When I punch from the windows gitbash command line:
set $HOME = c
and do :
echo $HOME
It does not set it to c? How can I change/set the value of an environment variable?
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4 Answers
A normal variable is set by simply assigning it a value; note that no whitespace is allowed around the =:
HOME=c
An environment variable is a regular variable that has been marked for export to the environment.
export HOME
HOME=c
You can combine the assignment with the export statement.
export HOME=c
4 Comments
adamdport
So what does OP's
set do?
chepner
Assuming a "normal" value of
$HOME (such that the unquoted expansion results in a single word), it sets the first three positional parameters to the values of of $HOME, =, and c, respectively. For example, set a b c; echo "$2" would output b.
charles ross
Also true for bash in general.
Alex 75
Worth to note that this variable will NOT be Windows Environment Variables. I mean, opening Windows Settings -> System -> Advanced System Settings -> Environment Variables you cannot find them nor for User neither for System. To achieve this goal use `` setx My_VARIABLE "my value" ``
If you want to set environment variables permanently in Git-Bash, you have two options:
Set a regular Windows environment variable. Git-bash gets all existing Windows environment variables at startup.
Set up environment variables in
.bash_profilefile.
.bash_profile is by default located in a user home folder, like C:\users\userName\git-home\.bash_profile. You can change the path to the bash home folder by setting HOME Windows environment variable.
.bash_profile file uses the regular Bash syntax and commands
# Export a variable in .bash_profile
export DIR=c:\dir
# Nix path style works too
export DIR=/c/dir
# And don't forget to add quotes if a variable contains whitespaces
export ANOTHER_DIR="c:\some dir"
Read more information about Bash configurations files.
4 Comments
BebopSong
You may not have answered the OP question but you have certainly helped me out with my question. I was trying to override the PERL5LIB environment variable for Git Bash on Windows and this allowed me to do it easily.
Yodle
You might want to edit #1 to mention it's the same command as in a Windows shell except with different syntax (
setx foo bar versus setx foo=bar). I misread what you were saying with that answer since you didn't mention setx.
Unknow0059
For some reason, Git Bash is ignoring my Windows' HOME environment variable. Meaning, it's not using my gitconfig but using its own inside Git/etc.
Vincent
but you couldn't set HOME or HOMEDRIVE via this method, correct? since you already known .bash_profile is under HOME.
Creating a .bashrc file in your home directory also works. That way you don't have to copy your .bash_profile every time you install a new version of git bash.
Comments
- Temporarily change the environment variable
export JAVA_HOME="C:\Program Files\Java\jdk-11"
Verify it's been changed
mvn -version
NOTE: Don't verify this via
java -version
- Permenantly change the environment variable
setx JAVA_HOME "C:\Program Files\Java\jdk-17"
NOTE: necessary to restart Git Bash first
