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Re: Shell script help - get date of last modified file in hierarchy
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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: "Mark J. Reed" <email@hidden>
  • Date: Mon, 26 Mar 2007 22:52:37 -0400

On 3/26/07, Mark Walsh <email@hidden> wrote:
I'm looking for a simple shell script to get the modification date of the
last modified file in a folder's complete hierarchy.

Easy to do with Perl(/Python/Ruby/Tcl), not so much with a shell script. The find(1) command lets you do pretty powerful queries against the file system, but "find the newest file" isn't one of them. (You could do it with a custom shell script passed as an -exec helper test to find, but that's not very efficient...)

Here's one way to do it with Perl.  Standard disclaimer: Perl was
chosen only because my fingers know it best, not because I believe it
is inherently superior to the other options available.

This works OMM:

do shell script "perl -MFile::Find -MFile::stat -le 'my $latest_mtime
= 0; find ( sub { my $mtime = stat($_)->mtime; $latest_mtime = $mtime
if $mtime > $latest_mtime; }, @ARGV);  print $latest_mtime;' " &
quoted form of POSIX path of startFolder

It returns the time_t value (seconds since 1970).  if you want the
date in a friendlier format, you can as usual use POSIX::strftime to
get it:

do shell script "perl -MFile::Find -MFile::stat -MPOSIX -le 'my
$latest_mtime = 0; find ( sub { my $mtime = stat($_)->mtime;
$latest_mtime = $mtime if $mtime > $latest_mtime; }, @ARGV);  print
strftime(\"%F %T\", localtime($latest_mtime));' " & quoted form of
POSIX path of startFolder



--
Mark J. Reed <email@hidden>
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 >Shell script help - get date of last modified file in hierarchy (From: Mark Walsh <email@hidden>)

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