Usually how much will use the shell to write small tools, and these gadgets run the first thing is to parse parameters, here summarizes the next Shell Script processing command line parameters of the method.
A more common practice is to parse
[This is my own study notes, welcome reprint, but please specify the source:http://blog.csdn.net/jesson20121020]
Take a look at some of the variables in the shell today.
Variable Type:There are several variables in the shell:1) Local
1, in PHP, sometimes we need to echo out the JS script, and this script with PHP settings variablesHow to output, a bit fastidious, write down to spare. Here's how:(1) The first method$_HG = ' Hong ';Echo ' ';?>(2) The second method, the
When you use Python for scripting, it is often necessary to invoke the Python script module in the form of a terminal interaction. At this timeSupport for providing the underlying command-line parameters in a Python module is essential. So, in
$CatOpenstack_install.SH #!/usr/bin/EnvBashfunctionUsage {Echo "usage:$0 [optaion] ..." Echo "Master Install OpenStack Master in the This system." Echo "COMPUTE install OpenStack compute in the This system."Exit}functionprocess_option { Case " $"
Heaven Zhuhai Branch Rudder note : Originally this series is to prepare a book, details please see the earlier blog "to seek partners to write the deep understanding of Monkeyrunner" books. But for many reasons, there is no wish. So the draft is
Arguments is the values you pass to a Perl script. Each value on the command line after the name of the script is assigned to the special variables$ARGV [0],
$ARGV [1],
$ARGV [2], and so on. The number of arguments passed to the script
Text files are a powerful system management tool for system administrators. This seems impossible for the current advanced graphic interface and multi-user operating systems. However, simple text files, such as NotePad files, are still a key
Create a scriptThere are many different shells in Linux, but usually we use Bash (Bourne again shell) for Shell programming because bash is free and easy to use. So the script I've provided in this article is all about using bash (but in most cases
Create a scriptThere are a lot of different shells in Linux, but we usually use bash (Bourne again shell) for Shell programming because bash is free and easy to use. So the script I've provided in this article is all about using bash (but in most
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.