unix programming book

1. Unix Shell functions A shell is a program that manages processes and runs programs. All the common shells have 3 main functions: (1) running the program; (2) Managing inputs and outputs (3) Programmable The shell is also a programming language with variable and process control. 2. UNIX Process Model A program is a sequence of machine instructions stored in a

UNIX advanced environment programming (5) Files And Directories, unixdirectories 1 File Times Each file maintains three time fields, each representing a different time field. See the following table: Field description: St_mtim (the modification time) records the last time the file content was modified. St_ctim (the changed-status time) records the last time the I-node of the file was modified, such as m

How can I obtain the current UNIX timestamp (UNIX timestamp) in different programming languages )? Java Time Javascript Math. Round (new date (). gettime ()/1000) gettime () returns a value in milliseconds. Microsoft. NET/C # Epoch = (datetime. Now. touniversaltime (

main inside the parameters, a lot of people are confused, the parameters in this is what things! ARGC and argv are a very strange thing for children who are accustomed to Windows. ARGC stores the number of command-line arguments, and the command-line arguments are stored in the argv array. Give me a chestnut and look at the code below.1#include 2 intMainintargcChar*argv[])3 {4 intn =argc, I;5printf"%d\n", n);6 for(i =0; I )7 {8printf"%s\n", Argv[i]);9 }Ten

At the end of last week, I began to read the book Unix/linux System Programming Manual, the weekend time to see the fourth chapter, that this book than directly to see the Linux kernel is better to accept more, because from the code to start, you can better understand, such as the third chapter of the system call to ex

status NBSP; lock Type advantages cons applicable range biased lock locking, unlocked unwanted amount External consumption thread competition when there is additional lock cancellation consumption Only one thread accesses the scene of the synchronization block lightweight lock competing threads do not block and incr

process of restarting, the customer did not send text) after restarting, the customer sends the text, but in the server TCP has lost the previous connection information, so in response to an RST, The call returns Econnreset.6) Server main machine: When the normal shutdown, the INIT process usually first send sigterm signal to all processes (can be captured, the default action is to terminate the process, only ignored or processed after no termination, will be terminated by Sigkill), and wait fo

source code is in appendix B. Therefore, one method is /Root/apue.2e/include/apue. h directly copy to/usr/include. The err_sys function is also in appendix B. The same method is to create a new one in/usr/include.My_err.h file, put Figure B .3. error functions that output to StandardThe error content is copied in. In this way, you only need to add: # include"My_err.h .. Location: http://www.linuxdiyf.com/bbs/thread-90655-1-8.htmlApue2) Source code CompileError Handling Method I believe that man

established successfully or an error occurs. For a non-blocking socket, if the connect function is called,-1 (indicating an error) is returned, and the error is einprogress, indicating that the connection is established, started, but not completed. If the return value is 0, the connection has been established, this usually occurs when the server and the customer are on the same host) D) There is a socket error to be processed. Write operations on such a socket will not be blocked and return-1 (

Socket interface (socket interface) is a set of functions that are combined with UNIX I/O functions to create network applications. Socket interfaces are implemented on most modern systems, including all UNIX variants, Windows, and the Macintosh.1. basic structure of socketsstruct SOCKADDRThis structure is used to store socket addresses.Data definition:1 struct 2{3short * /*/4 Char sa_data[]; /

In Unix, the C programming tool set-general Linux technology-Linux programming and kernel information. The following is a detailed description. In fact, programming in Unix C often only requires code. It seems that there is no better integrated development environment IDE, t

The following describes how to program the network with simple but typical client and server programs. This section describes the client, a client used to connect to and read the time sent by the server. This involves writing code, so we need Build a UNIX Network Programming Environment The UNIX system is not installed, the system is not easy to obtain, and ther

The book "Advanced Programming in UNIX environments" comes with many small and exquisite programs. When I read this book, rewrite the code in the book according to your own understanding (most of them are on the copybook) to deepen your understanding (it's too difficult to r

The book "Advanced Programming in UNIX environments" comes with many small and exquisite programs. When I read this book, rewrite the code in the book according to your own understanding (most of them are on the copybook) to deepen your understanding (it's too difficult to r

The book "Advanced Programming in UNIX environments" comes with many small and exquisite programs. When I read this book, rewrite the code in the book according to your own understanding (most of them are on the copybook) to deepen your understanding (it's too difficult to r

The book "Advanced Programming in UNIX environments" comes with many small and exquisite programs. When I read this book, rewrite the code in the book according to your own understanding (most of them are on the copybook) to deepen your understanding (it's too difficult to r

The book "Advanced Programming in UNIX environments" comes with many small and exquisite programs. When I read this book, rewrite the code in the book according to your own understanding (most of them are on the copybook) to deepen your understanding (it's too difficult to r

-stream sockets are similar to TCP sockets: They all provide a byte-stream interface with no record boundary for the process; In Unix domain byte-stream sockets, a econnrefused error is returned immediately if the queue for the listening socket is found to be full when connect is called. In the case of TCP sockets, the TCP listener ignores these incoming SYN connection requests, and the TCP client will re-send several SYN message segments;

The open Server problem in "Advanced Programming in unix environment"-general Linux technology-Linux programming and kernel information. The following is a detailed description. [I = s] This post was last edited by qq278245093 I am reading "Advanced Programming in unix envi

Recently, I finally bought the UNIX bible "Advanced Programming for UNIX environments. After reading the book today, I want to take out the source code in the book and compile it on my own to see what the results are. I found that the compilation was not smooth. First, let'