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Top Forums UNIX for Dummies Questions & Answers To delete the oldest files in a file when file count in the folder exceeds 7 Post 302708041 by akshay01987 on Monday 1st of October 2012 02:09:15 AM
Old 10-01-2012
To delete the oldest files in a file when file count in the folder exceeds 7

Hi All,

I need to delete the oldest file in folder when the file count in the folder exceed 6 ( i have a process that puts the source files into this folder )

E.x : Folder : /data/opt/backup
01/01/2012 a.txt
01/02/2012 b.txt
01/03/2012 c.txt
01/04/2012 d.txt
01/05/2012 e.txt
01/06/2012 f.txt

So when a new file g.txt comes on 01/07/2012. Then the oldest file a.txt dated 01/01/2012 should be deleted from the /data/opt/backup folder. Any help from the shell script perspective would be helpful
 

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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)
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