2 ways to List environment variables in command line windows


Environment variables are used store the folder or file path with variable names.

Setting environment variables is required when installing java, tomcat, or derby applications.

The commands will not run as expected if environment variables are not set.

It’s difficult for a developer to tell whether environment variables are set or not from a command line in Windows.

This article explains different ways to print Windows environment variables from a command line.

  • set command
  • Get-ChildItem Env

set command to get environment variable list

set command in windows used to set the environment variables for command line scope

Syntax

set VARIABLE=path/value

Here’s an example of setting JAVA HOME to the jdk route.

set JAVA_HOME=c:\JDK1.9

SET commandalso list all environment variables

Here simple set command print all environment variables configured already

C:\>set
ALLUSERSPROFILE=C:\ProgramData
ANDROID_HOME=A:\android\sdk
ANT_HOME=A:\Java\apache-ant-1.10.0
APPDATA=C:\Users\Kiran\AppData\Roaming
ChocolateyInstall=C:\ProgramData\chocolatey
ChocolateyLastPathUpdate=132329753418192180
ChocolateyToolsLocation=C:\tools
CommonProgramFiles=C:\Program Files\Common Files
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
CommonProgramW6432=C:\Program Files\Common Files
COMPUTERNAME=KIRAN
ComSpec=C:\WINDOWS\system32\cmd.exe
DERBY_HOME=C:\db-derby-10.14.2.0-bin
DriverData=C:\Windows\System32\Drivers\DriverData
GOOGLE_API_KEY=no

if you have long list of environment variables, it is very difficult to see in a single page,

Then, You can output the all environment variables to file or can view by page by page

The below command using pipe with more list out environment variables one page at a time, on clicking enter keystroke, navigate page by page to end of result.

set | more

How do you print the environment variable list to text file?

with > and set command, It prints the list to output file.

Here is an example usage

C:\>set > output.txt

This will output the environment variables list to output.txt file.

Please note that administration permission required to run this command, Otherwise it gives Access is denied.

If you want to filter the list, you can use below command with keyword

C:\>set derby
DERBY_HOME=C:\db-derby-10.14.2.0-bin

Get-ChildItem Env to list environment variables with windows PowerShell

This is an other approach to print environment variables using Windows PowerShell.

First, go to windows + Run(R), type Windows PowerShell This will open powershell

Run the below command to list environment variable

Get-ChildItem Env:

Conclusion

This solves an problem for developer to know the environment list for java/derby/maven installation.

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