Several days did not write articles, remember the last time I wrote a "lead to SEO optimization toppled six reasons", are some of the use of SEO optimization considerations, today with you to discuss the right to reduce the weight of the factors and
Everyone good, in this lunar New Year I wrote this article rubbish, hope to some just do garbage station friends some help, statement, the veteran on the Flash, the article some dishes, there are missing, but also hope to forgive! Wish you all a
browser to browse the HDFS namespace and view its file content.Space Reclamation
Space recyclingFile deletes and undeletes
When a file is deleted by one or more applications, it is not immediately removed from HDFS. On the contrary, HDFS first renames it as a file in the/trash directory. As long as the file is in/trash, it can be quickly restored. A file is saved at a configurable time in/
related to this file. Note that there is a certain time delay between the deleted files and the corresponding increase in the idle space of HDFS.
You can undelete a file in the/trash directory. If you want to undelete a deleted file, first browse the/trash directory and restore the file. The/
I used to download the gftp security package under Fedora9. After the uninstallation, I used the command to install the package successfully. After removing the gftp-2.0.18, the gftp-2.0.18 contents remain in the recycle bin, but when the recycle bin is cleared, the system prompts that the permission is not limited. PO file, search on the Internet, get to use the following command to delete all the files in the GNOME recycle bin. Sudorm-rf ~ /. Local/share/T
, and if you put it with the system files, it can affect the performance of your system.
16. Quickly close a series of Windows
When a user opens a deep folder through my computer, it opens a lot of windows, which is a hassle to shut down. If the user presses the SHIFT key while closing the bottom window, all windows will be closed at the same time. If you hold down the SHIFT key when you close one of the middle windows, the upper window will be closed, and the underlying window stays the same
presses the SHIFT key while closing the bottom window, all windows will be closed at the same time. If you hold down the SHIFT key when you close one of the middle windows, the upper window will be closed, and the underlying window stays the same
Microsoft this Recycle Bin, the time is long, we inevitably want to give this special object to take a different kind of name, it is not difficult to do this, as long as we open the Registry Editor program, and open the {hkey_classes_root\clsid\[ 645F
Modify the user's environment variablesVI ~/. BASHRC Note the alias of line 5th #alias RM='rm-i'The last line adds the following content mkdir-P ~/. Trash alias RM=Trash alias R=Trash alias RL='ls ~/.trash'alias ur=undelfile Undelfile () {MV-I ~/.trash/[email protected].} trash
How to set the recycle bin in linux and in linux
Modify user environment variables
Vi ~ /. Comment out the alias of row 5th in bashrc # alias rm = 'rm-I 'and add the following content in the last line: mkdir-p ~ /. Trash alias rm = trash alias r = trash alias rl = 'ls ~ /. Trash 'Alias ur = undelfile () {mv-I ~ /.
*:(1) xcopy does not copy system and implied files, it should modify the attributes before copying
xcopy [/y] Overwrite when there is a hint,/y without prompting
If you omit the destination disk or subdirectory name, copy to the current directory
VI. del/p
Plus/p to prompt before deleting
If the subdirectory name is added after the Del, all files under the subdirectory (implied. System. Except for read-only files) are deleted.
Plus/P can be confirmed.
Vii.
displayed:
Does destination specify a file name or directory name on the target
[F = file, d = directory]?
Create a file on the target disk [press] or create a subdirectory [press d]? D key should be selected
Xcopy [/v] with verification
* 1) If xcopy does not copy system or hidden files, you must modify the attributes before copying them.
Whether a prompt is displayed when xcopy [/y] is overwritten, And/y does not contain a prompt
If the target disk or subdirectory name is omitted, copy it to
temporary folder to another disk area in the Open dialog box, and do not leave it in the same area as the system files because the temporary files are small, numerous, chaotic, Can produce a lot of fragmentation, and if you put it with the system files, it can affect the performance of your system.
16. Quickly close a series of Windows
When a user opens a deep folder through my computer, it opens a lot of windows, which is a hassle to shut down. If the user presses the SHIFT key while closing
A problem with the Above design scenario is that you still need a central location where you must know all types of objects: within the Factory () method. If you frequently add new types to your system, the factory () method is modified for each new type. If you're really upset about this, try going one step further and moving all the information about the type-including its creation-into the class that represents that type. As a result, each time you add a new type, the only thing you need to
In Linux, avoid using rm to accidentally delete files-lost memories-blog Bus
Avoid accidental deletion of files with rm in Linux: | category: Linux
Copyright Disclaimer: During reprinting, please use hyperlinks to indicate the original source and author information of the article and this statementHttp://freakrobot.blogbus.com/logs/88281920.html
Because most linux hair styles already use the ext3/4 file system, and because the files deleted by the rm command are not in the garbage bin, the
I. Introduction to the function1. Put the deleted files in the Recycle Bin2. Recovery of deleted files3. Implementation of the Linux RM command function, using almost the Linux system with the RM, command exactly the same4. New features: Rm-l, RM-E, rm-c5. The script checks the sum of the file size in the $home/.trash directory at run time, ifexceeds the maximum capacity, the script automatically returns the first half of the files recorded in the log
1.PrefaceOnce Upon a while, a rm-rf/useless/* command took out the files we needed, and the entire system was killed ,This is not with tears.such as the use of the RM command mistakenly delete the file, we will notice, but we can not guarantee that it will not happen, after all, there is always an accident, then for this situation we are not bound without policy, no! We have a corresponding solution, that is, the use of trash-cli. 1.1
"Xdg_videos_dir = "$ home/videos"
Add the desktop directory, log out of the user, and then log on.
To prevent such accidental deletion in the future, I have to find a way to delete all the files to the recycle bin.Then I went to the Internet to find three methods.(1) Use trash-CLI:This software operates the recycle bin under the command line (its directory is ~ /. Local/share/trash/files ).Installation (in
to delete junk mails that have been used for more than two days is usually good. However, after four days of this business trip, I came back and watched 10 emails, which automatically changed to "junk ", then it is automatically deleted immediately. At that time, I was worried that some important emails were mistakenly deleted as spam.
A burst of Google and Yahoo searches on the Internet showed the Chinese results returned. It is estimated that there is no hope. I try again "Thunderbird recover
Centos rm Recycle Bin
After linux rm deletes a file, it is troublesome to restore it. Even if it is restored, the file name format is changed to a string of numbers.
Modify the environment variable of the root user
Vi ~ /. Bashrc
Comment out the alias for line 1
# Alias rm = 'rm-I'
Add the following content to the last line:
Mkdir-p ~ /. Trash
Alias rm = trash
Alias r =
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