Shell

You must download the MySQL5.5 binary compression installation package before executing the script. I have downloaded it in advance. Execute the shell script below.#!/bin/bash#auth:taoyake/bin/mkdir -p /taokey/toolscd /taokey/tools/tar -zxf  mysql-5.

Http://www.runoob.com/linux/linux-shell.htmlShell Pass ParametersIn addition, there are several special characters for handling parameters: parameter Handling Description $# The number of arguments passed to

#!/bin/bash## Chkconfig:-95 15# description:tomcat Start/stop/status Script#Location of Java_home (bin files)Export java_home=/usr/local/jdk1.7.0_75#Add Java binary files to PATHExport path= $JAVA _home/bin: $PATH#CATALINA_HOME is the location of

Shell Introduction1.Shell was born in Unix,unix's first scripting language, which is a tool for interacting with unix/linux, it is meaningless to learn the shell alone, and the proficiency of the shell is a reflection of the user's proficiency in

Bash variable Category: Local variable: Also called local variable, valid only for the current shell process Environment variables: current shell and its child shell, child shell .... Special variables: $? The status of the last

Awk is a powerful text analysis tool, with the search for grep and the editing of SED, which is especially powerful when it comes to analyzing data and generating reports. To put it simply, awk reads the file line-by-row, using spaces as the default

There are 6 main types of conditional judgments:[Email protected] test]# Ls-ltotal 8drwxr-xr-x 2 root root 4096 Jan 19:28 shell-rw-r--r--1 root root 4 Jan 17 19 : Test.sh[[email protected] test]# [-D test.sh] && echo "Yes" | | echo "No" no[[email

First, shell variables1. Variables can be divided into two categories: environment variables (global variables) and local variables.Environment variables: All environment variables are system global variables that can be used in all child processes,

The function is actually to give a code a name, each time you use this code can directly use the function name to invoke it.First, create a functionThere are two kinds of formats for creating functions:Format 1:function function name {function

Java suspended animation, but the process is still in, you can determine whether the log file changes over time to determine whether Java suspended animationThe shell script is as follows:#!/bin/bash# #通过比较五分钟前后, log file MD5 value is the same, to

This article contains script service requests, string interception, file read and write content, print content wrapping. #!/bin/bashRetmsg= "";While Read lineDoecho "This is text: $LINE";Retmsg= '/usr/bin/curl-o test3.log-w%{http_code} ' \\n ' $LINE

/etc/hosts.deny: Commonly known as blacklist, control remote access settings.#!/bin/bash           //program starts #file: hosts_deny.sh# date: 2016-01-10grep  ' Failed password '  /var/log/secure | awk  ' {print $ One} '

1. Describe the results of the following commandsMore/etc/shellsDisplays all the contents of the shells text.Echo $SHELLView the shell program used by the current user.History-cClear historical and practical commands.Echo $HISTIZERecord the history

Case section:#!/bin/bash                                 //program starts #file:  case.shecho  "==========" echo  "welcome!" echo  "1 copy" echo  "2 delete" echo  "3 backup" echo  "4 Quit" echo  "= = = ======= "echo " Please input your select: "read 

Enterprise Real Shell interview questions, a challenge to put!Statement: If there is a similar, purely plagiarism1. Develop a daemon script that executes every 30 seconds to check MySQL master-slave synchronization[email protected] scripts]# cat

18-Channel Shell advanced Programming enterprise face testhttp://oldboy.blog.51cto.com/2561410/166516321 operation and maintenance personnel will have shell face questionshttp://oldboy.blog.51cto.com/2561410/1632876Enterprise Programming problems

Logical judgmentif. sh#!/bin/bash### #a=5if3 ]then "a>3" fiif. shA>3Vim if2.sh#!/bin/bash### #a=5if3 ]then "a>3"Fiif 4 ]then "a>4"fiif2. ShSH if2.sh>-ge greater than= =-eq equals! =-ne Not equal to>=-ge greater than or equal toVim

1. Arithmetic comparison Operator Describe -eq Equals -ne Not equal to -gt Greater than -lt Less than -ge Greater than or equal

1. awk command format: awk [Options] File name Options -F FS: Specify delimiter for split data -F File: Specifies the program's script file Example: awk-f: ' {print '} '/etc/passwd Awk–f script/etc/passwd Script: Represents

#!/bin/bash# automatic configuration Bond#by liuqmodprobe= "/sbin/modprobe" cd /etc/sysconfig/network-scripts if  [ -f ifcfg-eth0 ]thencp ifcfg-eth0 /tmp/ifcfg-eth0.bakcp ifcfg-eth1 /tmp/