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Basically all system calls return 0 or positive numbers when they succeed, and negative values are returned when they fail. The advanced operation of the stream poll the format of the system call #include <stropts.h> #include <poll> int poll (fds,nfds,timeout) struct POLLFD fds[]; * * Flow group description structure/unsigned long Nfds; /* Flow number */int timeout; ...

LRC is the linux Resource compiler abbreviation, is a Linux resource compiler. When you install and use a resource program, you can package multiple files into a single file (such as graphics and sounds used by the game). Its constituent parts include a command-line tool (LRC), a resource pool (LIBLRC), and the extraction of resources from the compiler-generated files. LRC 0.8 This version allows compression as a whole resource file, supporting individual file compression. Software Information: HTTPS://BITB ...

To complete this chapter, you can do the following: Check http://www.aliyun.com/zixun/aggregation/18415.html > Network connection errors using the following command: Lanscan lanadmin Linkloop arp ping netstat-i netstat-a netstat-r hostname nslookup 1. Network error-checking tool in Unix ...

To complete this chapter, you will be able to do the following: Use the DF and Du commands to monitor the size of the file system's effective space to clean up the filesystem space by clearing unused files and core files to clean up the var file system by trimming the log files to extend a volume group from the command line to extend a logical volume from the command line Extend a file system from the command line 1. Monitoring disk usage Use the DF command to check the file system for valid space. # DF filesystem Kbytes used av ...

To complete this chapter, you can do the following: Configure software and drivers for a newly installed network card. Configures and browses the host name of the system as a command line. Configures and browses the IP address of the system on a command-line basis. After installing a new NIC, modify the Hosts file. 1. The Network Diagram system administrator should have a network map that includes all of the LAN hardware he manages. This network diagram should be at least: the approximate size of the building or room in which the LAN is located the type of LAN cable, including the type of Terminator transponder, hub, Network Bridge, ...

Nxlog is a modular, multi-threaded, high-performance Log management system that supports multiple platforms. It works like Syslog-ng and Rsyslog, but not limited to the use of unix/syslog. It collects logs from files in a variety of formats and receives logs through all of the supported platform's UDP, TCP, or TLS remote networks. Nxlog 1.4.635 This version can generate GRAYLOG2 gelf output. This release provides support for JSON and XML. With two new ...

To complete this chapter, you can do the following: Understand the role of the local area network understanding the concepts and roles of the OSI model understand the meaning of host names, IP addresses, MAC addresses, ports, and sockets in the OSI model. Understand the format and function of MAC addresses. Understand the format and role of IP addresses understanding the format and role of host names understand the differences between UDP and TCP protocols. Understanding the role of ports and sockets understanding the search process of host names from IP addresses to MAC addresses. 1.1 What is a local area network (LAN)? Type of connection ...

Upstart is an event-based/sbin/init/daemon replacement for http://www.aliyun.com/zixun/aggregation/34332.html "> Processing system boot-time tasks and services. Stop during shutdown and monitor while the system is running. It was originally designed for Ubuntu distribution and was designed to be a system-v init alternative for all Linux distributions. U ...

By completing this chapter, you will be able to do the following: Understand the commonly used arpa-http://www.aliyun.com/zixun/aggregation/33795.html ">berkeley services." Understanding the Super Daemon: the inetd feature. Learn about the process of starting the Ftp/telnet service in inetd. Learn about inetd configuration files. Start or stop the Network service at the command line. To start or disable a ... by configuring the inetd.conf file.

This is the technology that protects data integrity. RAID means redundant low-cost http://www.aliyun.com/zixun/aggregation/20901.html "> Disk array. It is a rather new concept, presented by the University of California, Berkeley, in 1987. The basic idea behind raid is that by using multiple small disks (relatively few large disks) and possibly some checksum data, you should be able to rebuild the data in one of these disk failures instead of missing a few ...

BIRD is a dynamic IP routing daemon in a UNIX system. It supports all routing protocols, such as bgp,ospf,r561.html ">IP protocol, http://www.aliyun.com/zixun/aggregation/9485.html" >ipv6 variables. It has a very flexible configuration mechanism and a routing filtering language. BIRD 1.3.7 This version adds the route Originating Authorization Foundation, now RIPng again ...

In many network applications, FTP (http://www.aliyun.com/zixun/aggregation/19352.html ">file transmits Porotocol) has a very important position." A very important resource in the Internet is software resources. and a variety of software resources are mostly placed in the FTP server. It can be said that FTP and Web services account for almost 80% of the entire Internet application. ...

By completing this chapter, you will be able to do the following: Configure the host name (hosthttp://www.aliyun.com/zixun/aggregation/11696.html ">name") to configure the IP address configuration default route with a LAN connection Configure the host to use Ping and nslookup for DNS clients to test network connectivity setting IP address and subnet mask IP address? LAN every machine, whether it is a laser hit ...

Mundus is a neat tool for keeping filesystem and etc folders by looking for uninstalled software and legacy profiles. It can automatically or manually back up these files. Mundus 1.1.0 This version brings some changes to the engine. Using a parent-child hierarchy class to rewrite the module system, bringing a lot of stability, callback system implementation, so the child module is not limited to a directory, but a set of instructions or shell commands. New settings are implemented to provide users with broader application control. Software Information: http ...

File Transfer Protocol (FTP) is one of the most common network services in UNIX. Setting up an anonymous server is fairly straightforward. Setting up a virtual FTP host and a separate FTP account setting requires some skill. 1. Anonymous FTP This is the most common service: a machine is a separate FTP server. Most UNIX versions automatically complete this setting: the FTP root is usually/home/ftp if for some reason, the anonymous FTP service is not set on your machine, its setup works as follows: The ~FTP in the following narration is in/...

To complete this palm, you can do the following things: use cron to submit, list, and delete time schedule tasks. Schedule full and incremental backups to run automatically. Allow non-roothttp://www.aliyun.com/zixun/aggregation/6579.html > users to use the Cron 14.1 cron Daemon-cron daemon to execute commands at specified dates and times Automate Daily Task examples:-Trim system log files-hold ...

Event and http://www.aliyun.com/zixun/aggregation/17034.html ">task Manager is a events and Task manager. It provides a simple and intuitive way to store data using plain text files, to view the command-line interface for storing information in a variety of convenient ways, a cross-platform, based on the WX (Python) GUI to create and modify projects, and to view functionality. Items are displayed in the following ways: by date, context, keywords ...

The GNU Midnight Commander is a text-mode visual File Manager. It uses a double-sided interface and Subshell to execute commands, including a syntax-highlighting internal editor that supports internal viewing of binaries, including http://www.aliyun.com/zixun/aggregation/18564.html "> Virtual file System (VFS) that allows operations and archives on remote systems, such as FTP servers, and internal files. ...

Lixa (LIbre xa) is an open source XA transaction manager that performs the "XA specification" and "TX Specification" (transaction demarcation) of distributed transactions and follows the X/open CAE specification. Lixa 0.7.3 This version http://www.aliyun.com/zixun/aggregation/13387.html ">websphere MQ7.1 (CentOS 32-bit ...

The GNU Zile is a lightweight emacshttp://www.aliyun.com/zixun/aggregation/18444.html "> Text editor clone that can be easily used by each Emacs user Zile, Because it is written to resemble Emacs as much as possible. Zile full name is the Zile is Lossy Emacs, a small (about 130KB) footprint system, is a 17813.html "& ...