how to open big text file

the general steps are as follows:(1) Open a file, make the disk file and file stream object to establish contact;(2) writes data to a file as text, just as cout is used to send data to the monitor. The data can be read from this

traffic" ' Import os,os.path,re, Time;sourcefilelist=os.listdir (' files/mapfiles/'); #获取小文件的map结果文件名列表targetFile = ' files/reduceresult.txt '; # Set Final result save file tempdict={}; #临时字典 P_re=re.compile (' (. *?) (\d{1,}$) ', Re. IGNORECASE); #利用正则表达式抽取资源访问次数for eachfile in Sourcefilelist: #遍历map文件 currentfile=open (' files/mapfiles/' +eachfile, ' r ', encoding= ' UTF8 '); #打开当前文件 Currentline=currentf

New people began to learn to write blog, do not like to spray. Welcome to the big guys to criticize, appreciate disrespect. I did 10 months ago in C #, and later to the Java self-study also has a period of time, there is the basis of object-oriented learning is very fast. Today suddenly whim, want to operate the Java file read (have to say before they are very lazy, can Baidu things themselves do not want t

PHP.ini can't upload big file perfect solution 1, open the php.ini (open the way needless to say, Baidu a lot of) 2. Find Post_max_size The form submits the maximum number, which is not a restriction on the size of an individual file to upload, but rather a restriction on

1, log file is too big the first step: Stop all processes of Apache service, delete the Error.log, access.log files under the/var/log/httpd directory Step two: Open the/etc/httpd/conf httpd.conf configuration file and locate the following configuration Errorlog Logs/error.log put the above comment off and change it to

ls Command View a directory or file Syntaxls [options] (PATH)"Common Options"-L Long text view file =windows Right-click Property-D View directory PS: General mate-L use-A To view all files under directory (including hidden files)-I display index number (inode)-F to file and identify-T to

Python learning-big file segmentation and mergingIn our daily life, we will encounter the following situation: you have downloaded a relatively large game (assuming there are 10 Gb) and want to play with your classmates, you need to copy the game to him. Now there is a problem: the file is too large (we don't consider whether you have a mobile hard disk or someth

is that it has a set of its own message pump mechanism, which does not require us to manually write messages again (the non-modal dialog itself receives the message). Interception of user messages, depending on the various stages can be added to our own operations, such as initialization and so on. 2) Gets the pidl of the specified path: The target path of the Shell object identifier, with which to continue the subsequent processing, here is obtained in two ways, one is to use IFileDialog

This document describes how to operate a hadoop file system through experiments. Complete release directory of "cloud computing distributed Big Data hadoop hands-on" Cloud computing distributed Big Data practical technology hadoop exchange group:312494188Cloud computing practices will be released in the group every day. welcome to join us! First, let's loo

for some scenarios, such as virtual machine active image storage, or virtual machine hard disk file storage, as well as large data processing and other scenarios, object storage is stretched. The file system has outstanding performance in these areas, such as Nutanix's NDFs (Nutanix distributed Filesystem) and VMware's Vmfs (VMware Filesystem) perform well in virtual machine image storage, Google

What file is the php file? How does the php file open? PHP full Jane hypertext Preprocessor Chinese name is a hypertext preprocessor, it and C,c++,java,perl can do some algorithmic operations, while PHP is mainly used in Web application development, PHP entry threshold is lower, easy to learn, use a wide range, Mainly

Sometimes, we need to keep some big-head software or data packets in a cloud disk. However, the cloud disk upload data have a single file size limit, take Baidu Cloud, ordinary members upload a single file size limit of 4GB. In the case of not registering fee members, the use of the production of a share of BT seeds and network offline BT download combined, can b

What if the Office 2016 for Mac file is too big? recently, Microsoft has launched the latest version of Office software: Office2016, the biggest change in this version is not only in Microsoft's operating system: such as: Win7, Win8, win8.1, WIN10 and other systems installed, and support Apple's iOS system, This means that Office2016 can also be easily used on Apple computers. However, the Office2016 Mac ve

To read this article, first refer to:input, output, and documentation for C + + learning notesTest data:1 /*reading a TXT file to a two-dimensional array*/2#include 3#include 4#include 5#include string>6 7 using namespacestd;8 9typedef vectorint> > D2array;//two-dimensional arraysTentypedef vectorint> D1array;//one-dimensional arrays One A - intMain () - { the introw =Ten; - intCol =Ten; -Ifstream input ("e:\\c++\\c++ code\\item_basedcf\\dat

simple scripts, only for test learning, and may have bugs , can not be used in production environment, if there are errors, please leave a message. Update : The script executed on SQL Server 2008R2 may report the following error: ' CONCAT ' is not a recognized built-in function name. Because the concat function is used in the script, this function is a newly introduced function of TSQL in SQL Server 2012, as detailed in: https://docs.microsoft.com/en-us/sql/t-sql/functions/ Concat-trans

Baidu to promote its network disk, for more than 2G of large files of the network to stop the browser and download tools to download, download Baidu Network disk large file must first download the installation of Baidu Cloud Butler, otherwise you can not download, then we have no method, do not need to install Baidu Cloud Butler and can directly download Baidu network disk large file it? The answer is yes,

only need to use the Bootctl Install command to complete the boot loader installation. It will place two files in the/boot directory/boot/efi/systemd/systemd-bootx64.efi 　　/bootefi/boot/bootx64. EfiAfter you have modified the appropriate configuration file, you can use:/boot/loader/loader.conf /boot/loader/entries/arch.conf　　2. Get ready to try, efistub:https://wiki.archlinux.org/index.php/efistub.This is also relatively simple.The first trick: dir

SharePoint 2010 Database log files Sharepoint_config_log It's too big, G-compressed, got 100M.Method: Open SQL Server Management Studio, Query window input commandUse Sharepoint_config;GO--Set the database to the simple recovery model,ALTER DATABASE Sharepoint_configSET RECOVERY Simple;GO--Compressed to 100MDBCC shrinkfile (Sharepoint_config_log, 100);GO--RecoveryALTER DATABASE Sharepoint_configSET RECOVERY

Php_error.log file What's going on? What is the use of the Php_error.log file? Why is it so big to erase? ------Solution-------------------- After you stop Apache, delete the file. After deletion should be re-established, after the establishment to see the size of the file

)); - while(dataToRead >0) - { the if(response.isclientconnected) - { -Length = istream.read (buffer,0,100000); -Response.OutputStream.Write (Buffer,0, length); + Response.Flush (); -Buffer =Newbyte[100000]; +dataToRead = dataToRead-length; A } at Else - { -dataToRead =-1; - } - } - } in Catch(Exception ex) - { to stringMessage =