unix and linux commands

OrderThe process communication methods under Linux are basically inherited from the process communication methods on the UNIX platform. The two main players at T-Lab and BSD (UC Berkeley's Berkeley Software Release Center), which have made significant contributions to the development of UNIX, have a different focus on interprocess communication. The former makes

As Linux quickly replaces the server platform with the Unix,unix veteran, there are a number of differences between Linux and UNIX.The idea behind any UNIX version is that the vendor provides all the full service to the customer. Software development in a

Brief introduction The crontab command is common in UNIX and unix-based operating systems, and is used to set periodically executed instructions. This command reads the instruction from the standard input device and stores it in a "crontab" file for later reading and execution. Typically, crontab stored instructions are activated by the daemon, Crond often run in the background, checking every minute for

. At least, the maximum value indicated by unsigned int is used for fail, that is, the business cannot be used. Second, if a macro is added and the return value is unsigned int, it must be treated differently. Do you think it is troublesome to use it? Don't worry about the trouble. Well, let's look at the Win32Socket function. Its SOCKET uses the maximum value represented by the unsigned int as the wrong SOCKET identifier, in fact, the api is designed according to the second method above. No way

Original link Http://kkovacs.eu/cool-but-obscure-unix-toolsBelow are the 28 kristóf Kovács collected under the 28 command line tools ( original link ), some are familiar with, some are very useful, some are not known. These tools are very good, I hope everyone knows. This article is also discussed in Hacker news , you can go to see. I have added the website link and some instructions in the author's original text.Dstat SARIostat, Vmstat, Ifstat three

Landlord rookie, from the "Linux/unix system Programming Manual" to learn, learn the procedure must first run the example to play, but did not know how to do 1 hours in the book example how to run, Baidu does not come out, casually dozen a make order drink a cup of water, found out a xx.a file, the problem solved. Take out and share with you, don't like to Spray, O (∩_∩) o haha ~ Environment: Win7 under VM

15 practical Linux/Unix tape management commands for the system administrator Tape equipment should only be used for regular file archiving or data is transferred from one server to another. Generally, tape devices are connected to Unix machines and controlled by mt or MTCs. We strongly recommend that you back up all data to disks (maybe in the cloud) and tape de

Unix/Linux sync command, unixlinuxsync command Write cache command -- sync After the unix system is started with the reboot command, the system prompts an error message, and some applications cannot work normally. After carefully checking the system files and comparing them with the initial correct backup, we found that some files were indeed damaged and we coul

The purpose of this article is to adjust the UNIX IP stack to more effectively prevent multiple types of attacks today, detailing Describes some of the recommended settings for network services such as HTTP or Routing in UNIX Service systems, where the system This includes the following different UNIX: A. IBM AIX 4.3.X B. Sun Solaris 7 C. Compaq Tru64

format using TAR. The first tape archive begins storage (tar #0) from the physical start of the tape. The next step is the tar #1, and so on.Tape Device name on Unix /dev/rmt/0 or/DEV/RMT/1 or/dev/rmt/[0-127]: A generic tape device name on Unix. The tape is automatically inverted back. /dev/rmt/0n: Feature with no rewind, in other words, after the tape is used, stay in the current state and wa

Odbc|unix| programming Installation, configuration and programming of ODBC under Linux/unix Ziliang (cavendish@eyou.com) July 2002 The main content of this article is to introduce the simple principle of ODBC and how to install, configure and program ODBC under Linux/unix

wrote the driver for Minx for Minx to run on other devices, but Andrew was reluctant to add these drivers to the system in order to ensure the purity of the code. Therefore, students feel very depressed, which includes graduate Linus Torvalds. After careful study of Minix's design ideas, Linus decided to refer to Minix to write an operating system.In 1991, Linus Torvalds developed the Lniux kernel for 386 machines based on GCC and bash after studying the design ideas of Minix.In 1993, Torvalds

Article Title: well-regulated Unix and Linux. Linux is a technology channel of the IT lab in China. Some basic categories, such as desktop applications, Linux system management, kernel research, embedded systems, and open source systems, may be a headache for the difference between

; Troubleshooting NFS: in client execution: example 2:rpcinfo-u 192.168.1.102 portmap//IP addresses are NFS server addresses Rpcinfo-u 192.168.1.102 NFS Rpcinfo-u 192.168.1.102 Mountd Example 3:nfsstat-c server-Side Execution: Example 4:nfsstat-s General Steps for NFS Troubleshooting: 1. Check that NFS client and server communication is normal (ping) 2, check if NFS service is functioning correctly on NFS Servers 3, verify that the/etc/exports file on the NF

Formats of executable files on Unix/Linux platforms Author: Shi Cong 17:24:31 from: ibm dw China This article discusses three main executable file formats in Unix/Linux:. out (compiler and editor output editor and link editor output), coff (Common Object File Format), ELF (executable and ing format executable and link

Deploy the IBMDB2 product-Linux Enterprise Application-Linux server application on UNIX and Linux platforms. For details, refer to the following section. Deploy IBM _ DB2 products on dozens, hundreds, or thousands of clients and servers based on UNIX and

The main content of this article is to introduce the simple principle of ODBC and how to install, configure and program ODBC under Linux/unix. ODBC principle ODBC is the abbreviation for open database Connect, which is the Open-source interconnect, a unified interface standard for accessing databases, presented by Microsoft in 1991, and middleware between applications and database systems. It provides data

; "Src=" http://images2015.cnblogs.com/blog/1089769/201703/ 1089769-20170321200742736-1156458900.png "style=" margin:0px;padding:0px;border:0px; "/>OK, is a socket file, composite expected, according to the previous UNIX domain socket example, Rsyslog should also listen to this file, we take a look at650) this.width=650; "Src=" http://images2015.cnblogs.com/blog/1089769/201703/ 1089769-20170324101520533-1212316745.png "style=" margin:0px;padding:0px;b

online attack password, as Beijing's users need to give priority to other options. For so many intrusion methods, I refer to Mr. H Ackalot, an article by the hacker celebrities, to introduce you to the basic steps of invading the website. The analysis of a part of the home page by the black case can be found that the use of intruders are most interested in Web servers and FTP servers, because relatively speaking this is the simplest two ways. Given the reader's knowledge of the U nix system and

Suppose you are a computer trained, the basic courses of computer science such as data structure, operating system, architecture, compiling principle, computer network you have all repairedI think it can be divided into 4 stages, level from low to highFrom installation using =>linux common commands =>linux system programming + kernel development read Kernel source codeIt is necessary to learn the common