Linux 如何在 bash_profile 文件中添加导出语句？
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How to add export statement in a bash_profile file?
提问by Lost
I'm trying to learn that if I have to add export statement to set a variable in a bash_profile file . How would I do that ? For example if I have to add export AX = 'name' then should I simply write it at the end of file or do I need to write anything else as well
我正在尝试了解是否必须添加 export 语句以在 bash_profile 文件中设置变量。我该怎么做？例如，如果我必须添加 export AX = 'name' 那么我应该简单地将它写在文件的末尾还是我还需要写其他任何东西
采纳答案by Chris Seymour
Simply write export AS='name'anywhere in your ~/.bash_profilefile:
只需export AS='name'在~/.bash_profile文件中的任何位置写入：
# Append to the end of the file
$ echo "export AS='name'" >> ~/.bash_profile
# Update shell
$ source ~/.bash_profile
This first command adds the line you want to the file (or just use a text editor)the second updates the shells with the new variable.
第一个命令将您想要的行添加到文件中（或仅使用文本编辑器），第二个命令使用新变量更新 shell。
回答by Lucas
Typically, variables are declared and defined in one place and exported in another:
通常，变量在一个地方声明和定义并在另一个地方导出：
AX='name'
export AX
回答by Hemant Kumar
There are 2 scenarios:
有2种情况：
1. Exporting an independent variable
1. 导出自变量
For example if you want to export variable "AX" independently then use:
例如，如果您想独立导出变量“AX”，则使用：
AX = 'name'
export AX
2. Exporting an independent variable followed by appending it to some existing variable
2. 导出自变量，然后将其附加到某个现有变量
For example if you want to export variable "AX" independently followed by appending it to the class path then use:
例如，如果要独立导出变量“AX”，然后将其附加到类路径，请使用：
AX = 'name'
export AX
PATH=$PATH:AX
export PATH
