When I attempt to use the following command in Jupyter shell for Python "cd /Users/Donald/Documents/BUS6303/week 7/ocelma-python-recsys-48df9c4/ocelma-python-recsys-48df9c4/recsys/algorithm" I get a Invalid Syntax" error. What am I doing wrong?
I encountered this issue when I added a comment in the same cell. Create a new cell, without a comment, and try it again.
Did you verify that the folder actually exists?
If so, if could be the space in "week 7".
You could try this:
cd "/Users/Donald/Documents/BUS6303/week 7/ocelma-python-recsys-48df9c4/ocelma-python-recsys-48df9c4/recsys/algorithm"
Related
I'm trying to run an R script through the command prompt. My operating system is Windows 10. I'm having trouble running the code because there is a space in the file path of my argument. This is what I paste into the command prompt.
"C:\Program Files\R\R-3.4.3\bin\Rscript.exe" "C:\Users\Scott\Google Drive\RScriptsB\Bundle_Runner.R"
I get this error:
The filename, directory name, or volume label syntax is incorrect.
However, when I run it using a file path with no spaces, it runs fine.
"C:\Program Files\R\R-3.4.3\bin\Rscript.exe" "C:\Users\Scott\Desktop\Bundle_Runner.R"
The same behavior happens when I schedule the task through Task Scheduler: it doesn't work with the space, and it works when I remove the space from the file path.
I'm using Google Drive to sync work from multiple computers, so I'd like to be able to run my scripts using the file path with a space.
Any solutions?
FOR %%a IN ("C:\Users\Scott\Google Drive\RScriptsB\Bundle_Runner.R") DO "C:\Program Files\R\R-3.4.3\bin\Rscript.exe" %%~sa
would be my approach - the problem appears to be with R, not cmd.
Try this:
C:/PROGRA~1/R/R-3.4.3/bin/Rscript.exe "C:\Users\Scott\Desktop\Bundle_Runner.R"
Or
C:/PROGRA~1/R/R-3.4.3/bin/Rscript.exe C:/Users/Scott/Google~1/RScriptsB/Bundle_Runner.R
This is possibly related to an error reported at r-devel ("[Rd] Bug in RScript.exe for 3.5.0", https://stat.ethz.ch/pipermail/r-devel/2018-April/075869.html) that has been fixed the next day.
Perhaps the problem was already present in R 3.4.3 (you are using in your question).
Proposed workaround:
...add an extra first argument that has no space in it, e.g. Rscript --vanilla "foo bar.R"
To minimize the impact caused by --vanilla you could use
Rscript --no-save "foo bar.R"
instead (which just does not save the workspace at the end of the session).
Consider following:
$ cd /home/mydir
$ jupyter notebook --port=8888
In plain English, I am running jupyter server from /home/mydir directory.
Is there a simple way to get this directory from within a notebook regardless if it's a R notebook or a Python notebook or whatever? Maybe there is some magic command or variable?
NOTE: getwd() is not an answer as it returns directory of a current notebook but not the jupyter server root.
I have a similar problem and found your post, although I don't see a viable solution yet. Eventually I did found a solution, although it works only because I only care about Linux and I only care about Python. The solution is this magic line:
J_ROOT = os.readlink('/proc/%s/cwd' % os.environ['JPY_PARENT_PID'])
(I put it in a module in my PYTHONPATH so that I can easily use it in any Python notebook.) See if it is good for you.
Remember that your iPtyhon is just a Python module, so you can execute any valid Python code in a cell. So, if you started your notebook and haven't executed any directory changes in your code, you should be able to retrieve your cwd with the following in a cell:
import os
os.getcwd()
But furthermore, you can execute shell commands in cells, so you can retrieve other information in the cell. For example:
!which jupyter
should give you the path to your jupyter executable.
Which then leads you to running something like:
!jupyter --paths
which should give you something similar to:
config:
/Users/yourdir/.jupyter
/usr/local/etc/jupyter
/etc/jupyter
data:
/Users/yourdir/Library/Jupyter
/usr/local/share/jupyter
/usr/share/jupyter
runtime:
/Users/yourdir/Library/Jupyter/runtime
Frankly I'm surprised that all this time later there is still no built-in way to do this. I have used Isaac To's solution on Linux but recently had to make a jupyter notebook portable to Windows as well. Simply using os.getcwd() is fragile because a cell using it to set your JUPYTER_ROOT_DIRECTORY can potentially be called again, after you have changed your working directory.
Here is what I came up with:
try:
JUPYTER_ROOT_DIRECTORY
except NameError:
JUPYTER_ROOT_DIRECTORY = os.getcwd()
I put it in one of the first couple cells with the initial import statements. If the cell gets called again, it will not re-set the variable value because the variable exists and does not throw an exception.
It should be noted that unlike Isaac To's solution it sets the value to the directory the current .ipynb was run from, which is not necessarily the same directory as the top-level dir the user can access in the left hand file pane.
My suggestion is to use an intuitive approach.
Create a new folder within the Jupyter environment with a very unique name, for example, T246813579.
You can now locate the Jupyter working path by searching in your file explorer. For example, you can use the Windows Explorer in order to locate your new folder.
The expected result should look something like this:
C:\Users\my_user_name\JupyterHome\T246813579
The answer from #Isaac works well for Linux, but not all systems have /proc. For a solution that works on macOS and Linux, we can use shell commands, taking advantage of the ! shell assignment syntax in Jupyter:
import os
JPY_ROOT = ! lsof -a -p {os.environ['JPY_PARENT_PID']} -d cwd -F n | tail -1 | cut -c 2-
JPY_ROOT = JPY_ROOT[0]
print(JPY_ROOT) # prints Jupyter's dir
Explanation:
Get the process ID (pid) of the current jupyter instance with os.environ['JPY_PARENT_PID']
Call lsof to list the process's open files, keeping only the current working dir (cwd)
Parse the output of lsof using tail and cut to keep just the directory name we want
The ! command returns a list, here having only one element
Alternate Version
To save the os import, we could also use shell commands to get the PID. We could also do the subsequent string wrangling in python, rather than calling tail and cut from the shell, as:
JPY_ROOT = ! lsof -a -p $(printenv | grep JPY_PARENT_PID | cut -d '=' -f 2) -d cwd -F n
JPY_ROOT = JPY_ROOT[2][1:]
Hi i was checking and anyone can use commands very similar in cmd like dir mkdir etc.
But for example when i try to use command (cd ..) i couldn't
QProcess consola;
consola.start("cmd.exe /C " + comando);
consola.waitForFinished();
consola.waitForReadyRead();
This is the question how i can use more commands in cmd for qt for example.
At least from the command line:
cmd /C "cd \"
works as did directories other than root. (Note the parenthesis around the command since it contains embedded spaces.) However, this example isn't very useful because this executes the command shell, changes the directory in that command shell, and then the command shell disappears, and your current directory is back to where you started.
I recommend looking into the QDir class, which has methods such as "current ()" and "setCurrent ()" for getting and setting the current directory. There are equivalents for mkdir and many others. Also, using QDir is much more cross-platform friendly, where using the "cmd" shell is Windows-specific.
You don't say what you're trying to accomplish, so beyond that suggestion, it's impossible to know how to best help you.
Your process's current directory can be and mostly is different than current directory of your is running. Please read chdir manpage for that.
That command is mostly working but changing the current directory of your process.
In julia, I always start the program by typing
exec /Applications/Julia-0.3.2.app/Contents/Resources/julia/bin/julia
in command line.
How could I add "/Applications/Julia-0.3.2.app/Contents/Resources/julia/bin/julia" into PATH or set a variable so I don't need type all the directory everytime using julia?
BTW, i'm using mac os.
I figured out the solution, add following command to profile and refresh the terminal:
alias julia='exec /Applications/Julia-0.3.2.app/Contents/Resources/julia/bin/julia'
The simplified version of my question is how can I achieve a command such as the following.
gvim --remote-tab-silent -c mak
When I run this command I am hoping for a new tab to be opened, and to have the make command run. What actually happens however is there are two new tabs "-c" and "mak"
Is there a way to do this? My end goal is to be able to within vim run a command such as this to give me asynchonous make output.
!gvim --remote-tab-silent -c mak
Thanks in advance.
--EDIT--
I found the documentation for --remote, which explains how to do a remote command with opening a file. The syntax applies to remote-tab apparently.
To do what I want I am now using
gvim --remote-tab-silent +mak MakeOutput
Similarly inside vim I can use
!gvim --remote-tab-silent +mak
MakeOutput
It automatically opens the first error in a file for me, which is convenient I would think :)
It seems like what you're asking is how to execute commands asynchronously with updates when they complete.
Have a look at my AsyncCommand plugin. It's just wraps the vim syntax required to execute something and load it with --remote. I've uploaded AsyncCommand 2.0 that includes an AsyncMake command.
Add the script to your .vim/plugin and you can build with :AsyncMake or :AsyncMake target. Errors will be opened in your quickfix once the make completes.