Shell

The first scenario: do use multiple devices or simulatorsWorkaround: (Specify a device or emulator to connect to)1. Get the simulator/device list    adb devices 2. Specify device to execute ADB shell

Write a second shell script today and write the after-class questions in "private cuisine". The problem needs to write a check whether a name exists, does not exist to create a file, there is a need to determine whether the name of the file, the

Today, I learned a little bit about the shell programming under Linux and simply recorded the test cases.1. Edit the shell script file as follows:#!/bin/bashecho "Hello Bash Linux"echo "No. 0 parameter: $ A"echo "First parameter: $ $"echo "Current

Sshpass ToolsSshpass can install yum or download source package-P: Specify the password for SSH-O Stricthostkeychecking=no avoid a public key check for the first logon.#!/bin/bash/usr/bin/sshpass-p linux ssh-o stricthostkeychecking=no [email

Background:Work there are two of remote computer room need to transmit data, data full name is standard, in a directory named Unified prefix plus number. such as/path/from/file. {1..100}. While the special line of the machine room is limited to the

What is here DocumentHere Document is a special redirection method in the Linux Shell, and its basic form is as followsCMD Its role is to pass the contents of the two delimiter (hereDocument content section) to cmd as input parameters.For example,

shell scripting Introduction and common Tools Shell Script Shell script: is actually a batch script in Windows, multiple shell command collections that can be executed at once. Scripts on Linux can be implemented in a number of

Conditional Logic on Files# Determine if the file exists and the file type-Afileexists. #文件存在-BfileExists and is a block specialfile. #文件存在, and it's a block device.-Cfileexists and is a character specialfile. # #文件存在, and is a character

Get the date of the dayDate +%y-%m-%dOutput: 2011-07-28Assigns the current date to a date variabledate=$ (Date +%y%m%d)Sometimes we need to use dates before or after today, so we can use the-D parameter of dateGet Tomorrow's dateDate-d Next-day

Command: TRDescription: Replace characterFormat TR ' original character ' new character ' can be range character, specified characterCommand: SplitOption:-B 50m 1.txt According to the size of the split unit is b without units, units are trillion

The shell is a scripting language provided by Linux that can perform some programming operations. Essentially, the shell is just a command interpreter, and a shell script is a stack of commands and some simple logic to judge.So the most important

7-shell_ condition Operation Test and if statementThe first question to make a shell script "smart" is how to differentiate between different situations to determine what to do. For example, a warning is sent when the disk usage exceeds 95%, it can

Share a daily use of the monitoring network, disk usage, average load and ram used by shell scriptsThe script is in the attachment.Use the following:650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/73/59/wKiom1X6neKQsS7LAAQKmVx2JC8032.jpg "

Get today's Date:[Email protected] ~]# date-d "Now" +%y%m%d20150819[Email protected] ~]#Get Yesterday's date:[[email protected] ~]# date-d "1 day Ago" +%y%m%d20150818[Email protected] ~]# date-d "Yesterday" +%y%m%d20150818[Email protected] ~]#

This script is a Chatterserver service control script that can control Chatterserver start, stop, reboot, and Status View through service commands, as if MySQL had/etc/init.d/mysql or/etc/init.d/ Like Mysqld, just this Chatterserver service control

Test environment: ubuntu12.04 LTS VersionEcho >> file.txt,This method is the same as the bash and SH effects at the beginning of the script.and Echo-e >> file.txt This only fits with bashFor SH, the-E is entered into the file and then wrapped.and

failed to sync branch your might need to open a shell and debug the state of this repo.I made some changes to a file a month ago. I just realized today that they didn ' t go anywhere; The GitHub Web-site has a history of my changes.The client has a

the assignment and operation in the shell is the string processing by default, here are some special methods of mathematical operation in the shell, which can be seen later, hehe1. Examples of error methodsAVar=1+1Echo $varThe result of the output

This article describes the syntax of the shell, including variables in the shell, conditional judgments, control structures, and functions. In addition, all commands in this article are in variable condition control structure function. The next

try{String cmdstr= "C:\\ssh\\ssh2.exe [email protected]/home/azik/tmp/echo_date.sh";Process mypro=runtime.getruntime (). exec (CMDSTR);Mypro.waitfor ();Integer Errno=mypro.exitvalue ();Loginfo ("The ERRORLEVEL is:" +errno);Mypro.destroy ();if (errno!