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

There are 2 scripts that run daily on the mission planDTS_RSYNC.SH is responsible for downloading the SQL files that are backed up onlineDTS_INPUT.SH is responsible for importing the downloaded backup files to the local MySQLNow, the problem is that

Once the trap captures the signal, there are three ways to react:(1) Execute a procedure to process this signal(2) The default action to accept the signal(3) Ignoring this signalTwo. The trap provides three basic forms for the above three ways:The

Transfer from http://www.cnblogs.com/peida/archive/2013/03/18/2965369.htmlThe wget in a Linux system is a tool for downloading files, which is used at the command line. For Linux users is an essential tool, we often have to download some software or

01. Learn the knowledge storage required for Shell programming1.VI, VIM editor commands, VIMRC settings2. Command base, more than 100 commands3. Basic, high-end network services, Nfs,rsync,inotify,lanmp,sersync,sshkey batch distribution management02.

printf "The complete list is%s\n" "$$" 24520 the shell itself PIDprintf "The complete list is%s\n" "$!" PID of the last running background process of the empty shellprintf "The complete list is%s\n" "$?" 0 end code of the last Run command (return

Shell string manipulationThe bash shell provides several commands for string processing: awk command Expr command String length ${#..} Length of expr Length of awk (s)Instance:string= "Hello World"$ {#string}Expr

The way to compare two strings for equality is:If ["$test" x = "Test" x]; ThenHere are a few key points:1 using a single equals sign2 Note that there is a space on each side of the equal sign: This is the UNIX shell requirement3 Notice the last X of

Create script: Vim test.shScript content: #! /bin/bash # "#!" is a contract tag that tells the system which shell to use to executeecho "Hello world!"Make script Execute permission: chmod +x./test.shExecute script:./test.sh #注意, be sure to

As a result of the work, several bash scripts were written in the previous months, primarily for automated testing, packaging, installation packages, and so on. Although compared to C + + programming, to be simple, stupid, but it in the Unix-like

Wrote a script to view the APK signature with the shell. The code is very small and simple.Supports recursive directory queries#!/bin/bash# how to use the./getcertificate.sh xx.apkget_signature () {path= ' jar tf ' $ ' | grep RSA ' #查找apk中RSA文件 jar

${} for reading, extracting and replacing strings, you can use ${} to extract the string 1, extract the file name [[email protected] log]# Var=/dir1/dir2/file.txt[[email protected] log]# Echo ${VAR##*/}FILE.TXT2, extract suffix [[email protected]

Reprinted from: Coolshell ChenhaoThe shell is also called the command line interface, which is the interface between the user and the computer under the *nix operating system. The word shell refers to the program in the operating system that

script content #!/bin/bashfor I in "1" "2" "3" "4" "5" "6" "7" "8" "9" do    ;     for J in "1" "2" "3" "4" "5" "6" "7" "8" "9"                 do                        IF [${j}-lt  ${i}]    &nbs P                   then                       

1. Fake Cookie Login system (in fact, this step is redundant, most users do not change the password, are the default 123456)Login successfully set 4 cookies, see CodefunctionLogin$lusername,$lpassword,$key,$lifetime=0) {Global $set _username,$set

We know that the hardware resources of the computer, such as disk, IO, memory are unified management by software, this kind of special software is often said operating system, windows in the underlying resource control based on the building of its

Recently scripting, I often see conditional statements with the IF [-X $variable] class, not knowing what the meaning of the corresponding parameter is,The excerpt is as follows: from http://blog.csdn.net/aaaaatiger/article/details/1713611thanks!1[ -

Common commands and statements for Shell programming (SCRIPT) and Common commands for shellSome common Shell programming (SCRIPT) commands and statements can meet general requirements.Command Parameters received: Number of parameters: $ #

Here documentation in Shell We know that operations on linux Command lines can be put in files. After the executable permission is granted, the file can be converted into a shell script. But if we talk to some programsInteractionBut shell scripts

The shell program mounts the iso image file and configures the local yum source, write a script, mainly do 1. Mount the local iso image file 2. boot the local iso image and mount it automatically 3. Use the iso image to configure the local yum