l i n u x - u s e r s - g r o u p - o f - d a v i s
L U G O D
 
Next Meeting:
November 4: Social gathering
Next Installfest:
TBD
Latest News:
Oct. 10: LUGOD Installfests coming again soon
Page last updated:
2010 Jun 30 16:34

The following is an archive of a post made to our 'vox-tech mailing list' by one of its subscribers.

Report this post as spam:

(Enter your email address)
Re: [vox-tech] Regular expression help
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [vox-tech] Regular expression help



On Wed, Jun 30, 2010 at 03:01:13PM -0700, David Spencer, Internet Handyman wrote:
> Guys, I'm sorry about asking this on the list; but I seem to have a mental
> block when it comes to regular expressions. Here's what I'm trying to do:

That's what this list is here for! ;)


> I have a lot of directories with a vast number of files, some of which I wishy
> to delete based on the month they were created. I've built a file from some
> full directory listings that has all the files I wish to delete. (Just go with
> me on this and don't suggest alternative methods of performing the task - I'm
> simplfying the job so it can be explained more easily.)

Another alternative might be to use "find" to find all files created
or modified within a certain timespan, and then delete them.
(Or simply list them, which you can capture into a file for review,
and delete the files at your leisure)

You could also use 'find' as a means of getting easier-to-parse output
(additional or fewer fields, and formatted differently) than what you
get from "ls -l".

e.g.:

  find -mmin +43200   # more modified more than 30 days (30*24*60 minutes) ago

  find -not -newermt '2010-04-01 00:00:00'  # files modified ('m') longer ago
                                            # ("not newer") than the date ('t')
                                            # April 1st


Of course, I've pretty much never had reason to use these, so I might be
off the mark with them, but I figured "find" is a lot more flexible and
safer than "ls -l" followed by regexp magic. ;)

-bill!
_______________________________________________
vox-tech mailing list
vox-tech@lists.lugod.org
http://lists.lugod.org/mailman/listinfo/vox-tech



LinkedIn
LUGOD Group on LinkedIn
Sign up for LUGOD event announcements
Your email address:
facebook
LUGOD Group on Facebook
'Like' LUGOD on Facebook:

Hosting provided by:
Sunset Systems
Sunset Systems offers preconfigured Linux systems, remote system administration and custom software development.

LUGOD: Linux Users' Group of Davis
PO Box 2082, Davis, CA 95617
Contact Us

LUGOD is a 501(c)7 non-profit organization
based in Davis, California
and serving the Sacramento area.
"Linux" is a trademark of Linus Torvalds.

Sponsored in part by:
Appahost Applications
For a significant contribution towards our projector, and a generous donation to allow us to continue meeting at the Davis Library.