Shell

When deploying a task, one of the necessary procedures is to send some files, such as installation packages, to a large number of servers. Although there is already a Brother Woo script available: A Python script written by the SSH and SCP features

Reprint: http://blog.gesha.net/archives/221/ Linux system time and hardware clock issues (date and Hwclock) summarize Hwclock, this is easy to faint: 1/etc/sysconfig/clock file, only valid for the Hwclock command, and only useful when the system

In writing a shell script, there may be a situation when you need to take a path of two paths. So, you need to use conditional statements to make the program make the right decisions and perform the right actions. The UNIX shell supports conditional

The shell can often be seen: 1>/dev/null 2>&1Eg:sudo kill-9 ' ps-elf |grep-v grep|grep $1|awk ' {print $4} ' 1>/dev/null 2>/dev/nullThe result of the command can be defined in the form of a%> output/dev/null represents an empty device fileWhere does

SSH is a toolkit to replace Telnet, FTP, and R commands, mainly to solve the problem of password transmission on the Internet. For system security and user's own rights, it is necessary to promote SSH. SSH is the abbreviated form of the English

Fundamentals of Shell ScriptingWriting specifications for 1.shell scripts2 variable and special variable application3 Local variables and global variables4 Test-judgment expressionIn some complex Linux maintenance efforts, a large number of

Today when I use Tomcat configuration, I use a Mac that uses some commands to configure Tomcat.Here's the problem:I am particularly troublesome to start the Tomcat service every time, because I have to go to the file directory where Tomcat is

Bash shell scripting Getting Started (ii)Use of the Read commandRole:Use read to assign the input value to one or more shell variables:-p Specifies the prompt to display-T TIMEOUTRead reads the values from the standard input, assigns a variable to

Differences in concepts such as consoles, terminals, virtual terminals, Tty,shell, etc.What is the exact difference between a ' terminal ', a ' shell ', a ' tty ' and a ' console '?A terminal is at the end of a electric wire, a shell was the home of

Shell-5.shell echo CommandEcho---display contentFormat: Echo [options] Text-N Do not wrap in the last line-E parsing escape character\a issued a warning sound\c Finally, no newline symbol is added.\f Line break\ r Enter1.-N do not wrap in the last

Description: This script is installed on the CentOS operating systemOne, the monitoring script is as followsvim/root/script/systemmonitor.sh#!/bin/bash#监控系统负载与CPU, memory, hard disk, number of logged on users, out of alert to send an email

In Linux shell programming, in most cases, test commands can be used to test the condition, here is a simple introduction, easy to use friendsFor example, comparing strings, judging whether the file exists and whether it is readable, etc., usually

String-related operations are often involved in the shell batch process. There are a lot of command statements, such as: awk,sed can do string various operations. In fact, the shell built a series of operating symbols, you can achieve similar

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

Not a new knowledge, but for a small white like me, if you can find an early morning to summarize the experience from the actual combat, will not be busy today only drink two glasses of water (well, bold but cautious thick skin is my life motto ╭ (╯^

 Create a script Linux has many different shells, but we usually use Bash (Bourne again shell) for shell programming, because Bash is free and easy to use. So in this article, all the scripts provided by the author use Bash (but in most cases,

Compile Windows Shell extension using DelphiAnyone familiar with operating system principles will know that a complete operating system provides a shell to facilitate common users.Use various features provided by the operating system. Windows (here

I. Shell Condition Statement (if usage) If statement structure [if/then/Elif/else/FI] If condition test statement Then Action [Elif Condition Action Else Action ] Fi If you are not clear about the conditional test statement, refer to:

Recently, I started to learn how to install Mongo in windows. It is not difficult to perform this operation. I still use it in Linux. But refer to some documents after installation. The title error was found when Mongo was started. Finally, this

Document directory Variable assignment and reference If sentence & | Operator Case statement Select statement ============================================== = While/for Loop Quotation marks Binary to decimal conversion Circular file copy