Shell

The startup process of the MAC system can see: Http://hi.baidu.com/%CB%E6%B7%E7%B6%F8%D0%D01999/blog/item/271d20a694d7d49dd0435842.html 1 Mac boot up script or application (run shell script at system startup) 1 if you want to start a Mac

Content Introduction: Two kinds of shell script detailed Operational actions to verify the validity of Rman backup sets Rman Backup Recovery experiment Operation Warfare Technique Often listen to some master said, to do a regular Oracle Database

http://blog.51cto.com/zt/267 Original works, allow reprint, please be sure to use hyperlinks in the form of the original source of the article, author information and this statement. Otherwise, the legal liability will be investigated.

The habits to be cultivated are as follows:Code has comments #!/bin/bash# written by steven# Name: mysqldump.sh# Version: v1.0# Parameters: No # Function: Mysqldump backup mysql# Create Date: 2016-08-27 Indentation There are rules

Shell Script IntroductionShell is a scripting language blog.lishiming.net (Amin blog, you can go inside to find the shell problem)You can use logical judgments, loops, and other syntaxFunctions can be customized to reduce duplication of codeThe

From the programmer's point of view, the shell itself is a program written in C language, from the user's point of view, the shell is the user and the Linux operating system communication Bridge. The user can either enter command execution or use

Problem one: This is the case that the hard disk is broken, do not have to try to repair, and directly replace the new one can beThe cause of this problem is: voltage instability, often caused by power outagesProblem two: This situation can be

What is the exact difference between a ' terminal ', a ' shell ', a ' tty ' and a ' console '?A terminal is at the end of A electric wireA shell is the home of a turtleThe TTY is a strange abbreviationA console is a kind of cabinet.Well,

Linux shell String Operations (length, find, replace) detailedThe following two string operations are described in this blog post,1 ${string:p osition} #在 $string, extract substring 2 ${string starting from position $position : Position:length}

Questions: Redhat 6.3 Virtual Machine performs an IBM Installition manager installation with a direct return, prompting for a new message that does not support virtual machine hardwareSolution: IBM installition Manager relies on incomplete packages

Multi-Instruction execution Symbol Format Role ; Comd1;comd2 Execute sequentially && COMD1 && COMD2 COMD1 properly executed, COMMD2 executed,Comm1 execution fails, COMMD2

There are several ways to do this in Bash's arithmetic operations:Example of name syntaxArithmetic extension $ ((arithmetic)) r=$ ((1+2*3))Use external program expr expr arithmetic r= ' expr 1+2*3 'Use $[] $[arithmetic] r=$[1+2]Using built-in

The Until loop executes a series of commands until the condition is true. The Until loop and the while loop are just the opposite of the processing mode. The general while loop is better than the until loop, but at some point it is only rare that

Open After ESXi ssh , the host summary will be prompted with a warning message ;650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/54/41/wKioL1R9Zj_iQDD2AACxLMlbQlw314.jpg "/>The solution is as follows : VSphere Client Log in to

　　　　　　　　　　 1. ls: similar to the Dir command in DOS The most common parameters of LS include-a-l-f. Ls- Linux Files. files starting with LS are regarded as hidden files and cannot be seen only by using ls commands. In addition to displaying common

Please contact me for a better answer. All of the following answers have been tested: # Practice:   1: print all lines containing the string San.2: print all lines where the person's first name starts with J.3: print all lines ending in 700.4: print

Document directory From Ubuntu Chinese RedHat gnome terminal shortcut Http://huangchao200701.javaeye.com/blog/263002     CommonWin + n switch Background Color StyleAlt + TAB = needless to say.Win + TAB switch if 3D effect is enabledCTRL + ALT +

  #!/bin/bash( echo "user" sleep 2 echo "passwd" sleep 3 echo "do something in remote device" sleep 3 echo "exit") | telnet IP The above is non-interactive usage. If you need interactive usage, you can use round CT, and then

-------------------- The script is first extended and then formatted. One fat extension and one ext3 Partition ------------------- #! /Bin/sh## Partition and format the SD card script# Usage mksdboot. Sh -- device/dev/SDB Version = "0.1" Execute (){$

Shell programming control structure: expr, let, for, while, until, shift, if, case, break, continue, function, select 1. expr calculates the integer variable value S = 'expr 2 + 3' The operator numbers and parameters must be separated by spaces; 2.