unix egrep

1. Configuration Apue. H is a file written by the author. It contains common header files and is not provided by the system. This includes common header files and definitions of error handling functions. It is really convenient to use. To use it, perform the following operations to complete the configuration. Download the compressed src.tar.gzsource code package at http://www.apuebook.com. 1. decompress the package to the/home/user/directory. 2. Modify wkdir =/home/XXX/apue.2e in make. Define

In Linux or Unix-like systems, each user and process is running in a specific environment. This environment contains variables, settings, aliases, functions, and more. Here is a brief introduction to some of the common commands in the shell environment, including examples of how each command is used, and setting your own environment at the command line to improve efficiency. Find your current shell. Enter any of the following commands in the termi

contain a match. The output content only contains rows that do not contain the given word. For example, output all rows that do not contain the bar word: $ grep -v bar /path/to/file UNIX/Linux pipelines and grep commands Grep is often used with pipelines. In this example, the name of the hard disk device is displayed: # dmesg | egrep '(s|h)d[a-z]' Display CPU model: # cat /proc/cpuinfo | grep -i 'Model' Ho

. $ Awk script text name: file to be processed Awk Syntax: Like other UNIX commands, awk has its own Syntax: Awk [-f re] [parameter...] ['prog'] [-F progfile] [in_file...] Parameter description: -F re: Allows awk to change its field separator. Parameter: this parameter helps assign values to different variables. 'Prog': Specifies the Program Statement segment of the awk. The statement segment must be enclosed by the single extension number 'and' to pr

replace or the method of building engineering can be converted in batch, please refer to http://tech.ddvip.com/2007-10/119380983936863.html. There are a lot of related gadgets under the Windows platform, such as multiu2d, Google. In the Unix/linux platform we need to use script files or channels, in essence, the above methods of automation.Here are a few simple examples, sourced from http://bbs.chinaunix.net/viewthread.PHP?tid=412957extra=page=1:Scri

English title: Useful one-line SCRIPTS for SED (Unix stream editor)Original title: HANDY one-liners for SED (Unix stream editor) Finishing: Eric pement-e-mail: pemente[at]northpark[dot]edu version 5.5Translator: Joe-e-mail: hq00e[at]126[dot]com The latest (English) version of this document can be found at the following address:Http://sed.sourceforge.net/sed1line.txtHttp://www.pement.org/sed/sed1line.txt Oth

. Compare the command with the comm and uniq commands. Dir Purpose: Dir is used to list the contents of directories on some platforms. For example, Dir (DIR has the same functions as LS, but it has fewer options. DIR is not suitable for all UNIX systems ). Du Purpose: Report disk usage by Du. Example: Du. The following is the list output after the du command is executed. Echo Purpose: ECHO is used to display the specified text content. For example, Ec

script text name to process file 4. awk Syntax: Like other Unix commands, awk has its own syntax: awk [-F re] [parameter ...] [' Prog '] [F Progfile] [In_file ...] Parameter description: -F Re: Allows awk to change its field separator. Parameter: This parameter helps to assign a value to a different variable. ' Prog ': The program statement segment of AWK. This statement must be enclosed by the Tanko number: ' and ', in case the shell interpre

Linux/Unix shell scripts Execute SQL statements across servers and instances during database O M, it is inevitable that you need to query databases across multiple servers and multiple Oracle instances. For example, you need to check the value of the open_cursor parameter in all current production environment databases to determine whether to increase the value. The database server to be viewed has multiple instances and multiple database servers. In

Article Title: SED single-line script Quick Reference (Unix stream editor ). 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. Text interval:--------# Add an empty row after each rowSed G# Delete all original empty rows and add an empty row after each row.# In this way, each row in the output text is followed by an e

Label:Using shell scripts to monitor and manage Oracle databases will greatly simplify the workload of DBAs, such as common monitoring of instances, monitoring of monitors, monitoring of alarm logs, backup of databases, automatic mailing of AWR report, etc. This article gives an example of using shell scripts to monitor Oracle instances under Linux. Reference for Linux Shell:Linux/unix calling Sql,rman script in shell scriptLinux/

ArticleDirectory UNIX Origin UNIX splitting UNIX legal disputes UNIX open-source organization Linux was born Linux leader today For more information, see http://coolshell.cn/articles/2322.html. In conclusion, we will know how to plan and how to proceed tomorrow. In the scroll wheel of time,

The conversion character of the shell command line is \ www.2cto. comecho $ PATH // get the current value of the system environment variable include a file (class) to: 1.4. # ifndef_ALARM _ # define_ALARM _ # endif extract and copy method: (c... for the unix command line, the conversion character of shell command line is \ www.2cto.com echo $ PATH // get the current value of the system environment variable include a file (class) to: 1.4. # ifndef _ AL

UNIX legends (Part 1) Chen HaoOnly by understanding the past can we know and understand it. In conclusion, we will know how to plan and how to proceed tomorrow. In the scroll wheel of time, many things are just like a meteor, and some things are able to withstand the test of time, which is a constant charm and relishing, so far. You need to know how to choose tomorrow and how to do it. Instead of blindly following all kinds of cutting-edge technologie

Classified communication of some LinuxUnix commands: ftp file transfer protocol login logs on to Unixmailx to read or send emails to rlogi Summarizes the usage of some Linux/Unix commands. Communication: Ftp file transfer protocol Login logs on to Unix Mailx reads or sends emails Rlogin logs on to remote Unix Write talk to other terminals Telnet to another system

Using shell scripts to monitor and manage Oracle databases will greatly simplify DBA workload, such as common instance monitoring, monitoring, and daily alert monitoring, and database backup, AWR report automatic mail, etc. This section describes how to use shell scripts to monitor Oracle instances in Linux. Linux Shell: Linux/Unix shell scripts call SQL and RMAN scripts Passing variables between Linux/Unix

The Unix tradition tends to delegate a task to a process, but within a task is not just a thread, like all members of a company, everyone is doing the same thing, everyone is only part of it, and when the grain size is reduced, everything can be done at the same time, anyway, Everyone also shares all the resources. So there is a thread. Threads are a different thread of shared resources. The semantics of threading are different from plain

Tags: construction development Source code large protection enthusiasts software direct no problemcollation from the network: http://blog.csdn.net/xiaojianpitt/article/details/6377419There are a lot of beginner Linux people who are concerned about the difference between Linux and Windows, and here is the difference between Linux Unix, it is clear that some differences can help us understand the operating system. Here's a description of the differences

This is a shell script I wrote earlier, used to Linux/unix automatic file backups between systems.The main features of the script are: Synchronization or copying of files for the day between different servers; requires expect command support, Rhel and AIX testing is normal and requires expect command Support (Unix systems need to modify the first line of the script to #!/bin/bash the system shell);

Find a very detailed Linux shell script tutorial, in fact, not only the shell script programming, but also introduced the system of various commandsHttp://vdisk.weibo.com/s/yVBlEojGMQMpvThis book is divided into five parts, in detail the shell programming skills, a variety of UNIX commands and syntax, but also related to UNIX under the word processing and a small number of system management problems. The bo