Reproduced from: http://www.cnblogs.com/venow/archive/2012/11/30/2790031.html
Definition:
Epoll is the Linux kernel to handle a large number of handles to improve the poll, is the Linux multiplexing IO interface select/poll enhanced version, it
Directory1, about search;2, search the file name to find files;2.1 Find;2.2 Locate2.3 Whereis and which2.3.1 where2.3.2 which3, in a file or output to find;4, about this article;5, reference documents;6, related documents;++++++++++++++++++++++++++++
System
# uname-a # View kernel/operating system/CPU information
# head-n 1/etc/issue # View operating system version
# cat/proc/cpuinfo # View CPU Information
# hostname # View computer name
# LSPCI-TV # list all PCI devices
# LSUSB-TV # list all
Linux Basic Setup command after installation date Print or set the system date and time pwd return working directory name and print name of current/working directory USERADD&NB sp; Create a new user or update
Since wine 1.3 uses winepath instead of wineprefixcreate, it prompts wine to be too old and wineprefixcreate wrong when installing Ies4linux. You can easily resolve IE6 installation problems by modifying the functions.sh and install.sh of Ies4linux 2
find a file with a date of the day
Skill Manager (2000-12-22-23:24)return 〗〖 Forwarding
A= ' Find ~-print ' | Ls-l--full-time $A 2>/dev/null | grep "June 27" | grep 1998Linux commands are very powerful.Write the following script
Modify Maximum value echo "fs.file-max=65535" >>/etc/sysctl.conf sysctl-p
1), use the ulimit-a command to view the Ulimit settings, use the command to set the Ulimit property directly, but if you need to set the permanent entry into effect, you can
Set Ulimit value (number of Linux file handles) permanently in effect
Inux default number of open files Linux defaults to 1024 open files, through ulimit-a You can view open files
Modify this limit to use Ulimt-shn 65536
The following settings
I recently watched "Uncle Bird's Linux private dish", because he is Taiwanese, so the way of expression and the mainland is not the same, the Taiwanese said the file is basically equal to what we say the document.
When you create a new file under
Cpu:intel (R) Xeon (r) CPU E5620 @ 2.40GHz
Hard drive: 900G
Memory: 12G
Operating system: CentOS release 6.4 (X86_64bit)
1 Check basic requirements (for a cool server, this is definitely a requirement, you can skip)
Memory size
grep
Oracle database has views, Linux has links
The LN directive can be implemented to create links to files, folders, and similar shortcuts to Windows
The most critical parameter-S, the-S is the meaning of the Code name (symbolic).
such as: Ln-s/home/
My Linux use is Git is a key installation, together with the LNMP environment.
1 if SSH is not installed, use the following instructions
sudo apt-get install SSH
2 check SSH public key
The. ssh file is a hidden file so you can see it with the Ls-a
1. Get installation files: http://www.php.net/downloads.php php-5.3.8.tar.gz
To obtain the support files needed to install PHP: http://download.csdn.net/download/netlong339/1351852 libxml2-2.6.32.tar.gz
2. Install LIBXML2
1 tar zxvf
Phpredis in Php7, PHP5 under a different version of the fork may be compiled errors, so before installing please see what version of their PHP.
My Redis is in the redis3.2.3 version.
Use Phpinfo () to view the installed PHP information.
Confirm that
The code under Windows is as follows
Server.cpp #include #include #define IP "127.0.0.1" #define PORT 8888 #pragma comment
(Lib, "Ws2_32.lib") using namespace std;
char* GetTime ();
int main () {wsadata wsadata;
WORD Ret; if (Ret =
First, view the CPU
View the number of physical CPUs#cat /proc/cpuinfo |grep "physical id"|sort |uniq|wc -l
See how the CPU is a few cores#cat /proc/cpuinfo |grep "cores"|uniq
View the number of logical CPUs#cat /proc/cpuinfo |grep "
1. IntroductionFTP is the abbreviation for file Transfer Protocol (document Transfer Protocol), and Chinese is called "Interfax protocol". Used for two-way transmission of control files on the Internet. At the same time, it is also an application
installation package for Linux under JDK:A). Bin Package (Jdk-6u45-linux-i586-rpm.bin)b). tar.gz Bag (jdk-8u144-linux-i586.tar.gz)c). RPM Package (jdk-7u80-linux-i586.rpm)2.Linux installation of the JDK:A). bin package:Only
Tagged with: code too bin str ORC file CTI BSP 6.21. installation package for Linux under JDK:A). Bin Package (Jdk-6u45-linux-i586-rpm.bin)b). tar.gz Bag (jdk-8u144-linux-i586.tar.gz)c). RPM Package (jdk-7u80-linux-i586.rpm)2.Linux installation of
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