Since today my terminal shows all kind of variables on startup.
This is my ~/.zshrc file:
I don't think something bad will come of it but I'm just wondering how this happened and how I can turn it back off.
Thankyou for your help!
export is called as a command, and shows all the exported vars.
You should make the
export
JAVA_HOME=...
A single line, so export isn't called without args:
export JAVA_HOME= ...
Related
Usually I will nano .zsh_profile
Then I will edit the path
#PYTHON
export PATH=/Users/ffff/Library/Python/3.8/bin:$PATH
# JAVA
export JAVA_HOME=$(/usr/libexec/java_home)
export PATH=$JAVA_HOME/bin:$PATH
#ANDROID
export ANDROID_HOME=/Users/ffff/Library/Android/sdk
export PATH=$ANDROID_HOME/platform-tools:$PATH
export PATH=$ANDROID_HOME/tools:$PATH
export PATH=$ANDROID_HOME/tools/bin:$PATH
then I will save and exit
Then I will
source .zsh_profile
I will test the Java and ADB all is good, but one I open a new Terminal from my mac, it will say ADB and JAVA and Android_HOME not found
Why is it not persist? Did I miss out anything? My mac version is 12.2.1
The .zsh_profile file, has no special meaning. This is probably a confusion form Bash, where the bash_profile is executes for login shells. In Zsh, that equivalent would be ~/.zprofile. You might have some code in your .zshrc file, that overrides the PATH variable with something else. Because, as oppsed to .zprofile, the .zshrc file gets executed for every interactive non-login shells.
So my advice, checkout .zshrc and see if there's something overriding the PATH there, if so, maybe you want to change that, and NOT to execute these commands you want to add for every time a shell is opened, you should put them in .zprofile, so they only get executed once at login.
I created a.bash_profile and defined
export PATH=/user/local/bin
rather than
export PATH=/user/local/bin:$PATH
Then, I ran
source ~/.bash_profile
Now none of the command, e.g., ls works. Is there a way to back out this change? Thank you.
If you have fixed your .bash_profile file, you just restart bash to get your $PATH back. If that's not an option, or you can't fix the file externally, you can do export PATH="/bin:/usr/bin:/usr/local/bin", which should give you enough to get to vi or some other text editor so you can fix your .bash_profile, then you can restart bash.
Whenever I open a terminal, a message appear on top of it saying what I wrote in the title.
I think I messed up with the /etc/profile file when trying to get maven work.
I read some infos on exporting variables, but couldn't find my error, since I followed a guide that worked fine for other people.
The profile file I mentioned has these lines at bottom:
JAVA_HOME=/usr/local/java/jdk1.8.0
PATH=$PATH:$HOME/bin:$JAVA_HOME/bin
JRE_HOME=/usr/local/java/jre1.8.0
PATH=$PATH:$HOME/bin:$JRE_HOME/bin
export JAVA_HOME
export JRE_HOME
export PATH
Setting $JAVA_HOME let me use properly Maven, but creates this annoying message. Can you help me?
As others mentioned in the comments, you are trying to export PATH. instead of PATH somewhere. You might want to check /etc/profile, ~/.bashrc and ~/.bash_profilefiles and try to find this invalid export.
The source you provided is technically ok and you don't need to add any $ signs. Your PATH will contain $HOME/bin value twice though. You might want to change it to look like this:
export JAVA_HOME=/usr/local/java/jdk1.8.0
export JRE_HOME=/usr/local/java/jre1.8.0
export PATH="$PATH:$HOME/bin:$JAVA_HOME/bin:$JRE_HOME/bin"
I am unable to open bash profile. I had set the Java and Android path but suddenly it is opening. But when I run echo $PATH it is displaying the paths correctly. Now I need to add path to bash profile.
Could anyone please help me?
Your $PATH is wrong :
/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin:/Users/qsgtechnologies/Library/Android/sdk/platform-tools:/Users/qsgtechnologies/Library/Android/sdk/tools
This doesn't use standard default path, and, unless this is totally intentional, I recommend you not to do this.
You've got to fix it running this (note /bin:/usr/bin:):
export PATH=/bin:/usr/bin:/Library/Java/JavaVirtualMachines/jdk1.8.0_45.jdk/Contents/Home/bin:/Users/qsgtechnologies/Library/Android/sdk/platform-tools:/Users/qsgtechnologies/Library/Android/sdk/tools:
The next time, be sure to use this syntax:
export PATH=$PATH/YourNewPath:
Since you removed /bin:/usr/bin: you where unable to change your bash profile because bash wasn't able to locate your executables.
Fitting your needs, here's your current bash_profile:
export JAVA_HOME=$(/usr/libexec/java_home)
export ANDROID_HOME=/Users/qsgtechnologies/Library/Android/sdk
export PATH=$JAVA_HOME/bin:/usr/bin:$ANDROID_HOME/platform-tools:$ANDROID_HOME/tools
Change it to (note that YourNewEntry is a placeholder for the value you need)
export JAVA_HOME=$(/usr/libexec/java_home)
export ANDROID_HOME=/Users/qsgtechnologies/Library/Android/sdk
export PATH=$JAVA_HOME/bin:$ANDROID_HOME/platform-tools:$ANDROID_HOME/tools:/YourNewEntry
Then apply your changes:
source ~/.bash_profile
I need to set some environment variables in Ubuntu. I do the following and it works:
export PATH="/home/vagrant/ns-allinone-2.35/bin:/home/vagrant/ns-allinone-2.35/tcl8.5.10/unix:/home/vagrant/ns-allinone-2.35/tk8.5.10/unix:$PATH"
export LD_LIBRARY_PATH="/home/vagrant/ns-allinone-2.35/otcl-1.14:/home/vagrant/ns-allinone-2.35/lib"
export TCL_LIBRARY="/home/vagrant/ns-allinone-2.35/tcl8.5.10/library"
But I move the same thing in a script envexport.sh and execute it, the environment variables are not getting set.
Where am I going wrong? How to accomplish this?
Thanks.
If you just run the script, the environment variables get destroyed when the script finishes.
Use . envexport.sh. That way the commands get executed in the current shell (environment).
When you run a command in the shell, the shell creates a subprocess (child process). All the environment variables which were defined or changed down in the subprocess will be lost to the parent process.
However if you source a script, you force the script to run in the current process. That means environment variables in the script you ran will not be lost.
One thing that may help is if you will want those variables set for all of your sessions you can place the same commands in your .bashrc file by running the following command and pasting the lines in the file.
vim ~/.bashrc
and the run
source ~/.bashrc
in any terminals you currently are running. If you start any new terminals they will automatically have your directories added to your path.