echo tan

This article introduces how to use echo in linux. echo is a very simple and direct LINUX Command. First, we will introduce the standard command line, which contains three parts: Command_name option argument Okay. Back, echo is to send argument to

Let's introduce the standard command line, which contains three parts: Command_name option argument Okay, back, echo is sending argument out to standard output (STDOUT), usually to the monitor output. Or just run down and look at the echo command:

Common mathematical functions in php tutorials The tanh () function returns the hyperbolic tangent. SyntaxTanh (x) parameter descriptionX is required. A number. DescriptionReturns the hyperbolic tangent of x, defined as sinh (arg)/cosh (arg ). */

If one, if base 1, single branch 1.1 syntaxif语句语法 单分支结构语法： if [条件]; then 指令 fi 或 if [条件] then 指令 fi1.2 Examples[[email protected] day4]# cat if-single1.sh #!/bin/sh#功能：单分支if结构整数比较，用-lt格式例子#created by

The tanh () function returns the hyperbolic tangent.SyntaxTanh (x) parameter descriptionX is required. A number.DescriptionReturns the hyperbolic tangent of x, defined as sinh (arg)/cosh (arg ).*/Echo tanh (-m_pi); // output-0.996272076221Echo "

BASH: Procedural programming, in order to accomplish more complex tasks, support sequential execution, select execution, loop executionSequential execution: From left to right, execute command sequentially.Select Execute: Select to execute a

1. Splitting and merging Implode: Echo Implode (",", Array (' LastName ', ' email ', ' phone '));//Array to string Explode Print_r (Explode (",", ' Lastname,email,phone '));//String to array Split Print_r (Split ("[/.-]", "2008-9.12"));//or.

1. Partitioning and merging Implode: Echo Implode (",", Array (' LastName ', ' email ', ' phone '));//Array to string Explode Print_r (Explode (",", ' Lastname,email,phone '));//String to array Split Print_r (Split ("[/.-]", "2008-9.12"))///or. Or-

I'll give you two options:1, with ping command;2. Use the net view command.Use these two commands combined with a batch program to achieve your goal!These two bat is what I wrote before, you can change to become you use to get! Oh!1. Ping scheme

Summary of common php string functions. 1. the formatted output chop is the alias of rtrim (); ltrim () trim () nl2br () converts n to brprint, echo, printf (), sprintf (): echo () it is not a function. print () is a function and has returned values,