Find trashed file location in GIO - c

The documentation says that all files moved to trash are stored normally in ~/.local/share/Trash/files. Are there an exception for files removed from removable media? Are they stored in drive_root/.Trash-xxx directory? Or is this behavior obsolete?
How do I find real file path of file in trash can? I have a list of GFileInfo obtained from g_file_enumerate_children for trash:/// uri. It's easy if all files are stored in one directory. But I'm afraid this could be different for removable drives.

From removeable media there are the .Trash-$(user_id) folders, so you will have to get all mounted disks as well as the home trashcan.
Under each mounted device (not being the home folder) will be a .Trash folder for each user ever having something deleted. So e.g. for my user foo which has ID 1000 (see /etc/passwd) you will have to look for .Trash-1000 folders.
This is AFAIK not obsolete, just think about the oposite, the file would have to be copied over to your home storage just to move it to trash...
For the second part, you probably better off asking that on the glib/gtk mailinglist.

Related

Update file across multiple folder locations?

I need something that can copy a specified file any and everywhere on my drive (or computer) where that file already exists; i.e. update a file. I tried to search this site, in case I'm not the first, and found this:
CMD command line: copy file to multiple locations at the same time
But not quite the same.
Example:
Say I have a file called CurrentList.txt, and I have copies of it all over my hard drive.  But then I change it and I want all the copies to update.  So I want to copy the newer one over all the others.  It could 'copy if newer', but generally I know it's newer, so it could also just find every instance and copy over it.
I was originally going to use some kind of .bat file that would have to iterate over every folder seeking the file in question, but my batch file programming is limited/rusty.  Then I looked to see if xcopy could do it, but I don't think so...
For how I will use it most, I generally know where those files are going to be, so it actually might be as good or better if I could specify it to (using example), "copy CurrentList.txt, overwriting all other copies wherever found in the C:\Lists folder and all subfolders".
I would really like to be able to have it in a context menu, so I could (from a file explorer) right click on a file or selected files and choose the option to distribute it.
Thanks in advance for any ideas.
Use the "replace" command...
replace CurrentList.txt C:\Lists /s

Retrieve file count without walking through entire file system

I am on a vxworks 6.9 platform. I want to know how many files are in a folder. The file system is DOSFS (FAT). The only way I know how to do this is to simply loop through every file in the folder and count. This gets very expensive the more files in the folder. Is there a more sensible way to do this? Does there exist some internal database or count of all files in a folder?
The FAT filesystem does not keep track of the number of files it contains. What it does contain is:
A boot sector
A filesystem information sector (on FAT32) including:
Last number of known free clusters
Number of the most recently allocated cluster
Two copies of the file allocation table
An area for the root directory (on FAT12 and FAT16)
Data clusters
You'll need to walk the directory tree to get a count.

How to rename a file while using "move" in URL in apache camel

I have an URL like
url = "file:D:/inputFolder?move=D:/outputFolder". we are making this url dynamically.
I want to rename the file while moving, So I made it something like this
url = "file:D:/inputFolder?move=D:/outputFolder&fileName=abc.txt". But I think move and fileName do not work together, it is not renaming.
Is there any alternative to do it? Please remember I want with "move" only.
I cannot use .setHeader(..) also.
Thanks,
Hy,
as far as I understand you, your trying to move the file in one single uri.
That is not really how camel works.
The idea of camel is to have a "consumer" and a "producer", where the consumer loads data (e.g. your file) and the producer puts the data somewhere (e.g. save the file into a folder)
That being said, here is what worked for me with a java route:
from("file:/home/chris/temp/camel/in")
.to("file:/home/chris/temp/camel/out/?fileName=test.txt");
The from part configures the folder where camel looks for new files. A few notes on that:
The file component checks the folder each 0.5 sec for new files. This can be changed with the delay parameter
The option noop configures, if the file is being moved or copied. By default it is set to false, which means it is moved
In the to part you configure, where the file is supposed to be moved. Here you can use the fileName parameter to rename the file.
Be careful with this though, because setting an option in the uri directly does make it "static".
What I mean by that is, that the only way of changing the parameter is by completely reconfiguring the route or by restarting it, where neither is something you would want to do normally.
Note 1:
Moving all files that are put into one folder into the same file always overrides the previous file by default.
You could, for example, use the fileExists parameter to always just append the content of the file: fileExists=Append (See camel file docu for details)
Note 2:
There is an option in the file component to not "move" the file, but copy, rename and delete it, which sometimes is necessary, when you want to move it onto a different drive and a simple copy does not work.
Also see the docu for the camel file component for details on that.
Note 3:
You can have multiple to() statements in the same route to have the file moved to multiple locations. For example:
from("file:/home/chris/temp/camel/in")
.to("file:/home/chris/temp/camel/out/?fileName=test.txt")
.to("smtp:....");
Hope I could help you and answer you question.
Greets
Chris
Two possible ways to achieve your goal.
Use both "consumer" and "producer"
Using this way, you are free to control where and how your destination can be set and has great freedom to control filename with the use of a processor/bean.
from("file:D:/inputFolder")
.to("file:D:/outputFolder?fileName=abc.txt")
Use "consumer" only
Using this way, you are treating your work as source data control. This can be use when your file is going to move within same drive. The drawback is the filename rename pattern is limited (refer to camel file language)
from("file:D:/inputFolder?move=${file:parent}/../outputFolder/abc.txt")

How do I write a java code that will export a file to a usb drive

It is exactly wnat the title says I have beenlooking for quite sometime and haven't found anything the main use would be as a auto run file to collect error reports from our offic computers
You could do this if you run the program from the USB drive itself, and declare wherever the file is stored as the "working directory" as the USB may have different IDs for different computers...things get messy.
My recommendation is to use File in Java, and Path (http://docs.oracle.com/javase/7/docs/api/java/nio/file/Path.html)
A warning though is that if you copy a directory (folder), the files within that folder are actually not automatically copied...its just the way it works. (more here: http://docs.oracle.com/javase/tutorial/essential/io/copy.html)
Assuming the file is always in the same place going to the same place. For example:
Files.copy(source, destination, options);
or you can open text file and read from it for a more advanced method:
Files.copy(InputStream, path, options);
etc.

Filesystem links on a FAT32 formatted storage

I know FAT32, as well as FAT16/12 neither support symbolic links nor hard-links. However I came up with this idea:
The FAT specification describes that every file is associated with a directory-entry. In my understanding, one could say that a file-entry in a directory somehow or other points to the file's content.
So, how can I define two directory-entries which point to the same file-content? Or, what could prevent me from doing so?
Use case: I have a USB mass storage device for my car radio, and I want to use directories as playlists since the radio software doesn't support playlists. So it isn't important to me how Windows behaves when doing this.
This should work for simple issues. I.e. it works as a hack / workaround and I don't know what happens if you rename / move / remove files. So, you should not do this on your main hdd.
I edited the directory-entries manually using a hex editor. I modified clusters as well as file-sizes and successfully faked hardlinks. My car-radio and even Windows (7, 64Bit) have no problems with playing back the original and "hard-linked" mp3-Files I used.
When I'm opening the device again in the hex-editor none of my modifications are changed back (See chkdsk issue in answer #1 - but as far as I know chkdsk has to be started manually, anyways.
What you are talking about ("two directory-entries which are pointing to the same file-content") are hard links. chkdsk will report them as cross-links and break them, "repairing" the files (in fact making the copies).
MichaelPh posted instructions on SuperUser:
https://superuser.com/a/486829/51237
It's possible to use Disk Probe (on XP only, I've yet to get it to write the changes on Win7) to modify the cluster a FAT Directory references. This method can be used to redirect the DCIM folder (or a subfolder) to point to the folder used by a different scan device.
Whether this is a good idea or not is a different matter and you use this at your own risk.
Insert the Eye-Fi card either in it's USB Card Reader or directly into an SSD slot and note the drive letter it's installed as (assumed to be F:\ for simplicity)
Ensure all Windows Explorer windows for the card and sub-directories are closed.
Run Disk Probe
Select Drives->Logical Volume
In the Open Logical Volume dialog double-click F:\ in the Logical Volumes list
Click the Set Active button for the Handle F: has been selected as. You can leave the handle as read-only for now.
Select Tools->Search Sectors...
Check Exhaustive Search, enter DCIM in Enter characters to search for and Search
You should find a match (mine is at 8192). Select No on the "Found match..." dialog to cancel the rest of the search.
Select Sectors->Read and increase Number of Sectors to at least two so that the whole directory table is included.
Find DCIM in the ASCII on the right of the Disk Probe screen, this is the start of the FAT entry for the directory. Make a note of the hex value of the 27th byte of the record (each entry is 32bytes), this is the directory cluster reference. This value is require to revert the DCIM directory back to normal use if required.
Find the entry for the directory you want to redirect DCIM to and again make a note of the 27th byte in the record.
Go back to the 27th byte of the DCIM record and change it to the value noted in step 11.
Select Sectors->Write and then click Write it on the Write Sector dialog. A warning will come up if you opened the sectors as read-only. Yes to overwrite if you're happy to make the change.
Opening the DCIM directory in Windows Explorer will now show the contents of the target directory.

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