Is it possible to open a file from the postinst script of a deb package in an external application? I'm creating an installer for my software and I want to open a README.md Markdown file at the end of the installation. Tried to use xdg-open from the postinst script but it fails as Markdown files are not recognized. Linking the Markdown file to a text file (using ls -sf README.md README.txt) results in it being open in the terminal of the installation process instead of opening whatever application the user have defined to open text files. This is close to useless as, by default, this terminal is not visible.
To "open" a file in a noninteractive environment is not well-defined in the first place; so no, what you are asking cannot be done reliably.
There are situations such as apt-cron where there is not a human involved at all, let alone then the administrator logged in to an X session where something like xdg-open would make sense (and on a multiuser system, how would you figure out which logged-in user(s) should open the file?)
The way for a Debian package to alert administrators (and, to some extent, their users) to significant information is to ship a NEWS.Debian file. This is a text-only file with no markup facilities, but you could put in a brief message which refers to your Markdown file for more information.
Related
So i was trying to install the XP Pen Driver for my Deco 01 v2 graphics tablet on my Linux Mint 19.2 Tina when i came to encounter the following error:
./Pentablet_Driver: /usr/lib/x86_64-linux-gnu/libQt5Core.so.5: version `Qt_5.10' not found (required by ./Pentablet_Driver)
I went on to install qt 5.10, still the same error. Others suggested to just change the path wth sudo gedit /etc/ld.so.conf.d/randomLibs.conf which didn't change a thing.
Link to drivers:
https://www.xp-pen.com/download-440.html
The manufacturer has a page describing how to set up their software on Linux with pictures. However, when following them, you end up with a folder name somewhere along the line that has spaces in it, which causes issues.
So a modified set of instructions might look like this:
Connect your XP-Pen product to the computer.
Download the Linux Beta driver from XP-Pen official website.
When the download is complete, extract the compressed folder.
Rename the extracted folder to something without spaces.
Inside the renamed folder is another compressed folder which should be extracted.
Inside the final extracted folder, ensure "Pentablet_Driver.sh" has execution permissions by right clicking on it and going to "Properties->Permissions" and verifying that "Allow executing file as program" is checked.
Open the terminal. (CTRL+ALT+T)
Type "sudo ", then drag Pentablet_Driver.sh from the file browser onto the terminal.
Type the password to complete.
Make sure that you write exactly
sudo ./Pentablet_Driver.sh
instead
sudo ./Pentablet_Driver
I had the same error until I noticed that I forgot to add .sh at the end.
I have a rmarkdown document that I render regularly with rmarkdown::render
It works fine on my computer (Windows) as I have RStudio installed, and it has setup automatically the path to pandoc.
However when I try to run it on my server (outside RStudio), it fails with error that pandoc is not found.
How can I set up manually the path the pandoc from my script? Without changing the configuration on the server.
I have tried this but it doesn't work:
Sys.setenv(RSTUDIO_PANDOC="PATH_TO_MY_PANDOC_BIN/binaries/pandoc/pandoc.exe")
I suggest to set the system path for pandoc (Windows 10 instructions):
1. In the Start menu, search for "Edit the system environment variables"
2. At this point, Windows may ask you for username + password (for a user with permission to change system settings)
3. Click "Environment Variables" button
4. In the lower part of the window (System variables), select the line with "Path" and click Edit
5. Add the path to the folder where pandoc.exe is, but not including "pandoc.exe" or a slash at the end
Sys.setenv(RSTUDIO_PANDOC="PATH_TO_MY_PANDOC_BIN/binaries/pandoc/pandoc.exe")
That is actually almost correct, just omit the *.exe files, write the path only up to folder contain pandoc.exe
like this :
Sys.setenv(RSTUDIO_PANDOC="PATH_TO_MY_PANDOC_BIN/binaries/pandoc")
i believe this doesn't require admin rights
I'm using a Windows 7 x64 machine with R-3.1.0. I installed the Rserve package through Rstudio.
The start of Rserve is successful with the following code in Rstudio:
library(Rserve)
Rserve()
I got the following output:
Starting Rserve...
"C:\R\R-31~1.0\library\Rserve\libs\x64\Rserve.exe"
My problem is that I couldn't locate the configuration file. Apparently it can't be "/etc/Rserv.conf".
I did come across a webpage saying that the config file is Rserv.cfg in the working directory (unless changed at compile-time). But which working directory? I have checked the working directory of the current R project as well as the Rserve library directory, but it was not there...Could someone help me with this please? Thank you.
Rserve does not automatically come with a config file, you must make one. Best steps for doing so:
Navigate to the file where you just installed Rserve.exe (C:\R\R-31~1.0\library\Rserve\libs\x64\R, based on the message you copied here)
Find Rserve.exe, Reserve_d.exe, and Rserve.dll there. Copy these files.
Navigate to where R.dll is on your computer. This is probably C:\Program Files\R\R-3.1.3\bin\x64, but may be different depending on where you installed R to.
Copy the 3 files mentioned above to this location.
Create a text file here named "Rserv.cfg" with the arguments you are looking for, such as port 6312 or library(mvoutlier). Yes, I know that this is different from the documentation, but if you start Rserve_d.exe you will see that this is the file it is looking for. I have not had success naming it anything else.
You can start Rserve by specifying the location of the config file. In R instead of just Rserve() try the following:
Rserve(args="--RS-conf C:\\folder\\Rserv.cfg")
If path is more complicated you need to massage it a little bit:
Rserve(args="--RS-conf C:\\PROGRA~1\\R\\R-215~1.2\\library\\Rserve\\Rserv.cfg")
Look in the $RHOME/bin directory
If you can't find it here is a different way to approach it:
Download Rserve at [http://rforge.net/snapshot/Rserve_.tar.gz], and save it in your desired directory
Run R CMD INSTALL Rserve_.tar.gz
This allows you to leave Rserve where you want it.
After looking at the Rserve source code and making some test I found that on Windows platform Rserve try to load the configuration file from the current working directory. Also pay attention because on Windows the file name is RServ.cfg and not Rserv.conf as documented.
The current working directory depends of the process, for example using RStudio by default it is your Documents and Settings folder:
C:\Users\[username]\Documents
but can be changed in the "Global Options" of the IDE
So you can create an "RServ.cfg" text file in that directory with your needed options and starting RServe in the usual way in RStudio
Rserve()
will load your configuration.
I'm trying to install the great table of contents extension in a new computer. but I cant find it anymore. the only page I do find does not explain how to install the extension on windows.
So.. How can I install it, and why is it not a part of the official Ipython notebook? I simply can't understand how people are getting along without it.
I've installed toc nbextension successfully with Jupyter 4 (ie. ipython notebook 4) recently.
In fact installing extension is easier than before :)
I post my solution here, may it help.
## download
mkdir toc
cd toc
wget https://raw.githubusercontent.com/minrk/ipython_extensions/master/nbextensions/toc.js
wget https://raw.githubusercontent.com/minrk/ipython_extensions/master/nbextensions/toc.css
## install and enable
cd ..
jupyter-nbextension install --user toc
jupyter-nbextension enable toc/toc
A bit more explain:
install will copy toc to ~/.local/share/jupyter/nbextensions/
enable will modify ~/.jupyter/nbconfig/notebook.json.
You can check these two place to see what happened.
Note: we use enable toc/toc here is because toc.js is in ~/.local/share/jupyter/nbextensions/toc/.
If you put toc.js and toc.css directly in ~/.local/share/jupyter/nbextensions/ then you should use enable toc here.
Edit
Sorry, I didn't notice the orginal problem is on windows. I'm not sure if it's same for windows jupyter, any report is welcome.
Update
Now the toc nbextension has been added into this project which provide a collection of kinds of nbextensions. It's very easy to install and manage, worth to try!
I cannot tell you specific Windows advice, but think the key points should be platform independent:
Create a profile (either a default profile or a named one - you'll probably want default to start).
Locate where the profile is.
Add the custom.js file into the profile.
Edit the custom.js file to point to the notebook extension code.
In a bit more detail, setting up a profile is covered in detail here but for a default profile just go to the command line and enter
ipython profile
Next, locate where your profile is stored by typing at the command line
ipython locate
Call that <profile_dir>.
The rest follows the (Windows equivalent of!) the instructions on the link you have: underneath <profile_dir> navigate to (creating any directories that do not already exist)
<profile_dir>/static/custom/
and add the custom.js file as shown. Then edit the first line, where it has "nbextensions/toc" to point to the location where you have placed the toc.js file you have downloaded. This location is relative to the <profile_dir>; for me I have
<profile_dir>/static/custom/custom.js
<profile_dir>/static/custom/nbextensions/toc.js
<profile_dir>/static/custom/nbextensions/toc.css
and the first line of custom.js reads
require(["/static/custom/nbextensions/toc.js"], function (toc) {
Finally, note that this is with version 1.1.0 of the notebook - if you're using an earlier version I strongly suggest you upgrade before trying this.
You'll also find the official installation instructions at:
https://github.com/minrk/ipython_extensions
These instructions include curl commands for retrieving the toc.js and toc.css files from GitHub, which worked fine for me in a bash shell on linux Mint.
For Windows 7, I used a Git Shell (see http://msysgit.github.io/) to execute the curl commands
This IPython Notebook semi-automatically generates the files for minrk's table of contents in Windows. It does not use the 'curl'-commands or links, but writes the *.js and *.css files directly into your IPython Notebook-profile-directory.
There is a section in the notebook called 'What you need to do' - follow it and have a nice floating table of contents : )
Here is an html version which already shows it:
http://htmlpreview.github.io/?https://github.com/ahambi/140824-TOC/blob/master/A%20floating%20table%20of%20contents.htm
I have an install.bat file and a resource folder. so long as these two files are in the same directory, if you run install.bat, it will install a my lwjgl game. so what im trying to do is make a self extracting file that when completed runs the launch.bat file. I have tried using iexpress, and got it working for the most part. i have added in all my files and such so it will extract to some directory and then i can run the install.bat file to get my program to work. thing is though, i want the exe i created with iexpress to launch install.bat when its finished. so, i tried using the option in iexpress that says it will execute a command when finished the "installation" (using quotes because its not the actual installation, just extracting the files to some directory specified by the user). when i get to the step where it says what i would like to execute during and after the "installation". during the installation i left blank. after the installation i chose the install.bat file. when i try to click next though, it tells me i must choose something for the command during the extraction. I don't have anything specific to do during the installation so i just said "echo." (without quotes). after i was done i tried running the installer. before it even prompted me for a folder to extract to, it told me that echo. could not be executed. so i went back into my installation (via a .sed file) and changed the "echo." to "pause". that didn't work either. i then read on another website that in order to run a file the way i would like to, i put the file name in both the during and after installation boxes. i tried doing that and it didn't work either. can anyone please help me?
If I understood your question correctly you will need to specify what the iexpress must do at the post install command option provided so that cmd.exe is used instead of command.com, eg:
cmd.exe /c filethatyouwanttorun.bat
Refer to the question: Create Batch file for iexpress.
You can use the SED file and then modify the self extraction directive. This will run the batch file that you wanted to run and then install the application. (If you have chosen the option to extract and run an installation in iexpress, a temp folder will be used for the extraction I suppose.)
I'm not sure I understand your question exactly but perhaps a few points would help:
If you want a "do nothing" command, you can use something like:
cmd /c echo.
There is no "command during the extraction". There's only an install program and a post install command. Both of these execute after extraction. If you only need to execute one batch file, put it in the install program line and leave the post install command blank.
You can't ask the user for an extraction path and execute a file. You can only do one or the other. (The install program could prompt the user and copy the files there, though.)