echo blank line

This article details the use of shell to remove empty lines in the file method, learning the SED, awk, Shell file detection methods, the need for friends can make a reference.The content of this section:Shell remove file Hollow line 1,shell remove

As we all know, if Echo follows an environment variable, but the variable is empty, the equivalent of an echo without any arguments, that is, whether the current echo is on or off. Many articles or tutorials offer solutions that add a dot echo

Questions: How to generate empty lines in PHP using the Echo method to output long strings to a Web page?Dutylist[2]=[new Array ("Teaching director", "9"), new Array ("deputy director of Teaching", "ten"), New Array ("Class teacher", "one"), new

1.1 Learning the Echo rem CD dir command Learning points:1. Display information: Echo2. Comment Statement: REM3. Directory Switching: CD4. Column File name: dir One, display information: Echo Before we learn the echo command, we'll build a new

The echo command for Linux, which is very common in shell programming, is often used when printing variable value under a terminal, so it is necessary to understand the use of EchoThe function of the echo command is to display a piece of text on the

Turn from: http://blog.chinaunix.net/uid-28458801-id-3460227.html Overlay writing (the original content in the file is covered) echo "AAA" > A.txtecho AAA > A.txtAdd style (The new content is added after the original content)echo "AAA" >> a.txtecho

The echo command for Linux, which is very common in shell programming, is often used when printing variable value under a terminal, so it is necessary to understand the use of EchoThe function of the echo command is to display a piece of text on the

As we all know, if ECHO is followed by an environment variable, but this variable is empty, it is equivalent to echo without any parameters, that is, whether the current ECHO is on or off. The solution provided by many articles or tutorials is to

The echo command of Linux, which is very commonly used in shell programming, is often used when printing variable value under a terminal, so it is necessary to understand the use of the following Echo The function of the echo command is to display a

Linux echo command learning function description: displays text. Syntax: echo [-ne] [String] or echo [-- help] [-- version] www.2cto.com. Note: echo sends the result string to the standard output by default. The output strings are separated by blank