[NTLUG:Discuss] disk usage by file age

[Michael Barnes]

On Wed, Jun 30, 2010 at 1:26 PM, Stuart Johnston <saj at thecommune.net> wrote:
> 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?
>
>

mbarnes at ftp:~> du --help
Usage: du [OPTION]... [FILE]...
Summarize disk usage of each FILE, recursively for directories.

Mandatory arguments to long options are mandatory for short options too.
  -a, --all             write counts for all files, not just directories
      --apparent-size   print apparent sizes, rather than disk usage; although
                          the apparent size is usually smaller, it may be
                          larger due to holes in (`sparse') files, internal
                          fragmentation, indirect blocks, and the like
  -B, --block-size=SIZE use SIZE-byte blocks
  -b, --bytes           equivalent to `--apparent-size --block-size=1'
  -c, --total           produce a grand total
  -D, --dereference-args  dereference FILEs that are symbolic links
  -H                    like --si, but also evokes a warning; will soon
                        change to be equivalent to --dereference-args (-D)
  -h, --human-readable  print sizes in human readable format (e.g., 1K 234M 2G)
      --si              like -h, but use powers of 1000 not 1024
  -k                    like --block-size=1K
  -l, --count-links     count sizes many times if hard linked
  -L, --dereference     dereference all symbolic links
  -P, --no-dereference  don't follow any symbolic links (this is the default)
  -0, --null            end each output line with 0 byte rather than newline
  -S, --separate-dirs   do not include size of subdirectories
  -s, --summarize       display only a total for each argument
  -x, --one-file-system  skip directories on different filesystems
  -X FILE, --exclude-from=FILE  Exclude files that match any pattern in FILE.
      --exclude=PATTERN Exclude files that match PATTERN.
      --max-depth=N     print the total for a directory (or file, with --all)
                          only if it is N or fewer levels below the command
                          line argument;  --max-depth=0 is the same as
                          --summarize
      --help     display this help and exit
      --version  output version information and exit

SIZE may be (or may be an integer optionally followed by) one of following:
kB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P, E, Z, Y.

Report bugs to <bug-coreutils at gnu.org>.