Shell

Today, the Error:insufficient permissions for device is connected to the tablet USB under Linux and the ADB shell is tried.And we enter the ADB devices display:[Email protected]:~$ adb devicesList of devices attached???????????? DeviceSo how do we

Dbcn= "mysql-h172.16.1.194-uroot-p123456";d b=dsp_ad_center;ii=0;ct= ' $DBCN-n-E "select COUNT (1) from Information_sch Ema. TABLES as t WHERE t.table_schema = ' $db ' and t.table_type = ' BASE TABLE '; "'; mkdir-p/chenenhui/$dbwhile true;doif

Read the CU forum Shell 13 After a few small experiments, prepare to forget!Shell 13 Q Address: http://bbs.chinaunix.net/thread-218853-1-1.html#!/bin/bashfunction func_com () {Local a=1 local b= "2c3" Echo ${a}b echo $ab}function Func_arra Y ()

Tag: The grep command of the Shell scripting toolgrep (abbreviated from globally search a Regular expression and Print) is a powerful text-search tool for Linux systems that can search for text using regular expressions , and print out the matching

Debug Script Test Script syntax: bash-n file.sh View script every step of execution: bash-x file.sh position variable: $1,$2,... Special variables:%?: Execution status of the last command $#: number of parametersHow to perform arithmetic operations

$ -----The name of the current program is actually an internal parameter, unlike $1,$2 .... because it must have! $#----The total number of arguments passed to the program, that is, the legend of the array size$?----the previous code or shell

A. Common Hadoop commands1. The FS command for Hadoop#查看hadoop所有的fs命令Hadoop FS#上传文件 (both put and copyfromlocal are upload commands)Hadoop fs-put jdk-7u55-linux-i586.tar.gz hdfs://hucc01:9000/jdkhadoop fs-copyfromlocal jdk-7u55-linux-i586.tar.gz

One, Shell interpreterShell interpreter, the bridge between the user and the operating system kernelThe shell is between the operating system kernel and the user, is responsible for receiving the user input operation instruction (command), and runs

2.shell Tools2.1. log filesBrief introductionIt is important to create a log file, which records important information. In the event of an error, this information is very useful for our troubleshooting, and the monitoring information can be logged

7. Passing of script parameters7.1.shift commandBrief introduction:Shift n Shifts the parameter position to the left n bits at a timeExample#!/bin/bashusage () { echo "usage: ' basename ' filenames"}totalline=0# The following statement $# the

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

today when writing a shell script to find that you need to set the user's password, and set the password is interactive, so in the script is obviously not very good, so the Internet to find information, found the following two common non-interactive

One way is to useCatand anti-quotePS: Anti-quotes play the role of command substitution in Linux. Command substitution refers to the ability of the shell to interpolate the standard output of a command anywhere on a command line.The input format is

First, the Linux Shell BASIC programmingVideo 1　1.1. View your system shell information$ Cat/etc/shell command to get how many shell programs are in the Linux system$ echo $SHELL command to see which of the shells you are currently using1.2. View

Rhel automatic installation of zookeeper shell scriptsA: This script runs the machine, Linux RHEL6B,c,d,... : Machine to be installed zookeeper cluster, Linux RHEL6First, on machine A that the script runs, determine that you can log on to the

A Linux basic commands1.1. CP commandThe function of this command is to copy the given file or directory to another file or directory, which is very powerful.Syntax: CP [option] source file or directory destination file or directory1.2. MV

Hadoop reading Notes (i) Introduction to Hadoop: http://blog.csdn.net/caicongyang/article/details/398986291.shell operation1.1 All HDFs shell operation naming can be obtained through Hadoop FS:[[email protected] ~]# Hadoop FSUsage:java Fsshell[-ls ][

Shell script: Print 99 multiplication tableToday in three different ways to achieve the shell script Print 99 multiplication table, the code is as followsMethod 1: Use a For loop (a.sh)#!/bin/shfor i in {1,2,3,4,5,6,7,8,9}do to J in {1,2,3,4,5,6,7,8

/** * Run shell script * @param shell script required to run */public static void Execshell (String shell) {try {runtime RT = Runtime.getrunt IME (); rt.exec (shell);} catch (Exception e) {e.printstacktrace ();}} /** * Run Shell * * @param shstr *

Shell Programming Application: Automated website backup and shell AutomationRsync is a data image backup tool in unix-like systems-remote sync. A Fast Incremental Backup Tool, Remote Sync, supports local replication or synchronization with other SSH