Shell

Tomcat random boot via shell under CENTOS7What we are introducing today is the introduction of the configuration of Tomcat random boot through the shell under Centos7, and the replacement of the service from the systemd from the CENTOS7, so it is a

#!/usr/bin/bashdir_old=$ (PWD)absolute_script_path=$ (CD $ (dirname $) && pwd)relative_script_path=$ (dirname)Wrong_absolute_script_path= $dir _old/$relative _script_pathecho "Current PATH: $dir _old"echo "Absolute_script_path is: $absolute

Grammar:Case "Variable" in"Variable 1")...;; #输出两个分号"Variable 2")...;; #输出两个分号"Variable 3")...;; #输出两个分号*)...;; #输出两个分号Esac 123456789101112131415161718192021222324252627 #!/bin/bash# Author:James 2016-10-15echo "want to output

What's the shell? What's the use? I believe this is a question most people have had with the shell. Below is a small series for everyone to explain their own explanations, I hope to be helpful to everyone.What is a shell?The shell is a shell of the

Diffdiff file File1 to compare two different files-C display rows around the top and bottom-U uniformly output patches in a certain format-R comparison of files in two directoriesPatch File File.path Patching-B Plus-B backup source filesgrepgrep Key

1. Print Network interface list[touch_more]# ifconfig | cut-c-10 | Tr-d ' | Tr-s ' \ n 'Eth0Lowww.qixoo.qixoo.com//cut-c-10; The first 10 characters of the output;Tr-d "; Delete all spaces;Tr-s ' \ n '; Compress repeated line breaks2. View Name

Tag: The shell operator represents the deletion of the first character net article BSP comSuppose there is a variable var=http://www.aaa.com/123.htm.1. # Intercept, delete the left character, leave the right character.Echo ${var#*//}where Var is the

###### #shell脚本命令 ############# #1. grep command #######grep keyword File | directory # #在文件或目录中查找含有关键字的行Grep-i # #忽略大小写-N # #显示关键字所在的行-C # #显示过滤结果的个数-V # #反向过滤-e "keyword 1| keyword 2" # #过滤多个关键字-R Directory # #在目录中查找含有关键字的文件Note: ^ keyword #

Common shell scripting use cases, from the online reference and after the modification of the work, in addition to the wiki in the company to write records, it is necessary for a blog to record a drop.Combat Problem 1:Use the For loop to create a

Function Description: Tell the shell to remove the eval parameters and re-calculate the contents of the parameters.Syntax: eval [parameter]Supplementary Note: Eval can read a series of parameters and then execute according to the characteristics of

######################## # # #6. Shell script Command # # ######################### # # #1. diff####diff file File1 # # compare two different files 650) this.width=650; "Src="

echo-n non-newline output$echo-N "123" $echo "456" final output 123456 instead of 123456 echo-e handling special characters if the following character appears in the string, it is handled in particular, not as a general text output: \a a warning; \b

Original, reproduced please specify. Thank youShell launches Hadoop cluster1: Clear Boot order1) Start zookeeper cluster (in CentOS 4-02,centos6-02,centos7-02 respectively)app/zookeeper-3.4.5/bin/zkserver.sh Start//startup processapp/zookeeper-3.4.5/

grep commandgrep Example:[OPTIONS] PATTERN [FILE ...][Email protected]:~# grep ' root '/etc/passwd root:x:0:0:root:/root:/bin/bash [email protected]:~# grep "$USER"/ ETC/PASSWD Root:x:0:0:root:/root:/bin/bash [email protected]:~# grep ' whoami '/etc/

#!/bin/bash#return error code#0: Success#1: Parameter Error#6: Custom.log file is empty#7: Cut File Error#8: Up log file successTar_dir_file_max=30main_log_file_max=1024Main_log_name= ' Custom.log 'Cut_main_log_file= "custom_$ (date +"%y%m%d%h%m ").

This article will aim to implement regular automatic backups of the MySQL database, and introduce the perfect collaborative process between shell scripts and scheduled tasks. Where the shell script is responsible for the specific backup operation,

Input and output in the shellStandard input: KeyboardStandard output: Terminal displayThe >> append is a newline appendEcho- n do not trailing line breaks-e enable escape function to interpret backslashes-e disables the escape function that

1. Set the environment variable histsize so that it can save 10,000 command history.   vim/etc/profile   change histsize=1000 to histsize=10000 2. Why do I set PS1 (ps1= "[\[email protected]\h \w]\$")    display the results to be different from

Requirements: The company has two backup servers, one from the beginning, every night from the server began to synchronize some data on the main service, but rsync always disconnected, tried a lot of methods are useless, wrote a script to solve this

/*** Setup window is located in the middle of screen* @param the Shell to adjust the position of the Window object*/public static void Center (shell shell){Get screen height and widthint screenh = Toolkit.getdefaulttoolkit (). Getscreensize ().