unix egrep

"Unix environment advanced programming" chapter 3rd-file I/O, unix environment Advanced Programming1. Introduction For most Unix files, I/O only requires five functions: open, read, write, lseek, and close. The functions described in this chapter are often calledI/O without buffering. TermsWithout BufferingIt means that the user's process will not automaticall

I recently studied Unix programming art. The first chapter is very good. It tells us a lot about the history and philosophical basis of Unix. The most important part is the 17 design principles mentioned. I know many principles, but I have never summarized them in such detail. Most of the content below comes from the book "Unix programming art", which is

I have been engaged in pythonWeb development for a year. Now I am confused. I mainly work on curd, that is, how to obtain data, and then present it to the front-end page. The framework uses django, optimization means adding memecache. Pay attention to this when querying the database. Currently, there are a lot of tangled issues: 1: the programming of process threads, how to use it in practice 2: network programming problems, the design and implementation of high-performance servers, I can't unde

Introduction: Do you know that blogging works in conjunction with UNIX (R)? UNIX's built-in Web and text processing tools enable you to create blogs quickly and easily. Explore some handy tips for improving the creative skills of UNIX blogs. UNIX® has a lot in common with web blogs or blogs. In addition to being the native environment for most Web servers and th

[UNIX Network Programming] basic TCP socket programming and unix Network Programming The concurrent server described in this chapter is a single customer Process Model Implemented by fork. The following is the socket function of the basic TCP client/server program (the schedule of some typical events ): TCP status transition diagram: 1. socket functions: # Include Family: protocol family (AF_INET, AF_

Several lines of code to call functions in the unix pipeline style, and several lines of unixAfter using linux, you basically know its pipeline, which is to use the output of a program or command as the input of another program or command. To put it bluntly, let's look at how python can be used to call functions in the unix pipeline style. #coding=utf-8class Pipe: def __init__(self, func): self.f

A simple UNIX-Linux CFS annotation, unix-linuxcfsThis series is named simple UNIX, but it also includes the details of various UNIX-like systems. This series of articles are based on my study notes over the past few years, focusing on the analysis of various UNIX,

This configuration instance pro-test success, mutual encouragement, there are questions to everyone message.Environment: VMware + unbuntu 14.04For UNIX network programming, programming the first UNIX program encountered problems, can not contain unp.h file, this feeling and apue.h almost, but here need to compile source code, for later convenience, now tidy up as follows:The main 2.1 is to generate LIBUNP.A

extension of single UNIX specification provides the Getrlimit (2) function, which can be used to return the maximum number of descriptors that a process can open at the same time.Options:If we want to write some portable applications first, and these programs are related to the supported options, then a portable method is required to determine whether a given option is supported.As with restrictions, SUS defines three processing methods: Com

# CD/USR/SRC # tar Xvzf apache_1.3.6.tar.gz (Generate apache_1.3.6 directory) # tar Xvzf php-3.0.8.tar.gz (Generate php-3.0.8 directory) # CD apache_1.3.6 #./configure--prefix=/usr/local/apache (Set the Apache installation directory to/usr/local/apache) # CD php-3.0.8 #./configure--with-mysql=/usr/local/mysql \ --with-apache=. /apache_1.3.6 \ --enable-track-vars (configuration support MySQL, as Apache function module, tracking variable valid) # make; Make install In the Configure parameter above

Build an advanced programming and learning environment in UNIX --- apue. h, unix --- apue. h This course has just learned advanced programming in UNIX, but has encountered many problems when setting up the programming environment of this book. Fortunately, there are various solutions on the Internet that allow me to finally solve the problem. I would like to than

PROFTPD is a UNIX platform or Unix-like platform (such as Linux, FreeBSD, etc.) FTP server program, it is under the Free Software Foundation's copyright notice (GPL) under the development, release of free software, that is, anyone to comply with the GPL copyright notice, Can modify the source start code at will. The PROFTPD design goal is to implement a secure and easily configured FTP Server. At present

UNIX advanced environment programming (14) file IO, unix programming 14io Spring is coming. In addition to work and study, everyone must exercise and exercise more. Haidao, which was shot in haidao Huaxi, yuandu ruins park last weekend. Go to the topic. O_DIRECT and O_SYNC are flags that the system calls open. Open a file with a specific file descriptor by specifying the flag parameter.These two flags hav

Unix system introduction, unix Operating System I. Basic Knowledge 2. solaris installationReference: http://wenku.baidu.com/link? Url = install the Solaris10 ZF6WHQdnzOGc1why-ke86hU6JQfgsvjHP2s7Vek1AAFeu1aY_QmKPlovF2e7F-L94I7pG4yMEOhN5s5mxYuMfhspo_5g9pcWMOHVzJi9USy under the http://wenku.baidu.com/link Virtual Machine? Url = installation _ Virtual Machine installation of the solaris10 System Image File H

[UNIX] the generation of an executable file to the distribution (on) of processes in the memory/the generation of executable files, unix executable files From the generation of an executable file to the distribution of processes in the memory (on) Generation of executable files To generate executable files for a source program, it must be implemented through the compiler. the compiler translates the high-le

Article Title: UNIX and UNIX-like system security check notes. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. Here are some personal experience notes. I believe it is useful for UNIX or U