Solved

Find command

Posted on 2011-09-22
8
280 Views
Last Modified: 2012-05-12
find /tmp/mydirectory -type f –iname -mtime +30 -exec rm -f {} \;

I want to find  and remove specific files with extensions .dat,.txt,.TXT,.csv,.XLS from /tmp/mydirectory which are 30days old.
Can some body tell me how to pass the combination of file extensions so that only files with these extensions are picked and deleted?(Any files other than these set of extensions should not be removed.I'm using redhat Red Hat Enterprise Linux).Thanks in advance
0
Comment
Question by:prashubk
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
  • 2
8 Comments
 
LVL 84

Expert Comment

by:ozo
ID: 36584809
-iname '*.dat' -o -iname '*.txt' -o -iname '*.csv' -o -iname '*.xls'
0
 
LVL 21

Expert Comment

by:Papertrip
ID: 36584841
find /tmp/mydirectory -type f –iname '*.dat' -o -iname '*.txt' -o -iname '*.csv' -o -iname '*.xls' -mtime +30 | xargs rm -f

Open in new window


If you have -o's and an exec, then you will need an exec for each -o.  xargs is more efficient as well, in some cases at least.
0
 
LVL 84

Accepted Solution

by:
ozo earned 250 total points
ID: 36584852
you can use
\( -iname '*.dat' -o -iname '*.txt' -o -iname '*.csv' -o -iname '*.xls' \) -mtime +30 -exec
but xargs is generally more efficient
0
Learn by Doing. Anytime. Anywhere.

Do you like to learn by doing?
Our labs and exercises give you the chance to do just that: Learn by performing actions on real environments.

Hands-on, scenario-based labs give you experience on real environments provided by us so you don't have to worry about breaking anything.

 

Author Comment

by:prashubk
ID: 36584870
thanks for the answers.  Why do we say xargs is more efficient over exec?. What is the advantages of using xargs over exec in this context?
0
 
LVL 21

Assisted Solution

by:Papertrip
Papertrip earned 250 total points
ID: 36584884
exec will spawn a new process (rm -f) for each match.  xargs contructs a list and will spawn the process once it hits the limit defined by the system.

[root@broken etc]# xargs --show-limits
Your environment variables take up 1699 bytes
POSIX upper limit on argument length (this system): 2617693
POSIX smallest allowable upper limit on argument length (all systems): 4096
Maximum length of command we could actually use: 2615994
Size of command buffer we are actually using: 131072

Open in new window

0
 
LVL 21

Expert Comment

by:Papertrip
ID: 36584913
Thanks for the assist, and no offense to ozo of course, but why was http:#36584852 chosen as Accepted Solution?

Are you not going to use xargs like we both suggest?  If you are then technically http:#36584841 is exactly what you want and should have been the Accepted Solution.
0
 

Author Comment

by:prashubk
ID: 36584925
sorry ,oh yes i should have accepted 36584841 as this is what i'm intended to use.Well Ozo contributed with the idea  to pick files with desired extension
0
 
LVL 21

Expert Comment

by:Papertrip
ID: 36584948
All good, just wondering, thanks for replying.

Good luck!
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Have you ever been frustrated by having to click seven times in order to retrieve a small bit of information from the web, always the same seven clicks, scrolling down and down until you reach your target? When you know the benefits of the command l…
The purpose of this article is to demonstrate how we can upgrade Python from version 2.7.6 to Python 2.7.10 on the Linux Mint operating system. I am using an Oracle Virtual Box where I have installed Linux Mint operating system version 17.2. Once yo…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question