[NTLUG:Discuss] disk usage by file age

[Stuart Johnston]

Michael Barnes wrote:
> On Wed, Jun 30, 2010 at 12:58 PM, Fred James <fredjame at fredjame.cnc.net> wrote:
>> Michael Barnes wrote:
>>> I'm trying to figure out how to gather some disk data.  What I need is
>>> to find the disk usage by subfolder, but only by files older than a
>>> certain time.  I can get a list of files with
>>> find ./ftp/news +mtime 180
>>> and get a list of everything older than six months.
>>> I can do
>>> du -sh ./ftp/news/*
>>> and find the usage by subfolder.
>>> What I need is to combine the two, so I get something like
>>>
>>> 15M             ftp/news/4-Dallas
>>> 40M             ftp/news/4-Washington
>>> 560M    ftp/news/House
>>> 1.1G            ftp/news/Senate
>>> 717M    ftp/news/White House
>>> 69M             ftp/news/YIR 2009
>>> 65M             ftp/news/stuff
>>>
>>> knowing that the size is for files over six months old.
>>>
>>>
>>> Any simple ideas for this?
>>>
>>> Thanks,
>>> Michael
>>>
>> Michael Barnes
>> Have you considered the various 'time' options for 'du' (snip below)? Would
>> any of those get you closer to what you want?
>> You might also consider the '-printf' option (and it's formating options) of
>> 'find' (under Actions). Hope that helps
>> Regards
>> Fred James
>>
>> --time show time of the last modification of any file in the directory, or
>> any of its subdirectories
>>
>> --time=WORD
>> show time as WORD instead of modification time: atime, access, use, ctime or
>> status
>>
>> --time-style=STYLE
>> show times using style STYLE: full-iso, long-iso, iso, +FORMAT FORMAT is
>> interpreted like ‘date'
>>
>>
> 
> I tried the 'time' options and got
> du: unrecognized option `--time'
> and they are not listed as options in du --help.
> It is an older machine running SLES 9.  Apparently the 'time' options
> are new.  I don't know how I would upgrade du for this old SuSE
> install.

I don't think the time options will do what you want anyway.  Do you 
have the --files0-from or --exclude-from options?