I used addpath(pwd) to get my .m files working in my projects directory. When I close the window and start a new window, the path I just added is gone. But the files still run.
Is it in my path or not? How do I see the directories I have added to my path?
Also, . is the first entry I see from path. Does that mean I don't need to add any directories because it will always search the current directory first?
Thanks.
Basically, yes.
You can add a directory to the search path using addpath(), but as you know, it only exists for the current session and is reset when you restart Octave. If you want a path to survive between sessions, add it to your octaverc, a script file that gets run whenever a new session gets started. Example path to octaverc file is:
C:\Octave\3.2.4_gcc-4.4.0\share\octave\site\m\startup
Since . is in your path by default, Octave will search your current directory for any function files that it needs. Using addpath(pwd) is somewhat useless if you're just going to stay in the same directory. However, there are some cases where it'd be useful, if for example you have a directory that contains your functions, and another one that has the data that you're working on: you could start in the functions directory, do addpath(pwd), and then cd to the data directory while still being able to use your functions.
You can create batch file, which will start Octave with your directory path. Please see example below:
octave-3.6.4.exe -p "C:\MyOctaveDiretory"
-p means addpath()
addpath(pwd); savepath();
Done.
I think there is a bug in Octave (I use version 4.0.3 on Windows). When I create a new file in current path, this can't be called by Octave ("error: 'foo' undefined near line 1 column 1"). If I restart Octave, it works. This addpath(pwd) trick helps me a lot (before I unsuccessfully tried rehash() and cd elsewhere and back again).
If you had the same problem, the reason for the symptom might be:
Start Octave.
Create newfile.m.
Call newfile - fails since Octave did not register its existence.
addpath(pwd) - causes Octave to register it.
Close Octave
Start Octave - now pwd is gone from path, but newfile.m is registered at startup.
call newfile - works
I faced a similar problem in adding path where the path was added by using addpath command directly in Octave GUI (Command Window). The path added was being shown in console window but none of the functions worked.
The problem was solved by changing the path directory from Windows directory to some other direction where OS is not installed.
Related
I have been using the gvim command :w to save and it works fine saving it to the desktop. However with the vim program, when I use the command :w, I cannot find where the saved file is located.
It should save to whatever directory you started writing it in (you can see that in the command line). You can also use your computer's file search to locate it and then inspect for the file path.
As said by others: by default it saves in the directory where you started it. But if you aren't aware in which directory you started, then a way to find out is to use the :pwdcom in vim. This will output the current directory. That's where vim will store the file.
C:\Users\"windows user"\AppData\Local\Packages\KaliLinux.54290C8133FEE_ey8k8hqnwqnmg\LocalState\rootfs\home\"WSL user"
Adding another answer to get the filename as well.
As mentioned by Cary and Jeen, vim saves your file to the directory from where it is started. You can get the directory where it is saved using :pwd.
If you are interested to get name of the file, it can be done by ctrl + g when your laststatus=1, which is the default value.
I usually set laststatus=2 which always show the filename.
Can anyone tell me where my file may have gone after this command?
The file I'm missing is stats.cpp
And what is the correct command to move it from directory prog3a to prog3c?
Thank you.
Since you did not post the actual command you used I cannot tell you what happened to the file. What I can say is that unless you used the rm command, the file is not gone. Probably got its name changed if you cannot find it or it got moved somewhere else other than the intended destination.
The correct command you should use is
mv prog3a/stats.cpp prog3c/stats.cpp
This command should be run in the directory where both prog3a and prog3c folders exist (cd to it before running the command. This is assuming they're both inside the same directory).
A more specific answer can be provided if you tell us which command you initially ran specifically and the full paths of each folder.
I am trying to execute a Makefile script and my Mac complains about 7zcat, although I already have 7z installed.
/bin/sh: 7zcat: command not found
Any thoughts on what's missing on my system? Thank you!
I have never used 7zcat before.
However, it looks like it needs to be installed on your system.
https://github.com/essentialkaos/7zcat
Also, after you download install 7zcat you have to give it execute permission with chmod. Finally, you have to execute it by calling its full path for example if you installed it to the directory you are in you would run ./7zcat file.7z or you would add the path to the file to your environment's $PATH variable.
I hope this helps. You might have to do some more research though.
When you open a Terminal window and type 7zcat and hit enter, what happens? Same message? Well, if you cannot use it, why should make be able to use it? Where and how have you installed 7z? Is the folder with the 7z binaries in your PATH? Since if it isn't, of course the command won't be found.
When the system shall run a command, it will search for this command in the directories stored in the PATH variable. Execute echo $PATH in terminal and you will get a colon separated list of directories; only these directories are searched for binaries. So either you must move your binaries to one of these (or put a symlink to one of these) or add the directory with these binaries to the PATH.
Yet there is no official 7z command line installer for MacOS, which brings me back to the original questions "Where and how have you installed 7z?" And are you sure that whatever you installed even includes a 7zcat?
I just shifted from a windows machine to a apple machine at work. I have no experience with apple and this is the first time I am using OSX.
I have a matlab script that I have to run on this machine but I cannot seem to get the path to my files.
My files are on a network drive. In windows its as simple as U:\Matlab Now I can access my files in the explorer but cannot seem to set them in Matlab using cd
To get the path of my files I right clicked on the folder and copied the where It provided me with this:
Volumes/home9/MATLAB/
Now to set these paths in Matlab I did this:
cd('Volumes/home9/MATLAB/')
But am provided with the error:
Cannot CD to Volumes/home9/MATLAB/ (Name is nonexistent or not a directory).
As you can tell I have no idea what I am doing. Some guidance would be appreciated.
Thank you
I think you meant to use which, not where. where doesn't exist in MATLAB! Now, your problem is probably due to the fact that you need to prepend your path with /. Therefore, your path should be: /Volumes/home9/MATLAB/. If you don't include the /, it assumes that the directory is local or where MATLAB has currently defined the working directory to be. Judging from the context, you want the absolute path of the directory, and that's why you need the / character as there is a Volumes directory in your root directory.
Try that and see if that works!
I am having difficulty installing something, and wanted to write a detailed list of what I did (including all paths, because I am new to Linux, and have problems reading things unless the full path is listed)
1) I am trying to run a program called "pslToBed". I downloaded it from here (http://hgdownload.cse.ucsc.edu/admin/exe/linux.x86_64/).
2) It downloaded a single file called "pslToBed". It looks like a binary file (all jibberish at least), and I saved to the directory /Users/MacOwner/Desktop/rnaseq/pslToBed
3) I did echo $PATH, and got the following
/usr/local/bin:/Users/MacOwner/anaconda/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/git/bin:/usr/texbin:/usr/X11/bin:/opt/local/bin:~/bin:/Users/MacOwner/Desktop/bedtools2-2.19.1
4) I selected one path from step (3), namely /usr/local/bin
5) I did: cp /Users/MacOwner/Desktop/rnaseq/pslToBed /usr/local/bin/
6) I added the same line to the bottom of both ~/.bashrc and ~./bash_profile:
export PATH=$PATH:/usr/local/bin/pslToBed
Then, I returned to /Users/MacOwner/Desktop/rnaseq/ and tried to run pslToBed but got an error -bash: /usr/local/bin/pslToBed: cannot execute binary file
I know this may be straightforward to experienced users, but I am stuck, even after searching the internet for several hours now. Do my paths and ideas look correct? And if not, what should I do to get this program running?
First, see what kind of file you have:
file plsToBed
This will print the kind of file (including details about the target architecture).
Next, there's no need to copy the file anywhere before trying to run it. If it's in a particular location and you have cd to that location, then simply:
./plsToBed
will execute it from the current directory.
You shouldn't have been able to copy to /usr/local/bin without being root (I hope you're not doing all this as root).
You don't want to add the name of the file itself to the PATH environment variable; the PATH is a list of directories, not files.