read environment variable

One, what is deferred environment variable extension? Delay variable Full name "Delay environment variable extension", to understand this thing, we have to understand what is called variable expansion!When we explain our command, CMD will first

2015-05-08 00:15 3896 people read review (US) Collection report This article has been included in:Classification:Advanced Software Development (419) Author of similar articlesX unix/linux Miscellaneous (118) Author of similar articlesX

1. Dynamic Library path settings Linux down with dynamic libraries and windows are not the same. Linux executables rely on the configuration file to read the path, so sometimes you need to set the path to the following export ld_library_path=/home/..

1. Setting up a dynamic library path the Linux downgrade is not the same as Windows. Linux executables rely on the configuration file to read the path, so there are some times need to set the path specific operations as follows export

After you add or modify an environment variable in the environment variable, advanced, properties, my computer, you need to restart the system for it to take effect. Is there any way to make it effective immediately? Here's a way to do this:To

Before learning about the process control knowledge, we need to understand a single process of the operating environment.In this chapter we will look at the following: How the main function is called when the program is running; How

The shell supports custom variables.Defining variablesWhen defining a variable, the variable name does not have a dollar sign ($), such as: VariableName="value" Note that there can be no spaces between the variable name and the equals

Environment variable; location parameter variable; predefined variable, environment variable Environment Variable   Set the environment variable: 1. export variable name = variable value 2. variable name = variable value Export variable name (Export

Understanding of the Bash environment variable Parsing Vulnerability 1. What are environment variables?Both Windows and Linux programs support environment variables. Generally, environment variables are stored at the beginning of the process memory

environment variables, or global variables, exist with all the shells, and when you log into the system, you have the corresponding system-defined environment variables. The environment variables of Linux are inherited, that is, the child shell