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Re: Shell script help - get date of last modified file in hierarchy

Subject: Re: Shell script help - get date of last modified file in hierarchy
From: Brian Caldwell <email@hidden>
Date: Tue, 27 Mar 2007 21:02:44 -0600
Delivered-to: email@hidden
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On Mar 27, 2007, at 06:54am, applescript-users- email@hidden wrote:

Date: Mon, 26 Mar 2007 22:27:12 -0400
From: Mark Walsh <email@hidden>
Subject: Shell script help - get date of last modified file in
	hierarchy
To: applescript Mailing List <email@hidden>
Message-ID: <C22DF940.75A69%email@hidden>
Content-Type: text/plain; charset="US-ASCII"
I'm looking for a simple shell script to get the modification date of the last modified file in a folder's complete hierarchy.

I'm trying to write a script to make sure that when a job is written to our server, that I can make sure it has the most recent files. I already have shell scripts that check the count of files in the hierarchy (as well as logging the filepaths) and I would like to add a warning if it does not find the same date for the last modified files in each folder.

Any help would be greatly appreciated.

I had to think about this one for awhile. It's tempting and easy to use ls with various options to try to get close to what you want. But when you said "complete hierarchy", ls can only go so far on it's own. Here's what I can up with:

find . -type f -print | xargs stat -qf "%m%t%SN" {} | sort -rn | head -1 | cut -f2-

The breakdown: (1) do a find descending into file hierarchy starting at current directory, for regular files, and print their names; (2) do a stat on filenames piped via stdin using format of modification time, tab, filename; (3) sort piped stdin in reverse numerical order; (most recent first) (4) list first 1 records piped from stdin; (5) strip off the modification time field added in step (2) on data piped via stdin; and print result - the name of the file with the most recent modification time.

HTH,
Brian Caldwell


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