arcade archives

Event: the software package has been updated. Go to the update manager and click Install update. An error occurs.Error message: E: unable to obtain the lock/var/cache/apt/archives/lock-open (11 Resources temporarily unavailable)E: Unable to lock the download directorySolution: Enter the error prompt to search in google. Obtain the first solution, open the terminal, and enter ps-aux to list the processes, as shown inRoot 5765 0.0 1.0 18204 15504? SN ap

Error saving data to database Archives table, please check! Workaround:This bug appears above MYSQL5, the processing method is very simple, the MySQL strict mode is turned off, the method is as follows:Find My.iniWillSql-mode= "Strict_trans_tables,no_auto_create_user,no_engine_substitution"Revision changed toSql-mode= "No_auto_create_user,no_engine_substitution"Can, problem solving ~ "Error saving data to database

RDS for MySQL Archives historical data by partition Original table Partition Stored procedures for partition maintenance Events that call a stored procedure every month with the accumulation of data and the increase of data volume, more and more table volume becomes large, not only affect the execution time of query, but also make management work (such as adding and deleting index) become more complex and difficult.This article descr

resolution is much higher than film and television equipment, after the calculation, femtosecond laser has obtained the human in the laboratory can obtain the world's shortest pulse. Through it, we can see faster, more subtle movements, such as the photosynthesis of green plants, the process of cell division, The process of electrons moving around atoms and so on.However, these processes are not yet able to form images, and femtosecond lasers can only be shown in the form of ripples. However, t

Practice your code skills, complete the projecteuler topic, and make an archival record.Question 1th:If we list all the natural numbers below is multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.Find the sum of all the multiples of 3 or 5 below 1000.Find below 1000 and divide the numbers by 3 or 5 and calculate their and.def multiples_of_3_and_5 (num): sum = 0 for n in xrange (num): If isn't n%3 or not n%5:sum+=n Retu RN sumif __name__ = = "__main__": Print multiples_of

There is a new requirement: PostgreSQL logs in the rsyslog server should be separated, according to priority, that is: Logs of error and warn must be archived in one file; Info and other levels of logs are archived in one file, and logs are automatically cut every hour; Solution: 1. Create the configuration file PostgreSQL. conf in the/etc/rsyslog. d directory. vi/etc/rsyslog.d/postgresql.conf # Define the log storage path Template $templatepostgresql_warn,"/data/syslog/%fromhost-ip%/error.l

asks the user if the action is active before deleting it.-r: Recursive delete.8) MV: Move files and directories, or renameCommand format: MV [-FIU] Source desinationCommon options and Parameters:-F: If the target already exists, no direct overwrite is asked.-I: If the target file already exists, ask whether to overwrite-U: If the target file already exists and the source is newer, it will be updated.9) basename: Get the file name of the pathDIRNM: Gets the directory name of the path10) access t

-b65a-3da35a7f987e Swap swap Defaults0 0Permissions: Hidden properties of a fileChattr+,-, = Add, remove, set-fixedA access time atime unchanged when accessing this files synchronously writes to disk, which is usually asynchronous, that is, sometimes it needs to write to the disk in memory, plus s writes synchronouslyA can only add data, cannot be changed or deleted, only root can be setC Automatically compress files and extract them when readD Skip at DumpI cannot delete, rename, set link, upda

After Outlook deletes or archives a message, why the data file remains the same size. Reason Analysis: Originally, the archive will still retain the original file structure, need to compress to release this part of the space. Compression is usually run automatically in the background when the computer is idle and Outlook is still running. So you can't see the data file getting smaller immediately. Solution: You can manually compress the data files

Turn from: http://linuxtoy.org/archives/9-free-python-books.html The last time I introduced 4 free Perl language programming books, I would like to recommend 9 free Python language programming books to help you learn Python programming. A Byte of Python by Swaroop C H A very concise Python tutorial. "This book will help you learn how to use the Python language, whether you're just contacting a computer or an experienced programmer." "contains Python

This article brings the content is about HTML5 's Webgl3d Archives book Visual Management System realization, has certain reference value, has the need friend can refer to, hoped to be helpful to you. Objective The file management system is to standardize the whole document management through the establishment of the unified standard, including the complete file resource Information Sharing service platform which regulates the document management of

the file name of the execution command directly by using an absolute path or a relative path.This directory (.) is best not to be placed in path.*****************************Archives and Directory Management******************************1. File and catalog view LSls [-ADHILRT] directory name-A: All files, together with hidden files, are listed-D: Lists only the directory itself, not the profile data in the directory-H: List the file capacity in a hum

Brief introduction We studied in Hadoop: (i)--hdfs introduction has said, HDFs is not good at storing small files, because each file at least one block, the metadata of each blocks will occupy the Namenode node memory, if there are such a large number of small files, they will eat Namenode a large amount of memory for a node. Hadoop archives can effectively handle the above issues, he can file a number of files into a file, archived into a file can

together with the attributes of the archive, instead of using the default properties (Backup is common)7) - R: replicate recursively8) -S: Copy as symbolic link file, i.e. fast key mode9) -u: If the target file is newer than the original file7.rm [fir]: Remove files or directories, parameters:-F,Force ignores nonexistent files, does not issue a warning;-I: Ask when delete,-r: recursively Delete, Deleting a directory is often used. 8.MV [-fiu] source file destination file: Move the source file t

. BZIP2 compression efficiency is better than gzip. Instruction is bzip2-z man.config, direct read is Bzcat man.config.bz2, unzip to bzip2-d man.config.bz25. Tar can combine multiple packages into a single file, and also can compress files simultaneously through GZIP/BZIP2 support, in fact, the WinRAR function of Windows also supports. tar.gz file name decompression. The decompression instructions for tar are tar-jxvf/root/etc.tar.bz2.6. The main role of the dump command is to back up the entire

File/modify file Mtime and Atime (YYMMDDHHMM), CTime for current time Umask Umask Default Creation permissions (lost permission values) Umask 022 Modify default Create permission to Rwxr-xr-x Lsattr lsattr XXX List Hidden properties Chattr Chattr +s Add hidden properties each time the modification will automatically sync Chattr-a minus hidden properties can only be added cannot be deleted cannot be modified by the root dedicated Chattr =i Se

Error: E:failed to fetch Http://archive.ubuntu.com/ubuntu/pool/main/g/glibc/libc6-dev_2.19-10ubuntu2.2_amd64.deb could not Resolve ' archive.ubuntu.com 'E:failed to fetch Http://archive.ubuntu.com/ubuntu/pool/main/g/glibc/libc-dev-bin_2.19-10ubuntu2.2_amd64.deb could Not resolve ' archive.ubuntu.com 'E:failed to fetch Http://archive.ubuntu.com/ubuntu/pool/main/g/glibc/libc6_2.19-10ubuntu2.2_amd64.deb could not Resolve ' archive.ubuntu.com 'E:failed to fetch Http://archive.ubuntu.com/ubuntu/pool

# Create an archive table (duplicate table structure and index only) create table orders_2016 like Orders; # Delete all indexes of the archive table (this will increase the insertion speed) # Previous Data import archive table insert into orders_2016 SELECT * from Orders WHERE date 　　MySQL regularly archives data

are required for analysis.Logminer Precautions for use: The Source Library and the mining database must be running on the same hardware platform, Windows cannot be uploaded to Linux for analysis The version of the mining database is greater than or equal to the database version of the source library The character set of the mining database needs to be consistent with the source library or a superset of the source Library Reference Document: Http://www.cnblogs.com/shishanyu

4.2.3 System Management Functional Group The System Management function group is the core part of the backend server software, which is composed of several modules, such as "field Bureau Generation Control", "Game road singles print", "Historical