Shell Programming Notes (four) __ programming

echo Color output position parameter variable a predefined variable read accept script arguments enter declare source command echo Color Output I just found out today . Echo can also output a string with a color : Echo-e "asdasd\e[1;32m ABCD \e[0m"

Shell ' + + ' operator error and Let:not found error resolution

Today, the script on the company server to get its own notebook on the run error, set-x tracking discovery is a variable in the self-increase operation error occurred, the error section of the script is probably like this: #! /bin/sh param=0

Linux shell Programming implementation of the ETL based on Hadoop (analysis) __HTML5

Gathen: 397706991, learning together Conf/hive.xml Specific shell code Download: http://download.csdn.net/detail/luo849278597/9490920 create table if not exists think_statistics (date_type_name string,date_name string,type int,type_ Name

Java Implementation sort (insert sort + bubble sort + Select Sort + Shell sort + quick Sort) __java

To sort an integer element in the ArrayList collection in ascending order: Package org.hyp.test; Import java.util.ArrayList; Import Java.util.Random; public class Mysort {private arraylist list, public arraylist getlist () {return list;} PU Blic

ADB shell view database in emulator (3.8.6 previous version does not support recursive queries)

I'm going to look at the database in Eclipse and operate it through CMD. Directory path is:/data/data/com.abc.oa It is more convenient to use the SqLite3 command directly in the ADB shell. 1. Open cmd 2. Direct input to adb shell 3. Enter

Background operation under Linux Shell and its foreground conversion __linux

http://kingphp.blog.163.com/blog/static/200423244201361632639594/ When you start a program with bash, you can use it after the program, and the implementation program runs in the background; For example: Emacs & But if you forget to enter &; but

Multiple shell commands are executed in Java, except for the first one that has not been executed __java

The most recent project needs to execute shell commands in Java, in the most common way, with the following code: public class Shellutil {public static string Runshell (String shstr) throws Exception { process process; Process =

Use Shell in Linux for various operations of the database __ large data

Attached below by ShellThe way the command line does not interactively manipulate the database: mysql-hhostname-pport-uusername-ppassword-eMySQL-related SQL statements, do not run MySQL in the MySQL prompt, that is, you can operate MySQL in

Shell programming: Getting directory (including subdirectories) of all file names, paths and file sizes __ Programming

To get all file names in the directory (including subdirectories), the path and file size should be the easiest to use with the shellShell script: lsdir.sh #!/bin/bash function ergodic () {for file in ' ls ' do if [-D $ '/' $file] then

Classpath of the Linux shell Java jar when using a dependency package __shell

When executing a jar package from a command line or shell script under Linux, if the jar package does not refer to an external jar package, it is very easy to do so simply by using the following command: Java-jar Test.jar #注意, if you do not

Run the shell script prompt to find the file error, workaround

Sometimes run a shell script error, generally can not find the shell file, mostly because the script is generated under Windows and then copy to Linux, with the following command check: $ head-1 Yourscript | Od-c And the IT ends:this is wrong 000000

Jenkins execute the shell command for the remote Linux system __linux

ssh

First need to go to the System Management-> Management plug-in, select the Optional Plug-in tab, search and find SSH slaves plugin plugin, click Download installation You may need to reboot the Jenkins after the installation is complete You can

How to implement Shell concurrency

Reprint: http://blog.chinaunix.net/uid-27571599-id-3473078.html Many people have asked me how to write shell script, how to achieve the same time to upload files to three FTP servers, how to detect the three servers are alive and so on, in fact,

Shell programming space Considerations __ Programming

1. When defining a variable, no spaces can be left on either side of the = number.egGender=femal ———— RightGender =femal ——— –wronggender= femal ——— –wrong2. Conditional test statement [Both sides of the symbol must be left blank.egif [$gender =

Shell script implementation with color progress bar

Recently just learned the shell script programming method, uses the shell script to implement a colored progress bar, below will show the result to everybody.Program ResultsThis is really very simple to achieve, only need to understand some basic

Shell Scripting Learning Notes-variable usage and input and output

1. Definition of variables 1.1 Variable names can consist of letters, numbers, underscores, but numbers cannot be the first character of a variable name. 1.2 Define the value of the variable by assigning the symbol "=", e.g: Myname= ' Test ', String

Custom logging to a file in a shell script

Custom log functions and pre-variables# Adirname-return Absolute dirname of given fileadirname () {odir= ' pwd '; CD ' dirname $ '; pwd; CD "${odir}";} Mynam= ' basename ' $ "' mydir= ' Adirname" $ "' myhome= '/home/shell/script" mylog_path=

Shell Script Programming Basics

One: Program concept? Program: Algorithm + data structure? data: Is the core of the programData structure: The type and organization of the information in the computer? algorithm: How data is processedProgram Programming Style:Program:

Shell Script Programming Basics

1, write script/root/bin/systeminfo.sh, display the current host system information, including hostname, IPV4 address, operating system version, kernel version, CPU model, memory size, hard disk size2, scripting/root/bin/backup.sh, can be

Test operation symbols in shell scripts and && | |

测试操作符 Common Test Operators English name Description -F file file files exist and are normal files True, that is, test expressions are set -d file Direct Ory

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