Tuesday, 11 April 2023

Getting Windows Terminal to open my Ubuntu Bash session in the right directory

G'day:

This is a follow on from the previous two articles:

All that is working well, but I had a wee problem with switching my Windows Terminal config from starting Git Bash shells to do the equivalent with directly running a Bash shell on my WSL Ubuntu filesystem.

For Git Bash, I have profiles set up like this:

{
    "commandline": "C:\\apps\\Git\\git-bash.exe",
    "guid": "{be9a184b-1c89-4ac5-88da-3ef93cd5ec98}",
    "hidden": false,
    "icon": "C:\\apps\\Git\\mingw64\\share\\git\\git-for-windows.ico",
    "name": "Git Bash (SymfonyFastTrack)",
    "startingDirectory": "\\\\wsl$\\Ubuntu\\home\\adam\\src\SymfonyFastTrack",
    "tabTitle": "Git Bash (SymfonyFastTrack)"
}

And when I open a terminal with that profile I get:

adam@DESKTOP MINGW64 //wsl$/ubuntu/home/adam/src/SymfonyFastTrack (main)
$

I figured it would be easy with an Ubuntu one, I'd copy the default one:

{
    "guid": "{2c4de342-38b7-51cf-b940-2309a097f518}",
    "hidden": false,
    "name": "Ubuntu",
    "source": "Windows.Terminal.Wsl"
}

Change its GUID, give it a different name and a startingDirectory value and done. But no: one cannot have more than one profile for Windows.Terminal.Wsl it would seem: It didn't show up (it also didn't error, which Windows Terminal is pretty good at when it doesn't like something).

So now I have two issues: getting a second Ubuntu Bash shell profile working at all, and then: point it to the correct starting directory.

The first thing I found out is that in the current version of Windows Terminal, the startingDirectory is not honoured for Ubuntu anyhow. So that's a non-starter. I did a lot of googling, and that turned up nothing. Then I turned to a more powerful search engine: I Mingo-ed it. He didn't quite nail the solution, but he got me onto the right track: asking ChatGPT. I dunno why I didn't start there. After a bit of back and forth, ChatGPT and I came up with this:

{
    "commandline": "wsl.exe -d Ubuntu /bin/bash --rcfile <(echo \"source ~/.bashrc; cd ~/src/SymfonyFastTrack\")",
    "guid": "{3933fa46-657f-4db9-ad6a-2bee51554bc5}",
    "icon": "C:\\Users\\camer\\AppData\\Local\\wt\\bash.png",
    "name": "Bash (SymfonyFastTrack)",
    "tabTitle": "Bash (SymfonyFastTrack)"
}

Explanation:

  • wsl.exe -d Ubuntu is the long form of what I tried before with source:Windows.Terminal.Wsl; name: Ubuntu.
  • /bin/bash says to run Bash.
  • --rcfile says "using this RC file (eg: instead of .bashrc.
  • <(echo [etc]): instead of using an actual file, take it from stdout.
  • source ~/.bashrc: first my actual .bashrc.
  • cd ~/src/SymfonyFastTrack\: but then switch to this directory.

And when I use this profile, I get what I want:

adam@DESKTOP //wsl$/ubuntu/home/adam/src/SymfonyFastTrack (main) $

Cool. All done.

This was another article which is largely me fumbling around being a n00b, but we all start that way with things I guess, so maybe this will short-circuit all the goolging, mingoing and ChatGPTing I had to do to arrive at the solution.

And - seriously Mingo - cheers for helping with this.

Righto.

--
Adam

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