Need some help creating a script that will look for 0kb files
I need some help writing a script to sift through a particular directory and find any 0kb files that are more than 20 minutes old. We have an app that writes data to txt files with random file names, and sometimes the process fails and restarts, leaving
the 0kb file until it's restarted. So I want to focus on ones that are more than 20 minutes old to prevent the script from finding legitimate 0kb files because they're still in the process of being written. Problem is I have little scripting knowledge,
so does anyone have an existing script I can use/modify?
Thanks!
October 20th, 2010 11:59am
Use ForFiles command from Windows 2003. Copy to XP if needed on the desktop.
Run this command from any command line, change c:\windows to the desired path. You can add some logic to check the date/time if needed as well. Although 20mins is a pretty small time to test against, a day is much easier using the /D switch.
forfiles /S /P c:\windows /M *.* /C "cmd /c If @fsize==0 Echo @path @fsize"
FORFILES [/P pathname] [/M searchmask] [/S]
[/C command] [/D [+ | -] {MM/dd/yyyy | dd}]
Description:
Selects a file (or set of files) and executes a
command on that file. This is helpful for batch jobs.
Parameter List:
/P pathname Indicates the path to start searching.
The default folder is the current working
directory (.).
/M searchmask Searches files according to a searchmask.
The default searchmask is '*' .
/S Instructs forfiles to recurse into
subdirectories. Like "DIR /S".
/C command Indicates the command to execute for each file.
Command strings should be wrapped in double
quotes.
The default command is "cmd /c echo @file".
The following variables can be used in the
command string:
@file - returns the name of the file.
@fname - returns the file name without
extension.
@ext - returns only the extension of the
file.
@path - returns the full path of the file.
@relpath - returns the relative path of the
file.
@isdir - returns "TRUE" if a file type is
a directory, and "FALSE" for files.
@fsize - returns the size of the file in
bytes.
@fdate - returns the last modified date of the
file.
@ftime - returns the last modified time of the
file.
To include special characters in the command
line, use the hexadecimal code for the character
in 0xHH format (ex. 0x09 for tab). Internal
CMD.exe commands should be preceded with
"cmd /c".
/D date Selects files with a last modified date greater
than or equal to (+), or less than or equal to
(-), the specified date using the
"MM/dd/yyyy" format; or selects files with a
last modified date greater than or equal to (+)
the current date plus "dd" days, or less than or
equal to (-) the current date minus "dd" days. A
valid "dd" number of days can be any number in
the range of 0 - 32768.
"+" is taken as default sign if not specified.
/? Displays this help message.
Examples:
FORFILES /?
FORFILES
FORFILES /P C:\WINDOWS /S /M DNS*.*
FORFILES /S /M *.txt /C "cmd /c type @file | more"
FORFILES /P C:\ /S /M *.bat
FORFILES /D -30 /M *.exe
/C "cmd /c echo @path 0x09 was changed 30 days ago"
FORFILES /D 01/01/2001
/C "cmd /c echo @fname is new since Jan 1st 2001"
FORFILES /D +10/20/2010 /C "cmd /c echo @fname is new today"
FORFILES /M *.exe /D +1
FORFILES /S /M *.doc /C "cmd /c echo @fsize"
FORFILES /M *.txt /C "cmd /c if @isdir==FALSE notepad.exe @file"
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October 20th, 2010 3:40pm
Hi,
Please try the following PowerShell script:
Dir| where{ $_.length –eq 0 –and $_.LastWriteTime –lt [DateTime]::Now.AddHours(-1/3) }
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October 21st, 2010 3:49am
Hi,
Do you need any other assistance? If there is anything we can do for you, please let us know.
Thanks.This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your
question. This can be beneficial to other community members reading the thread.
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October 26th, 2010 4:56pm