You can find all files over 99 MB in size and store the file names in a text file with the command below:
dir C:\ /a-d/s | findstr "[0-9][0-9][0-9],[0-9].*,[0-9]" | findstr /v
"[er](s)" > bigfiles.txt
You can use dir /a-d to select only files and not directories.
The /a option means that you want to display files with the
specified attributes. Directories are specified by d; specifying
a -d means select everything that is not a directory.
The /s option for the dir command indicates that you
want to display files in the specified directory and all of its subdirectories.
You can use the findstr command to filter the output of the
dir command. If I only wanted to see files that were at least
10 MB or more, I could use findstr "[0-9][0-9],[0-9].*,". To send
the output of the dir command to the findstr command,
you use the |, which is the pipe symbol, e.g.,
dir /a-d/s | findstr "[0-9][0-9],[0-9].*,". The information between
the double quotes is a "regular expression" that tells the findstr
command what to look for in the input it receives. I want it to look for
two numbers, followed by a comma, then another number, then zero or more
characters and then another comma. The [0-9] tells
finstr to look for any character in the numeric set, i.e., 0, 1,
2, 3, 4, 5, 6, 7, 8, or 9. Since I include [0-9] twice,
findstr looks for two numbers, one after the other. The dot,
., is used to represent any character and the *
following it states the character can occur zero or more times. Then another
comma should appear. That command
dir /a-d/s | findstr "[0-9][0-9],[0-9].*,", might produce the
following output.
C:\Documents and Settings\administrator>dir /a-d/s | findstr "[0-9][0-9],[0-9].*
,"
07/30/2002 04:27p 35,417,061 savceclt.exe
5 File(s) 36,390,066 bytes
217 File(s) 38,486,808 bytes
0 Dir(s) 469,125,120 bytes free
I don't want the "File(s) and "Dir(s)" lines. I can eliminate them by sending
the outpout of the findstr command to another findstr
command, i.e., dir /a-d/s | findstr "[0-9][0-9],[0-9].*," |
findstr /v "[er](s)". The /v option to findstr
tells findstr to display only lines that do not contain a match.
In this case, I tell it to look for either an "e" or "r" followed by "(s)"
and to discard any lines that match.
:\Documents and Settings\administrator>dir /a-d/s | findstr "[0-9][0-9],[0-9].* ," | findstr /v "[er](s)" 07/30/2002 04:27p 35,417,061 savceclt.exe
In the case above, I've found all files greater than 10 MB in the administrator's "My Documents" directory or beneath it. If I want to search the entire system for files 100 MB or greater, I could use the following commands:
C:\Documents and Settings\administrator>dir C:\ /a-d/s | findstr "[0-9][0-9][0-9 ],[0-9].*,[0-9]" | findstr /v "[er](s)" > bigfiles.txt
Those commands start at the root directory, C:\ and search
for all files within that directory or beneath it that are over 99 MB. The
>bigfiles.txt redirects the output of the last command to
a file named bigfiles.txt.
Examing the bigfiles.txt file, I might see something like
the following:
C:\Documents and Settings\administrator>type bigfiles.txt 06/21/2010 05:21p 267,948,032 hiberfil.sys 06/21/2010 05:21p 314,572,800 pagefile.sys 06/09/2010 05:49p 277,297,548 Deleted Items.dbx 06/09/2010 05:49p 151,866,224 Inbox.dbx 06/09/2010 05:49p 144,463,812 Sent Items.dbx 10/27/2009 08:51p 949,861,964 Inbox 06/20/2010 07:48p 1,014,070,855 Sent 03/13/2010 04:42p 2,148,821,701 Inbox 06/21/2010 03:47p 388,459,482 Sent 06/21/2010 05:00p 201,147,392 personal.pst Directory of C:\Program Files\PhoneTools\vocfiles\WAVMS,11025,8,1 07/27/2007 09:03a 119,977,472 500dc2a.msp 07/27/2007 09:03a 119,977,472 5a34890.msp 09/14/2007 01:16p 113,491,064 MAINSP3.CAB
In the case above, there was one line that
was included that I didn't actually want just because it did fit
the pattern I was looking for, i.e., the WAVMS,11025,8,1 line.
But I would expect entries like that to be rare, so I'm not concerned
about it in this case.
The directory where the file was found won't be listed, but you can look
through bigfiles.txt and then locate particular files listed
in it and then make the current directory the root directory with
cd \ and then search all subdirectories for the file name as
in the example below:
C:\Documents and Settings\administrator>cd \
C:\>dir /s 500dc2a.msp
Volume in drive C has no label.
Volume Serial Number is F4D7-D263
Directory of C:\WINDOWS\Installer
07/27/2007 09:03a 119,977,472 500dc2a.msp
1 File(s) 119,977,472 bytes
Total Files Listed:
1 File(s) 119,977,472 bytes
0 Dir(s) 471,283,200 bytes free
