r web dev

[Translated from mos] When Oracle software is installed, the/dev/null0 file is created ., Mosnull0When Oracle software is installed, the/dev/null0 file is created.Reference Original:File/dev/null0 Is Created After Installation Of Oracle Software (Doc ID 1322550.1)Applicable:Oracle Database-Enterprise Edition-Version 10.2.0.1 and laterInformation in this document

1. Generate Package.json in the project: Enter NPM init in the project root directory and enter the appropriate information as prompted. (You can also not generate a Package.json file, but Package.json is useful, all suggestions are generated)2. Installing WebpaackA. Installing WEBPACK:NPM install WEBPACK-G in the globalB. Install webpack into the project and write Webpack to Package.json devdependencies: Go to the project root and enter NPM install Webpack--save-

Oracle11g AMM memory management mode is to use devshm, so sometimes modify MEMORY_TARGET or MEMORY_MAX_TARGET will have a ORA-00845 error, in the security Oracle 11g AMM memory management mode is to use/dev/shm, so sometimes modify MEMORY_TARGET or MEMORY_MAX_TARGET will have a ORA-00845 error, in the security In Linux, the following error occurs when Oracle 11.2.0.4 starts an instance:SQL> startup nomount pfile =/u03/app/oracle/11.2.0/db/dbs/ini

Webpack-dev-server Webpack-dev-server is a small node.js Express server that uses Webpack-dev-middleware to serve the Webpack package, in addition to this alien, It also has a miniature runtime that connects to the server via Sock.js. Let's take a look at the following configuration file (Webpack.config.js) var path = require ("path"); Module.exports = { ent

we often df–th check the disk capacity in daily operation, so what is the role of /dev/shm ? $ df-th File system type capacity used available % mount point /dev/sda2 ext3 57G 32G 23G 59%/ /dev/sda5 ext3 476G 341G 111G 76%/var /dev/sda1 ext3 190M 29M 153M 16%/boot /

VirtoCommerce2.6 was released on December 22, 2015 due to the official addition of some c#6.0 features, and we used the VS2013 development environment (Microsoft has stopped supporting c#6.0 in VS2013), in order to support C # 6.0 it is best to download VS2015 (for the time being not ready for the team to upgrade to VS2015), so the Virtocommerce team submitted issue (details https://github.com/VirtoCommerce/vc-community /issues/197), the Virtocommerce team has been modified in Development Branch

A gb storage space is shared on the storage and mapped to the Linux system. The environment consists of two nodes. I. Test 1: Mount directly Format with fdisk as follows: [Root @ Rac1 u01] # fdisk-l ...... Disk/dev/SDK: 536.8 GB, 536870912000 bytes 255 heads, 63 sectors/track, 65270 Cylinders Units = cylinders of 16065*512 = 8225280 bytes Device boot start end blocks ID system /Dev/sdk1 1 65270 524281243 +

Excerpt from: http://miaozk2006.blog.163.com/blog/static/3824705820111028183996/First,/dev/shm/Introduction:/dev/shm/is a very useful directory for Linux because it is not on the hard disk, but in memory. Therefore, under Linux, it is not necessary to build RAMDisk, the direct use of/dev/shm/can achieve a good optimization effect.One of the/

This article goes from http://www.kissyu.org/backgroundWe can often find such statements in a shell script >/dev/null 2>1 . Before I did not go into the role of this command, copy replicable, until last week I wrote this order accidentally 2>1 >/dev/null , a little problem, I began to understand the "mystery" behind the order.Shell Redirection IntroductionJust like the program we write, a program handles th

1.Linux composition kernel, shell, tool program has Sh.bashAn example!#/bin/bashEcho 'Before execution chmod +xExecution./2. a little trick cp/dev/null/var/log/apache2/access.logUse/dev/null to apache2 log files in the clear sky Note: Think of /dev/null as a "black hole". It is very equivalent to a write-only file. All content written to it is lost forever. and t

First,/dev/shm theory The kernel configuration in the default Linux distribution will open Tmpfs and map to the SHM directory under/dev/. You can view the results through the DF command. /dev/shm/is the next most useful directory for Linux because it's not on the hard drive, it's in memory. Therefore, under Linux, there is no need for a lot of trouble to build

Environment: VMware WorkstationCentos7.2 x64A failure occurred:Divide two partitions on two disks to do PV (physical Volume):Modify two partition ID to 8ePvcreate/dev/sdb7/dev/sdc7Can ' t open/dev/sdb7 exclusively. Mounted filesystem?Because these two disks were previously used for soft Raid5, uninstall RAID5 First and then delete them.Umount/

最近想将服务器的本地硬盘通过LVM来灵活管理，具体问题如下： [[emailprotected] ~]# pvcreate /dev/sdbDevice/dev/sdb not found (or ignored by filtering).[Email protected] ~]# lsblkNAME maj:min RM SIZE RO TYPE mountpointNvme0n1 259:0 0 2.9T 0 diskSDA 8:0 0 744.1G 0 disk├─SDA1 8:1 0 5G 0 part/boot└─sda2 8:2 0 739.1G 0 part├─VOLGROUP-LOGVOL01 (dm-0) 253:0 0 390.6G 0 LVM/└─volgroup-logvol00 (dm-1) 253:1 0 260G 0 LVM [SWAP]SDB 8:16 0 21.8T 0 d

A 500G space is shared on the storage, mapped to the Linux system offering, and the environment is made up of 2 nodes. one. Test one: Direct Mount After the format of Fdisk is as follows: [Root@rac1 u01]# Fdisk-l ...... disk/dev/sdk:536.8 GB, 536870912000 bytes 255 heads, Sectors/track, 65270cylinders Units = Cylinders of 16065 * 8225280bytes Device Boot Start End Blocks Id System /DEV/SDK1 1 65270 5242812

Under Linux, the/dev directory is important and the various devices are below. Here's a brief summary:DEV is the acronym for Devices./dev This directory is important for all users. Because this directory contains all the external devices that are used in Linux systems . But this is not the driver for the external device , This is not the same as the Window,dos operating system . It is actually a port that a

Webpack is a packaged Web project tool that can implement css,js,less,cass,html encryption, Minify, combined with webpack-dev-server hot deployment, very convenient for front-end page and Nodejs development.WebpackInstallation methodNPM Install Webpack--save-devNPM Install Webpack-dev-server--save-devExecuting webpack requires a configuration file Webpack.config.

Control terminal (/dev/tty) The console terminal (/dev/ttyn,/dev/console) can be switched using ALT + [F1-F6] keys Virtual terminal (/dev/pts/n) Pseudo Terminal in xwindows Mode Q: What is/dev/console?A:/dev/console refers to

Standard output input device stdinDetailed analysis of Linux shell data redirection (input redirection and output redirection). They correspond to several special file descriptors, FD0,FD1,FD2 (Stdin,stdout,stderr)Such as:[Email protected] shell]$ Cat>teststdinTest#ctrl +d#cat从/dev/stdin get the data and then the standard output, the input to the Teststdin file[email protected] shell]$ cat TeststdinTest[Email protected] shell]$ Cat>teststdinTest#ctrl

Transfer from http://blog.chinaunix.net/uid-25100840-id-3271224.html a few days ago interview has such a question, more strange: Explain the meaning of >/dev/null 2>1: I was scratching, also did not think out, wrote a clear buffer, hehe online search, as follows: http://wangqiaowqo.iteye.com/blog/1354226 but I only looked at the following paragraph, the back did not see {shell may often see: >/dev/null 2>1T

Under Linux, the/dev directory is important and the various devices are below. Dev is the abbreviation for device, which means devices. /dev This directory is important for all users, because this directory contains all the external devices used in the Linux system.But here is not the driver for the external device, which is not the same as windows, it is actuall