Shell

#!/bin/shpath=/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin:/usr/local/sbinlang=zh_cn. gb18030export path langanalyzer_home=$ (cd  "$ (dirname ") ";  pwd) cd  $ANALYZER _ Homedeclare -a filearrecho $1 ", " $2function listdirfile ()  {   #fileArr = ()

The configuration file is as follows ######### #BACKUP MYSQL config####### #database namedb_name=testdb_user=rootdb_pass=123456#### #backup Day Configbegin # # # # #day_backupdir =/home/backup/db/dayday_backup_fix=dayday_interval=1#### #backup Day

This article references: Shell Scripting Learning GuideThis article reads as follows: Know the shell directive, but do not know how to complete an automated shell script.Because when editing this article, the author is also a novice. So, in some

Processing of seq in a shellBackground: Using the shell to extract the contents of the file, the filename is generated with the serial number as follows, the file nearly more than 400 W is as follows:Www.ahlinux.comOriginal script#! /bin/sh#str1 = ""

Environment variablesSome commandsVarious environment variables often appear in shell scripts, so to write a script, you must first understand the environment variables. Common commands for handling environment variables are listed below

Like other languages, the Shell can also contain external scripts that merge the contents of the external script into the current script.The Shell contains scripts that can be used: . FileName Or SOURCE filename The

Linux Shell Script Raiders notesChapter III: File Operations1, the production of any size file [[email protected] dd_test]#[[email protected] dd_test]# dd If=/dev/zero of=junk.data bs=1k count=1010+0 Records in10+0 Records out10240 bytes (Ten kB)

1. Open the terminal and enter the help command to see a list of the built-in shell commands for the system's default shell (usually bash):[[Email protected] ~]$ help GNU bash, version4.1.2(1)-release (x86_64-redhat-linux-GNU) These shell commands

The following are personal understandings and are for informational purposes only.First, IntroductionHBase is a column-oriented distributed database developed on HDFS that is suitable for random read/write ultra-large data sets (often difficult to

Wildcard characters:The so-called wildcard, refers to the time a file name style, can be used to compare the file name to find the matching files.*: Represents an arbitrary string, which can be an empty string？ : Represents a character, but cannot

Bored to see a face test, requires the shell script to create 100 users, named: student001...student100:#!/bin/bashfor num in ' seq-w ' Do/usr/sbin/useradd student$num echo ' Password ' |passwd--stdin student$nu MdoneAlso, ask for an account

Good newsGood newsGood newsGood newsGood newsGood news, this series of scripts has been opened on GitHub, I named "Easy Shell " (Click this entry).Now that you have included the scripts in the previous installments, there will be many other scripts

Recently in the study shell, eldest brother let write a read system configuration information script as practice and work acceptance, I wrote such a script, read the operating system, kernel, network card, CPU, memory, disk and other information,

Mkdir/server/scriptCd/server/scriptVI mysql_backup_db.sh#!/bin/shmysql_backup_dir=/data/mysql_backup/$ (Date +%f)[!-D ${mysql_backup_dir}] && mkdir-p ${mysql_backup_dir}User_pass= '-u root-pyeqing 'mysql_login= ' MySQL ${user_pass}-e "show Databases"

Resources: Linux shell script Raiders author Sarath Lakshman People's post and telecommunications pressShell: Reads the contents of each line of the file and outputs the notation 1Purpose: Read the passwd file, get the user name and its default

$CatOpenstack_install.SH #!/usr/bin/EnvBashfunctionUsage {Echo "usage:$0 [optaion] ..." Echo "Master Install OpenStack Master in the This system." Echo "COMPUTE install OpenStack compute in the This system."Exit}functionprocess_option { Case " $"

The shell executes the jar program and manually configures the JDK environment that executes the jar, executing the script as:#!/bin/shexport java_home=/home/hadoop/szw/jdk1.8.0_25 Export path= $JAVA _home/bin: $JAVA _home/jre/bin: $PATHecho ' Date '

Shell ProgrammingA. for Loop Build List {start number: End number} Command generation list ' seq [number of start] [step length] End number ' For L in {1..5};d oFor L in ' seq 5 ';d o1 to 100 of the cumulative sum and1

14/12/17 19:18:53ERROR shell:failed to locate the winutils binary in the Hadoop binary pathjava.io.IOException:Could not locate exec UtableNULL\bin\winutils.exe in the Hadoop binaries. At Org.apache.hadoop.util.Shell.getQualifiedBinPath (Shell.java:3

650) this.width=650; "class=" Size-full wp-image-4807 aligncenter "alt=" Picture 1 "src=" http://www.kjxfx.com/wp-content/ Uploads/2015/01/%e5%9b%be%e7%89%8712.jpg "width=" "height=" 337 "style=" height:auto;vertical-align:middle; border:0px;margin:0