dev tour

nhibernate Tour Series article navigationPromotional LanguageNHibernate, NHibernate tutorial, NHibernate Primer, NHibernate download, NHibernate tutorial Chinese, NHibernate instance, NHibernate2.0, NHibernate2.0 tutorial, NHibernate Tour, NHibernate toolsMy nhibernate all the articles in http://www.cnblogs.com/lyj/category/129155.htmltour guideNHibernate is porting the hibernate core of Java to the Microso

Linux empty device file and redirection Output/input redirection>>> File descriptor (file descriptor), which is represented by a number (usually 0-9.Common file descriptors are as follows:Default file descriptor name0 standard input stdin keyboard1. stdout screen output2. stderr screen output due to standard errors /Dev/null indicates an empty file device.1 indicates the system standard output. The default value is 1.>/

there is a device file FB * under/dev/. This is a special file of the character class.Code:Ls-L/dev/fb0 CrW-RW ---- 1 root video 29, 0 Jan 27 :32/dev/fb0If you do not have this file, you can also find other files such as/dev/Fb1,/dev/fb2.. If you cannot find these files, yo

In embedded arm development, when making the root file system with BusyBox, one of the directories that must be built is the/dev directory. This directory is important to all users because the directory contains all the external devices used in all Linux systems, that is, all the device nodes. When building the/dev directory, there are two approaches: static build and Mdev Device management tool building.

/Dev/null2 gt; amp; 1 today, a friend suddenly saw the following content in his own Linux maintained:/var/spool/cron/root: www.2cto. com3019 ***/usr/bin/** dcon. sh gt;/dev/null2 gt; amp; 15923 ** 1-7/home /... /Dev/null 2> 1 details today a friend suddenly saw the following content in his own Linux maintained:/var/spool/cron/root: www.2cto.com 30 19 ****/u

Shell gt;/dev/null2 gt; amp; 1 details shell may often see: gt;/dev/null2 gt; amp; the result of the 1 command can be defined in the form of % gt;, where % gt; indicates the file descriptor. We combine this command: gt;/dev/null2 gt; amp; 1 split into four parts for analysis: 1: first... shell ">/dev/null 2>

Transferred from: http://blog.csdn.net/rockrockwu/article/details/7357648System boot process platform device, the driver registration is complete, why in the/dev directory is automatically created a good device node?The Automatically created device node in the/dev directory can be passed class_create () and then Device_create (). But in trackingKernel platform registration process can be found, in fact, the

The "Digest"/dev/mem is a full image of physical memory that can be used to access physical memory, and the general usage is open ("/dev/mem", o_rdwr| O_sync), then mmap, then you can use the Mmap address to access the physical memory, which is actually a way to implement the user space driver. http://blog.csdn.net/wlp600/article/details/6893636# 1, user space-driven advantagesThere are severa

This article consists of two parts: 1. Process 2 of generating libmysql. A for DEV-C ++. Devc ++ in Windows C Language Access MySQL database environment configuration 1. The process of generating libmysql. A for DEV-C ++ aims: Because DEV-C ++ uses GCC, MySQL's libmysql. dll only supports visual stdio. Therefore, libmysql. A needs to be generated from libmysql.

When Linux runs the partprobe command, it encounters Unable to open/dev/sr0 read-write (Read-only file system), partprobesr0 When using fdisk to create a partition, we will use the partprobe command to allow the kernel to re-read the partition information to avoid restarting the system. However, the following error message "Warning: unable to open/dev/sr0 read-write (Read-only file system ). /

First, partition/dev/sdb:[Root@111cn.net/] # fdisk/dev/sdb # enter this deviceCommand (m for help): p # View partitions/Dev/sdb1 1 500 4016218 + 83 Linux/Dev/sdb2 501 1000 4016250 83 Linux/Dev/sdb3 1001 1305 2449912 + 5 ExtendCommand (m for help): d # delete a partitionParti

This article was reproduced from: http://blog.csdn.net/u013686019/article/details/50165059[HTML]View PlainCopy android:4.4.4 First, the problem analysisWhen the USB printer is plugged into an Android device, there is no printer node (/DEV/USB/LP0) generated in the System/dev directory.The first reaction is to check the printer device and access the Ubuntu-equipped PC, normal: /

// ================================================ ======================================== // Title: // The simplest configuration of qt4 for Dev-CPP // Author: // Norains // Date: // Monday 5-November-2007 // Environment: // Windows XP // ================================================ ======================================== There are a lot of articles on how to configure the QT environment in Dev-CPP,

Open Virtual Machine Discovery instance does not come up[Email protected] ~]# su-oracleSq[[email protected] ~]$ sqlplus/as SYSDBASql*plus:release 11.2.0.4.0 Production on Tue 2 14:59:54 2016Copyright (c) 1982, Oracle. All rights reserved.Connected to an idle instance.[Email protected] Odb>startup nomoutSp2-0714:invalid combination of the STARTUP options[Email protected] ~]$ oerr ora 00084500845, 00000, "Memory_target not supported in this system"*cause:the memory_target parameter is not supporte

/dev/null, from the name can be clearly seen as an empty file (write to/dev/null all lost, read/dev/null when you return to EOF), then you will be very puzzled, what is the use of him, please see below to listen to me, perhaps you have seen in a lot of scripts Dev/null, the specific summary of several common uses. p

1. Interpretation 1 >/ DEV/null 2> 1: redirect all standard output and error output to/dev/null, that is, discard all generated information. command> file 2> file and command> file 2> 1 are different. first, command> file 2> file means to send the standard output information and error output information generated by the command to file. Command> file 2> file: Both stdout and stderr are di

In Linux, ">/dev/null 2> 1" is often encountered in both crontab and Common commands ". For example, in a crontab job, if you do not want to send an email, you can use either of the following methods: First, set mailto = "" to null. [[emailprotected] etc]# cat crontabSHELL=/bin/bashPATH=/sbin:/bin:/usr/sbin:/usr/binMAILTO=""HOME=/# run-parts01 * * * * root run-parts /etc/cron.hourly02 4 * * * root run-parts /etc/cron.daily22 4 * * 0 root run-parts

Introduced/ dev/shm/ is a device that uses the Tmpfs file system, which is actually a special file system. the default size in Redhat is half of physical memory, so that time is not mkfs formatted. TMPFS is a memory-based virtual file system on the Linux/unix system .TMPFS can use your memory or swap partition to store the file ( that is, its storage space in virtual memory , the VM consists of real memory and swap ). Thus, TMPFS primarily stores s

Introduced / dev/shm/ tmpfs file system is actually a special file system. redhat use without mkfs formatted. Tmpfs is a memory-based Linux/unix system. Virtualfile System. TMPFS can use your memory or swap partition to store files (that is, its storage space isVirtual Memoryin, the VMbyReal Memoryand theSwapcomposition). Thus, TMPFS primarily stores staged files. It has the following 2 advantages: 1. The size of the dynamic file

Transferred from: http://loofeer.blog.51cto.com/707932/791065The default system will load/DEV/SHM, which is called TMPFS, some say with RAMDisk (virtual disk), but not the same. Like a virtual disk, TMPFS can use your RAM, but it can also be stored using your swap partition. And the traditional virtual disk is a block device, and requires a command such as MKFS to really use it, TMPFS is a file system, not a block device; you just install it and it's