Watching the filesystem with FileSystemWatcher. When a file is deleted I want to get the last write date of that file.
Do I have to sample a baseline of all files monitored when my script starts or can this be done without?
Or am I using the wrong tool?
Related
I can't seem to find any information on what happens if you read/search a file using a Windows Batch Script when the file still needs to be editable at the same time (eg an application log file bring written to in real time).
Does the batch file lock the file you are reading/searching?
Does it read the file contents from the particular datetime you accessed it only ignoring any subsequent edits. In particular, I'm interested in the answer for using for /f or findstr or find.
Thanks
I have made a project that renames files using FTP. Now I want to find out which files have not been renamed. I could find it out by looking up those files using the file structure (It is different after the rename), but I want to know if there is a more easy option, like using the "date modified" from windows. (date modified does only work if the file itself has changed, not the name)
In accordance with file systems, former filenames are not recorded unlike the last modification date, therefore there is no easy way to find it out. You should implement your own mechanism to accomplish this.
I'm looking for a method which would allow me to automatically open a modified file in windows. In other words, something running in the background which detects changes in a given set of files; such that when one is detected, the file is opened. I attempted writing a batch file which saves the last modified date and time to a text file and repeatedly checks that. I think this method works, but I didn't know if there's a better way out there.
My motivation is that I'm scp'ing files regularly from a linux machine to windows, and it would be neat if they just opened automatically on my windows machine after updating locally.
i would like to know if there is a vb script which will move files from a specific location and there subfolders to another location based on their modified date and to keep the original directory structure in the new location.
The results to be saved in a .txt file.
thx in advance.
This former question here on SO
VBScript - copy files modified in last 24 hours
is a sample from which you can start from. If you have any difficulties to adapt it to your needs, come back and ask again.
I'm currently in working on a script to create a custom backup script, the only piece I'm missing is a file monitor. I need some form of a script that will monitor a folder for file changes, and then run a command with the file that's changed.
So, for example, if the file changes, it'll execute "c:/syncbatch.bat %Location_Of_File%"
In VBScript, you can monitor a folder for file changes by subscribing to the WMI __InstanceModificationEvent event. These articles contain sample code that you can learn from and adapt to your specific needs:
WMI and File System Monitoring
How Can I Monitor for Different Types of Events With Just One Script?
Calling WMI is fairly cryptic and it causes the WMI service to start running which can contribute to bloat since its fairly large and you really can't cancel the file change notifications you've requested from it without rebooting. Some people experimenting with remote printing from a Dropbox folder found that a simple VBScript program that ran an endless loop with a 10 second WScript.Sleep call in the loop used far less resource. Of course to stop it you have to task kill that script or program into it some exit trigger it can find like a specifically named empty file in the watch folder, but that is still easier to do than messing with WMI.
The Folder Spy http://venussoftcorporation.blogspot.com/2010/05/thefolderspy.html
is a free lightweight DOT.NET based file/folder watching GUI application I'ved used before to run scripts based on file changes. It looks like the new version can pass the event filename to the launched command. The old version I had didn't yet support file event info so when launched, my script had to instance a File System Object and scan the watched folder to locate the new files based on criteria like datestamps and sizes.
This newer version appears to let you pass the file name to the script if you say myscript.vbs "*f" on the optional script call entry. Quotes can be important when passing file paths that have spaces in folder names. Just remember if you are watching change events you will get a lot of them as a file grows or is edited, usually you just want notification of file adds or deletes.
Another trick your script can do is put the file size in a variable, sleep for a few seconds, and check the file again to see if its changed. if it hasn't changed in a few seconds you can usually assume whatever created it is done writing it to disk. if it keeps changing just loop until its stable.