What is the mechanism that rustup uses to set the PATH variable? I couldn't find any entry in my .bashrc.
Apparently the PATH variable is exported in .profile in the user home directory:
export PATH="$HOME/.cargo/bin:$PATH"
The following command works on Mac:
source $HOME/.cargo/env
Related
I was wondering if there is a way to set a default folder every time I open JupyterLab. Is there any command I can run through Anaconda PowerShell Prompt? Or a JSON property I can modify in settings tab? Thanks in advance!
If you want to open specific file in directory a, say a/notebook.ipynb but then navigate the file browser to directory b, relative to the root directory, you can use file-browser-path query in the navigation URL (documented here):
http(s)://<server:port>/<lab-location>/lab/tree/a/notebook.ipynb?file-browser-path=/b
You can use this method from command line thanks to LabApp.default_url traitlet:
jupyter-lab --LabApp.default_url='/lab/tree/a/notebook.ipynb?file-browser-path=/b'
You can skip the opening specific file part:
jupyter-lab --LabApp.default_url='/lab?file-browser-path=/b'
If you want to change the root directory, please see this answer which explains how to do so with ServerApp.root_dir traitlet (in older versions of Notebook<7.0 and JupyterLab<3.0 used to be named NotebookApp.notebook_dir). Again, you can use it from command line, and even specify an absolute path:
jupyter-lab --ServerApp.root_dir='/home/user/project/'
# or on Windows say:
# jupyter-lab --ServerApp.root_dir='C/users/user/project/'
You can combine the two approaches, e.g.:
jupyter-lab --ServerApp.root_dir='/home/user/project/' --LabApp.default_url='/lab?file-browser-path=/project_subdirectory'
If you want to persist the changes (for either default URL or root dir), see the previously linked answer which details how to persist configuration.
Follow the answer . Just edit the alias alias my_jupn='source /home/$USER/anaconda3/bin/activate && conda activate MyPy38 && jupyter-notebook --notebook-dir=/home/$USER/Documents/Jupyter_Notebook'
and for JupyterLab alias my_jupl='source /home/$USER/anaconda3/bin/activate && conda activate MyPy38 && jupyter-lab --notebook-dir=/home/$USER/Documents/Jupyter_Notebook'
N.B. Here MyPy38 is your active environment name. and if any error occurs then change $USER to your UserName. Lastly, /home/$USER/Documents/Jupyter_Notebook will be change according to your choice.
According to the jupyter.org:
I configured like this.
Terminal command active your envirnment by conda activate Your_env_name and then jupyter lab --generate-config. jupyter_lab_config.py should be created in dir /home/$USER/.jupyter directory.
Find
# c.LabApp.app_settings_dir = '' and uncomment.
Then give your directory like this.
c.LabApp.app_settings_dir = '/home/$USER/Documents/Jupyter_Notebook'
Similar for jupyter notebook. jupyter notebook --generate-config and then nu-comment and edit like c.NotebookApp.notebook_dir = '/home/UserName/Documents/Jupyter_Notebook'
**NB: /home/$USER/Documents/Jupyter_Notebook is my changed default dir. Change it according to your need. **
The command
jupyter notebook --generate-config
will create a config file.
The path to this file is displayed in your terminal or PowerShell.
Set the desired folder path as the string c.ServerApp.root_dir in this file and make sure you uncomment the line after you set the string.
Windows users will have to use double backslash in paths, e.g.:
c.ServerApp.root_dir = 'C:\\YOUR\\PATH'
Hi I'm using pyspark interactively. I think I'm failing loading a LOCAL file correctly.
how do I check current directory, so that I can go to browser to take a look at that actual file?
Or is the default directory where pyspark is? Thanks
You can't load local file unless you have same file in all workers under same path. For example if you want to read data.csv file in spark, copy this file to all workers under same path(say /tmp/data.csv). Now you can use sc.textFile("file:///tmp/data.csv") to create RDD.
Current working directory is the folder from where you have started pyspark. You can start pyspark using ipython and run pwd command to check working directory.
[Set PYSPARK_DRIVER_PYTHON=/path/to/ipython in spark-env.sh to use ipython]
import os
cwd = os.getcwd()
print(cwd)
jil file contains below profile location:
profile: /apps/properties/autosys_env.rc
Following environment variables are set in autosys_env.rc file:
JAVA_HOME=/apps/java/jdk1.7.0_51
export JAVA_HOME
ENV_MODE=DEV
export ENV_MODE
PATH=$JAVA_HOME/bin:$PATH
export PATH
But, environment variables are not detected on executing jil.
It was not working because I was creating autosys_env.rc file in windows and then copy it into unix machine using Winscp and Putty.
It seems windows has some characters that are not supported in unix.
So, it works after creating autosys_env.rc file in vi editor.
Every time I need to add a new PATH in my bash_profile I just append it to my old path using something like
PATH=$PATH:.....
Then I export PATH at the end.
If I wanted to add another path and left out the above and just created a new path, would it reset the path to just this new path?
If I exported the PATH before the new path would it not even reach the new PATH?
If you make an export of the PATH it will live only in the current session. The changes into the bash_profile will be permanent, and take effect after restarting the terminal.
So if you export the PATH with the new content, it doesn't mind what content it has into the bash_profile, because you will overwrite it. But when you restart the session, it will have the content of the bash_profile file.
I hope this answer your question.
~]$ export PATH=/bin
~]$ echo $PATH
/bin
~]$ export PATH=${PATH}:/usr/bin:/usr/sbin
~]$ echo $PATH
/bin:/usr/bin:/usr/sbin
~]$ export PATH=/usr/local/bin
~]$ echo $PATH
/usr/local/bin
you use export to make a local shell variable global. Meaning, to make a shell variable available across inherited sub shell sessions.
Hence it is enough to export a shell variable just once. You can alter the values as you wish without exporting it again.
Read more here
When setting the export path in Unix, example:
export PATH=$PATH: $EC2_HOME/bin
If I quit terminal and open it back up to continue working, I have to go through all the steps again, setting up the paths each time.
I'm wondering how I can set the path and have it "stick" so my system knows where to find everything the next time I open terminal without having to do it all over again.
Thanks!
Open ~/.bashrc. This file is loaded every time you start up a new shell (if you're using Bash, which most people are). If you're using a different shell, the file may have a different name, like ~/.shrc.
Add the line you need to the bottom of the file:
export PATH=$PATH:$EC2_HOME/bi
Other info rolled up from elsewhere in the thread:
There are multiple places to put this, depending on your shell and your needs. All of these files are in your home directory:
For Bash:
.bashrc (executed when you shart a shell)
OR
.bash_profile (executed when you log in)
For csh and tcsh:
.cshrc
For sh and ksh:
.profile
Add it to your .cshrc file (for csh and tcsh), .profile file (for sh and ksh), or .bash_profile file (for bash)
You need to find your profile file and put that line in there. Suppose you use bash, the profile files are .bashrc and .bash_profile, found in ~. These files will vary depending on which shell you use.
You have to put those commands into one of the "autostart" files of your shell.
For bash this would be .bashrc in your homedirectory (create it if necessary)
add it to your .bashrc or another .bash startup file.
... and for ksh edit .profile.