So i have a C program that i made a while back that im going to remake in qt with additional features.
Typically how i ran the program is I open the terminal, navigate to the project folder, and use the command
$ sudo nice --10 ./myprogram
That is not the case anymore, since i am using qt-creator i now just simply click the 'run' button and the program starts. My program works best when it has elevated scheduler priority hence the nice --10.
How do i modify my qt-creator project to run my program with the sudo nice --10 command?
To do that go to
Tools-> Options-> Environment -> System Tab under the terminal option write "/usr/bin/xterm sudo nice --10"
Also if you have not done it already go to Projects -> Build & Run -> Run and check the box Run in terminal.
I never tried, but in the config of your project you can add a user defined executable to be executed.
Maybe creator allows for a shellscript, than you can simply put your sudo nice --10 in a shellscript, or you write a little program which gets a program path as parameter and starts it with the elevated scheduler priority (guess there is a user api in linux for that...)
Related
I am trying to use Run/Debug Configurations on WebStorm, however it doesn't seem to source .zshrc and produces errors about not finding commands and environment variables. (An example of this would be yarn tauri dev when using Tauri)
I have installed Ubuntu 20.04 in WSL and the project I opened in WebStorm resides under the $HOME directory. WebStorm is installed in Windows.
For the interactive shell, I have made zsh the default by chsh -s $(which zsh), but when using Run/Debug Configurations it uses the default non-interactive shell, which is dash as far as I know. And my environment variables and PATH are all set in .zshrc, which is not sourced by dash.
It seems in CLion, it is possible to execute commands in the login shell according to this YouTrack issue, but such an option is not available on WebStorm.
Is it possible to use zsh instead of dash as the default non-interactive shell? If not, it would help me a lot to know what is the best practice in such situations.
There are several questions and points you make:
First, from the question title (and the summary at the end):
Can I use zsh as the default non-interactive shell for WSL2 Ubuntu?
Well, maybe (using symlinks), but it would be a really bad idea. So many built-in scripts rely on /bin/sh pointing to Dash, or at least Bash. While Zsh might be compatible with 99.9% of them, eventually there's a strong likelihood that some difference in Zsh would cause a system-level script to fail (or at least produce results inconsistent with those from Dash).
It is possible in Ubuntu to change the default non-interactive ("system" shell) from Dash to Bash with sudo dpkg-reconfigure dash. If you select "No" in the resulting dialog, then the system will be updated to point /bin/sh to bash instead of dash.
But not to Zsh, no.
when using Run/Debug Configurations it uses the default non-interactive shell, which is dash as far as I know
I don't run WebStorm myself, so I'm not sure on this exactly. Maybe #lena's answer (or another) will cover it for you, but if it doesn't, I'm noticing this doc page. It might be worth trying to specify Zsh in those settings, but again, I can't be sure.
And my environment variables and PATH are all set in .zshrc, which is not sourced by dash.
Hmm. I'm guessing you would need these set in a .profile/.zprofile equivalent regardless. I would assume that WebStorm is executing the shell as a non-interactive one, which means that it wouldn't even parse ~/.bashrc if Bash was your default shell.
... it would help me a lot to know what is the best practice in such situations.
Best practice is probably to make sure that your ~/.profile has any environment changes needed. Yes, this violates DRY (don't repeat yourself), but it's probably the best route.
Thanks to the answer here and the discussion below, I was able to figure it out. (Thank you, #NotTheDr01ds and #lena.)
The main problem is that WebStorm is installed on Windows and therefore knows only the environment variables in Windows. There are two ways to solve the problem as follows.
Sharing WSL's environment variable to Windows through WSLENV
Add the line below to .zshrc so that it sets $WSLENV when zsh starts.
export WSLENV=VAR_I_WANT_TO_SHARE:$WSLENV
# Don't forget to insert the colon
# And for some reason, appending the variable after $WSLENV didn't work well
In Windows, run
wsl -e zsh -lic powershell.exe
This runs WSL using zsh (logged-in and interactive), then runs powershell which brings you back to Windows. Although this doesn't seem to achieve anything, by going through zsh in WSL, .zshrc was sourced and therefore $WSLENV set as well. You can check if it worked well by running the below command after you've run the above.
$env:VAR_I_WANT_TO_SHARE
Run WebStorm from the PowerShell that was just created.
& 'C:\Program Files (x86)\JetBrains\WebStorm 2022.1.3\bin\webstorm64.exe'
When you run or debug any of the Run/Debug Configurations, you will see that the environment variable is shared successfully.
Setting the PATH in Windows
For most environment variables, the previous method works well. However, PATH is an exception. The Windows PATH is shared to WSL by default. The opposite doesn't work, probably because the PATH in WSL should not interfere with Windows.I've tried adding the $PATH of WSL into $WSLENV but it didn't seem to work.
In the end, what I did was manually adding each needed $PATH of WSL into the Windows PATH.
For example, if there was export PATH=$PATH:home/(username)/.cargo/bin in .zshrc, you can then add \\wsl$\Ubuntu\home\(username)\.cargo\bin to the Windows $env:Path using the Environment Variable window.
I might have made some mistakes, so feel free to leave an edit or comments.
You can try using npm config set script-shell command to set the shell for your scripts. Like npm config set script-shell "/usr/bin/zsh".
When npm run <script name> spawns a child process, the SHELL being used depends on NPM environment. Cм https://docs.npmjs.com/cli/run-script:
The actual shell your script is run within is platform dependent. By
default, on Unix-like systems it is the /bin/sh command, on Windows it
is the cmd.exe. The actual shell referred to by /bin/sh also depends
on the system. As of npm#5.1.0 you can customize the shell with the
script-shell configuration
See also https://github.com/npm/npm-lifecycle/blob/10c0c08fc25fea3c18c7c030d4618a401963355a/index.js#L293-L304
In Atom text editor, after saving a file, I'd like to have a hotkey like ctrl-alt-b that will run "npm build" and display the results in an embedded terminal.
I'm also hoping that after seeing the terminal output, I'd be able to click anywhere outside that embedded terminal to make it go away, (instead of having to mouse-travel to some small exit button and click it).
It may be relevant to mention that my OS is Ubuntu 16.04.5.
I did find a really nice tool called the atom build package, but it seems to take over the whole build process, which is something I've already got setup via "npm build".
Setting up a hotkey is the trivial part, but you need some package that provides the actual build command. You can add something like the following to your Atom keymap:
'atom-workspace atom-text-editor:not([mini])':
'ctrl-alt-b': 'package-name:command-name'
Other than that, I recommend using a general purpose package like process-palette. It lets you define a command (or a chain of commands) and run it in your project directory at the press of a custom hotkey.
On Windows, default terminal for Atom's Platformio-Ide-Terminal is Powershell (at least, that is what I get without any configuration).
I would prefer a terminal using unix-type commands. I already have MINGW and CYGWIN installed.
How can I avoid opening a Powershell and opening another terminal type instead?
Set the default shell in:
Edit>>Settings>>Packages>>Platformio Ide Terminal>>Settings>>Shell Override
You can use the git's bash as proposed here as you probably already have git installed.
C:\Program Files\Git\bin\bash.exe
Step by Step Solution
Go the Setting-> Packages -> In Search Bar, search for the platformio.
Open platformio and go to Shell Override Option.
Put the following line as per as your Terminal Requirement
For cmd- C:\\WINDOWS\\System32\\cmd.exe
For Power Shell- C:\\WINDOWS\\Sysnative\\WndowsPowerShell\\v1.0\\powershell.exe
For bash- C:\\Program Files\\Git\\bin\\bash.exe or C:\\Windows\\System32\\bash.exe (depending on how you install the bash). Be Sure, that you have already install the bash into your computer.
Now, you can integrate bash, cmd, git bash, Power Shell into Atom using platformio as terminal.
For CYGWIN users, the bash executable from the following location has proved useful for setting the shell override Settings >> Packages >> Platformio Ide Terminal >> Settings >> Shell Override
C:\cygwin64\bin\bash.exe
If you are now using Ubuntu for Windows 10 (downloaded from the app store), you can change it to that as well.
Ubuntu gets installed in Windows' PATH by default, so just change the default shell to:
ubuntu.exe
That's it. Just remember that to get to your code, cd to /mnt/(driveletter)/wherever/your/files/sit.
For someone who still can't get this to work because your git bash is installed in AppData. This worked for me.
C:\Users\saurabh\AppData\Local\Programs\Git\bin\bash.exe
I am trying to install the pyperclip module for Python 3.6 on Windows (32 bit). I have looked at various documentations (Python documentation, pypi.python.org and online courses) and they all said the same thing.
1) Install and update pip
I downloaded get-pip.py from python.org and it ran immediately, so pip should be updated.
2) Use the command python -m pip install SomePackage
Okay here is where I'm having issues. Everywhere says to run this in the command line, or doesn't specify a place to run it.
I ran this in the command prompt: python -m pip install pyperclip. But I got the error message "'python' is not recognized as an internal or external command, operable program or batch file.
If I run it in Python 3.6, it says pip is an invalid syntax. Running it in IDLE gives me the same message.
I have no idea where else to run it. I have the pyperclip module in my python folder. It looks like a really simple problem, but I have been stuck on this for ages!
You need to add the location of the python.exe to your $PATH variable. This depends on your installation location. In my case it is C:\Anaconda3. The default is C:\Python as far as I know.
To edit your path variable you can do the following thing. Go to your Control Panel then search for system. You should see something like: "Edit the system environment variables". Click on this and then click on environment variables in the panel that opened. There you have a list of system variables. You should now look for the Path variable. Now click edit and add the Python path at the end. Make sure that you added a semicolon before adding the path to not mess with your previous configuration.
I'm trying to wrap my head around this: on Windows, I use cmder (a wrapper around ConEmu) which improves on the bare cmd.exe experience (a lot) but can also host other shells like PowerShell or Git Bash. I'd like to go more "unix-y" but still well integrated with my Windows tools. Git Bash strikes the right balance for me: I can do things like rm -rf node_modules but still run my Windows commands fine.
It's easy to get Git Bash going inside cmder, however, I'd like to replace the shell with zhs, mainly to get the super-useful "up arrow respects the current prefix" feature (I write git, press the up arrow and only get suggestions on the recent Git commands).
The question is, who will handle the up arrow? Will it be ConEmu and do Windows-y stuff (cycling through all the commands) or will it fall down to zsh and the cycling will be implemented by it? How does this work?
Related: ConEmu: possible to change the up arrow behavior?
ConEmu's disclaimer states
ConEmu is not a shell, so it does not provide "shell features" like remote access, tab-completion, command history and others.
Only the shell itself knows when user types a command and only the shell may store executed commands history. Of course, only the shell may process Up/Down/Tab keys to "browse" stored history of commands.
cmder is a bundle of tools including clink, which integrates into cmd.exe and process cmd's prompt internally. So, in cmder by default Up/Down/Tab arrows are processed by clink.
More info is here: http://conemu.github.io/en/TabCompletion.html