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I recently setup some vm’s on my main machine and got sick of signing in with passwords.

ssh-keygen
ssh-copy-id -i ~/.ssh/id_rsa.pub virt

Moving panes between tmux sessions is something that makes tmux a very flexible and powerful tool. I don’t need this feature very often, but it comes in clutch when you need it.

Pull a pane from any other session #

Using choose-window I was able to come up with a way to select any pane withing any other session and join it into my current session.

# Choose a pane to join in horizontally
bind f choose-window -Z 'join-pane -h -s "%%"'

Push/Pull from scratch #

I’ve long had this one in my tmux config, I always have a “scratch” session that I’m running, I often use for looking at things like k9s accross repos within a popup.

This use case puts a pane into the scratch session, then pulls it back out. I will use this to move a pane between sessions in the rare cases I need to do this.

# push the active pane into the scratch session horizonally
bind -n M-f join-pane -ht scratch
# pull the last active pane from the scratch session horizonally into this session
bind -n M-F join-pane -hs scratch

I just shared some ssh keys with myself and ran into this error telling me that I did not set the correct permissions on my key.

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@         WARNING: UNPROTECTED PRIVATE KEY FILE!          @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
Permissions 0750 for '/home/waylon/.ssh/id_*******' are too open.
It is required that your private key files are NOT accessible by others.
This private key will be ignored.
Load key "/home/waylon/.ssh/id_*******": bad Permissions
repo: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

I changed them with the following commands.

chmod 644 ~/.ssh/id_*******.pub
chmod 600 ~/.ssh/id_*******

With the latest release of version of nvim 0.8.0 we get access to a new winbar feature. One thing I have long wanted somewhere in my nvim is navigation for pairing partners or anyone watching can keep track of where I am. As the driver it’s easy to keep track of the file/function you are in. But when you make big jumps in a few keystrokes it can be quite disorienting to anyone watching, and having this feedback to look at is very helpful.

winbar #

nvim exposes the winbar api in lua, and you can send any text to the winbar as follows.

vim.o.winbar = "here"

You can try it for yourself right from the nvim command line.

:lua vim.o.winbar = "here"

Now you will notice one line above your file with the word here at the very beginning.

Clearing the winbar #

If you want to clear it out, you can just set it to an empty string or nil.

:lua vim.o.winbar = ""
:lua vim.o.winbar = nil

Setting up nvim-navic #

You will need to install nvim-navic if you want to use it. I added it to my plugins using Plug as follows.

call plug#begin('~/.local/share/nvim/plugged')
Plug 'SmiteshP/nvim-navic'
call plug#end()

Note! nvim-navic does require the use of the nvim lsp, so if you are not using it then maybe this won’t work for you.

I created an on_attach function long ago, cause that’s what Teej told me to do. Now I am glad I did, because it made this change super easy.

local function on_attach(client, bufnr)
    if client.server_capabilities.documentSymbolProvider then
        navic.attach(client, bufnr)
    end
end

Then you need to use that on_attach function on all of the lsp’s that you want navic to work on.

Then in a lua file you need to setup the winbar, for now I put this in my lsp-config settings file, but eventually I want to move my settings to lua and put it there.

vim.o.winbar = " %{%v:lua.vim.fn.expand('%F')%}  %{%v:lua.require'nvim-navic'.get_location()%}"

What my winbar looks like #

What I have right now is everything someone who is watching would need to know to navigate to the same place that I am in the project.

 waylonwalker/app.py   Link >  on_click

Diff #

Here are the changes that I made to to my plugins list and my lsp-config to get it.

 /home/u_walkews/.config/nvim/plugins.vim
call plug#begin('~/.local/share/nvim/plugged')
+Plug 'SmiteshP/nvim-navic'

#  /home/u_walkews/.config/nvim/lua/waylonwalker/lsp-config.lua
-local function on_attach() end
+local navic = require("nvim-navic")
+local function on_attach(client, bufnr)
+    if client.server_capabilities.documentSymbolProvider then
+        navic.attach(client, bufnr)
+    end
+end
+
+vim.o.winbar = " %{%v:lua.vim.fn.expand('%F')%}  %{%v:lua.require'nvim-navic'.get_location()%}"

GH commit #

If you want to see the change on GitHub, here is the diff