PDT to GMT, so the new command:

TZ=GMT+72 date '+%Y_%m_%d'
Comment by ali980 259 weeks and 2 days ago

Your point of view

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