Shell

Basic operation of the service/etc/init.d/sendmail Start # Launch service/etc/init.d/sendmail Stop # Close Service/etc/init.d/sendmail Status # View the current status of the service/date/mysql/bin/mysqld_safe--user=mysql # start MySQL background

Function: Automatically detect if there are not partitioned data disks, format new data disks and mount Solved what problem: one-click to detect whether there are not partitioned data disks, and can be formatted and automatically mounted,

Recently, just need to test the stability of the new station, so write a shell script to the local (recently changed MAC), to real-time view you need to monitor the status of the Web page, and sent to the designated mailbox.Here's a compliment. OS X

Script content: The code is as follows Copy Code #!/bin/bash# Author:mos# Script Name:mos_ca.sh# Date & time:2013-01-06/23:05:35# version:1.0.2# Description:#[-f/etc/sysconfig/mos_ca.conf] &&.

Du command Disk Management The du command also looks at the usage space, but unlike the DF command, the Linux du command is a view of the space used by files and directory disks, or there are some differences from the DF command. Grammar du

Introduction to Linux file commands: This command is used to identify file types and to identify the encoding format of some files. It gets the file type by looking at the header information of the file, not as if Windows determines the file type

A start to build the Chinese blog Alliance, both bloggers remind me to do Web site Daquan maintenance of this kind of website is very troublesome, need a lot of energy to debug some of the aborted site, but also to take the blog Encyclopedia of Pine

1. Character truncation:If the character truncation is a generic path, you can use both the basename and dirname tools:BaseName can truncate a filename from a file path For example: Copy Code code as follows: $

Several cases of sqlplus and shell passing value to each otherScenario One: The simplest invocation of sqlplus in the shell$cat test.sh#!/bin/shSqlplus Oracle/[email Protected]>file.log SELECT * from Test;ExitEOF #注意EOF要顶格写$sh test.sh$cat

Use shell scripts to implement a one-click installation of the LANMP system. The operating system used is CentOS 6, which does not differentiate between 32-bit and 64-bit, requiring the machine to connect to the Internet. Supports both LAMP and LNMP,

Create a shell scriptWhen you create a shell script file, you must specify the shell to use in the first line of the file, in the format:#!/bin/bashCreate and execute SH scriptCode 1-1[Email protected]:/data# cat demo1 #/bin/bashdatewho[email

Command-line argumentsThe most basic way to pass data to a shell script is to use command-line arguments, which allow you to add data values to the command line when you run the scriptReading parametersBash Shell assigns some special variables

In the previous blog post, we have learned how to coordinate how each level in the whole system works, and the command issued by the application layer reaches the drive layer under the kernel, thus achieving the purpose of operating the hardware

Description: +n is greater than N,-n is less than n, n is equal to N.Find/-amin-30-ls # finds files accessed in the last 30 minutes of the systemFind/-atime-2-ls # finds files accessed in the last 48 hours of the systemFind/-mmin-10-ls # finds files

The shell itself is a program written in C, which is a bridge for users to use Linux. The shell is both a command language and a programming language. As a command language, it interprets and executes user-entered commands interactively, and as a

There are four kinds of arithmetic operations in Linux, namely expr,let,$[],$ (()).Here are the four ways to use the arithmetic operations, respectivelyFirst, the use of expr[[email protected] ~]# Expr 1 + 23[[email protected] ~]# expr 1-2-1[[email

Guide When you're going to really manipulate your Linux system, there's nothing like a command-line interface that lets you do that. To be a Linux master, you must be able to understand the different types of shell commands and use them

Until cycleThe environment used to perform loops when a proposition is falseWhen a proposition is false, it enters the loop; exit the loop when the proposition is trueOr if the condition is not satisfied, enter the cycle of the sceneIn logical

In the bash shell, there are 2 main classes of Process Control commands: " condition ", " loop ". "Conditions" are: If, case, the "loop" has: for, while, until; command select is both "condition" and "loop". Either way, the condition test is

# # # Bash in the History command in the Shell----------In daily operations, we often use the history command to check the historical commands executed on this machine, or at what time the commands are executed. The history command does not show the