Shell

Rzrk:~/luzhi # ldconfigldconfig: /usr/local/lib/libsvn_fs_base-1.so.0 is not a  symbolic linkldconfig: /usr/local/lib/libcharset.so.1 is not a symbolic  linkldconfig: /usr/local/lib/libpcrecpp.so.0 is not a symbolic 

The Linux shell has its own process Control statement, which includes a conditional statement (if), a looping statement (For,while), and a SELECT statement (case). I'll use the example below to illustrate how each statement is used.One, Shell

Application Scenario: A directory contains many software source Tarball, after the deployment of these software, will certainly generate a lot of useless temporary directory, you can script the way to delete all directories in the directory. When

6.shell function6.1. Defining functionsBrief introduction:The shell allows a set of command sets or statements to form an available block that becomes a shell functionDefining the format of a functionMethod OneFunction name (){Command 1......}Method

What I want to say here is a few shell parentheses, braces and parentheses, the use of commands, as follows:1.${var}2.$ (CMD)3. () and {}4.${var:-string},${var:+string},${var:=string},${var:?string}5.$ ((exp))6.$ (Var%pattern), $ (Var%%pattern), $

Write a script with the shell at the same time monitoring multiple hosts (monitoring host whether online, CPU, memory, hard disk, IO use status, and have the mail notification function), the big God after looking at the wrong place or have a better

Transferred from: http://cqfish.blog.51cto.com/622299/187188Article Source: http://hi.baidu.com/haigang/blog/item/e5f582262d639c118b82a167.html#!/bin/shMypath= "/var/log/httpd/"Myfile= "/var/log/httpd/access.log"#这里的-x parameter determines whether

1. Gets the return value of the Shell function call:#!/bin/sh info () { cat jlb.sh} res= ' info ' echo ' state: ' $?echo ' res: ' ${res}description : res='info' This behavior calls function info, which conforms to ' not single quotes, but the

While Condition;doStatmentDoneUntil Condition;doStatmentDonePractice:Write a script: every five seconds to see if JT has landed, did not login to continue to execute, landed the Stop command650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/4

The operating environment of the Bash Shell:Configuration values are divided into the overall system configuration values and preferences of each person, only some files placed in different places! Path and command search orderWhen a command (

The shell itself is a program written in C, which is a bridge for users to use Unix/linux, and most of their work is done through the shell. The shell is both a command language and a programming language. As a command language, it interprets and

The shell is much more programmatic in terms of programming than Windows batch processing, both in loops and operations.Bash supports one-dimensional arrays (which do not support multidimensional arrays) and does not limit the size of arrays.

[Copyright statement: reprinted. Please retain the Source: blog.csdn.net/gentleliu. Mail: shallnew at 163 dot com] Awk has many built-in variables used to set environment information. These variables can be changed. The following are the built-in

Open the text editor and create a new file with the extension SH (SH stands for shell). The extension does not affect script execution. If you use PHP to write shell scripts, PHP is enough for the extension.Enter some code: 1 #!/bin/bash2 echo

1. Linux script compiling Basics 1.1 Basic syntax Introduction Start with 1.1.1 The program must start with the following line (must begin with the first line of the file ): #! /Bin/sh Symbol #! The parameter used to tell the system that the program

CEN decompress the. ZIP file and search a lot of methods on the Internet, using System. IO. compression. GZipStream uses the J # library function and the Java-based library function. However, many of them are not very good. In the end, it is still

Standard Input/Output and redirection: The Fedora Core Linux is released in Linux, and the development team of Red Hat Linux will continue to participate in the development of this release. Standard Input and Output We know that when executing a

Getting started with Shell programming (version 2) (I) and getting started with shell programmingSimple example Shell program Example 1. #!/bin/bash#This is to show what a shell script looks likeecho "Our first example"echo # This inserts an empty

Shell script execution error & #39; \ 357 \ 273 \ 277 & #39;: commandnotfound Solution 1. Delete the BOM and execute the following command under vi. : Set nobomb 2. cause: The so-called BOM is the Byte Order Mark, which is a Unicode character

By: dahubaobaoI. PrefaceWith the development of the Internet, more and more Unix/Linux systems are used, and it is no longer difficult to intrude into a Unix/Linux system. Usually, after the intrusion is successful, one or several backdoors will be