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Operating Systems Linux Ubuntu Shell Scripting , Moving Old file to specific folder Post 302917077 by shajoftaj on Sunday 14th of September 2014 03:00:42 AM

Old

09-14-2014

Registered User

Shell Scripting , Moving Old file to specific folder

There are files stored like 14.Aug.2014.log, 15.Aug.2014.log etc. in a folder $HOME/logyou need to find out all the log files of last 1 month and move them into $HOME/logs/lastmonth/

this should be implemented with reference of file name.

---------- Post updated at 12:30 PM ---------- Previous update was at 12:00 PM ----------

Sol.

Code:

#!/bin/bash
date_30_days=`date --date="30 days ago" +"%Y%m%d"`
#echo $date_30_days
for file_date in *.log ;
do
        echo $file_date
        file_date_format=`echo $file_date|awk -F '.' '{ print $1 " " $2" "$3}'`
        file_date_numeric=`date -d "$file_date_format" +%Y%m%d`
        #echo $file_date_numeric
        if [ $date_30_days -ge $file_date_numeric ]; then
                mv $file_date ./lastmonth/$file_date
        else
                echo "NO OLD FILES"
        fi

but for above solution my boss has said that

What if there are lakhs of log files in that directory.

Can you think of a way to iterate not more than 30 times?

This is not efficient.
Can some one suggest me to proper way for this

Last edited by Don Cragun; 09-14-2014 at 04:51 AM.. Reason: Add CODE and ICODE tags.

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LEARN ABOUT LINUX

rmf

RMF(1)								     [nmh-1.5]								    RMF(1)

NAME

       rmf - remove an nmh folder

SYNOPSIS

       rmf [+folder] [-interactive | -nointeractive] [-version] [-help]

DESCRIPTION

       Rmf removes all of the messages (files) within the specified (or default) folder, and then removes the folder (directory) itself.

       If  there  are  any  files  within the folder which are not a part of nmh, they will not be removed, and an error will be produced.  If the
       folder is given explicitly or the -nointeractive option is given, then the folder will be removed  without  confirmation.   Otherwise,  the
       user  will be asked for confirmation.  If rmf can't find the current folder, for some reason, the folder to be removed defaults to `+inbox'
       (unless overridden by user's profile entry "Inbox") with confirmation.

       If the folder being removed is a subfolder, the parent folder will become the new current folder, and rmf will produce  a  message  telling
       the user this has happened.  This provides an easy mechanism for selecting a set of messages, operating on the list, then removing the list
       and returning to the current folder from which the list was extracted.

       If rmf s used on a read-only folder, it will delete all the (private) sequences (i.e., "atr-seq-folder" entries) for this folder from  your
       context without affecting the folder itself.

       Rmf irreversibly deletes messages that don't have other links, so use it with caution.

FILES

       $HOME/.mh_profile	  The user profile

PROFILE COMPONENTS

       Path:		    To determine the user's nmh directory
       Current-Folder:	    To find the default current folder
       Inbox:		    To find the default inbox

SEE ALSO

       rmm(1)

DEFAULTS

       `+folder' defaults to the current folder, usually with confirmation
       `-interactive' if +folder' not given, `-nointeractive' otherwise

CONTEXT

       Rmf  will  set the current folder to the parent folder if a subfolder is removed; or if the current folder is removed, it will make "inbox"
       current.  Otherwise, it doesn't change the current folder or message.

BUGS

       Although intuitively one would suspect that rmf works recursively, it does not.	Hence if you have a sub-folder within a folder,  in  order
       to rmf the parent, you must first rmf each of the children.

MH.6.8								   11 June 2012 							    RMF(1)