205 lines
5.5 KiB
Markdown
205 lines
5.5 KiB
Markdown
# Tmux yank screencast script
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1 - Intro - what's the plugin about
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===================================
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Actions
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-------
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- none, just clear screen
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Script
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------
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In this screencast we'll demo a tmux yank plugin.
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This plugin enables you to copy some text from tmux to the system clipboard,
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along with some extra functionality we'll show.
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It was made to complement tmux copycat plugin which we'll also be using for
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selection in this screencast.
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2 - problems with vanilla tmux and `y`
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==============================
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Actions
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-------
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- $ echo 'example url https://github.com/tmux-plugins/tmux-yank'
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- highlight url
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- enter
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- paste url
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- remove url
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- highlight url again
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- 'y'
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- paste with cmd + v
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Script
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------
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Let's show a problem scenario you might be having with tmux.
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I'll generate some example output with a url in the terminal.
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Okay, now I want to copy that url and open it in the browser.
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By using tmux copycat saved search I'll quickly select the url.
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I'll press enter, a "bajnding" for copy.
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I can now paste it in tmux by pressing prefix + right angle bracket.
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That works, but there's a problem. Tmux paste works only within tmux. Pressing
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prefix + right angle bracket won't work in the browser where I actually want the
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above url to be.
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Ideally, when I copy some text in tmux, I want it to be available for paste
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anywhere on the system with control-v or command-v if I'm on a Mac.
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Enter tmux-yank which enables just that.
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I'll select the url again.
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Tmux-yank provides a convenient "bajnding" so that pressing 'y' in copy mode
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copies the text and makes it available in system clipboard.
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I'm on a mac so I'll press command-v and there you have you have it.
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It goes without saying that this paste will work in the browser.
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Personally, I use tmux-yank copying all the time so I don't have to think in
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terms of being in tmux versus working with the rest of the system.
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And also, this way I can avoid tmux default paste binding 'prefix + right angle
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bracket' because it is a bit clunky and unintuitive.
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3 - showing 'ctrl-y'
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====================
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Actions
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-------
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- git status -sb (file1.txt, file2.txt, file3.txt)
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- git add
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- highlight last file
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- y
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- paste and enter to git add a file
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- clear screen
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- git status -sb
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- git add
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- highlight last file
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- ctrl-y and git add a file
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- cmd - v
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Script
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------
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Let's show another feature.
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I'll invoke git status command for the project I'm in.
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Now I want to git add only the last file.
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I'll select the last file, yank and paste.
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Do you think we can optimize this?
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Often with tmux there's a need to copy a selection, and paste it to the command
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line immediately.
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Tmux-yank provides a so called 'put selection' command. Let's demo it.
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I'll highlight another git status file and press control-y.
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The selection is immediately 'put' to the command line. That's one step, instead
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of two.
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A nice side-effect of 'put selection' command is that it preserves the system
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clipboard content.
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If I press command-v now you'll see that the clipboard still contains the
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previous entry. 'put selection' command didn't overwrite it.
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4. show 'line yank'
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===================
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Actions
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-------
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- clear pane scrollback
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- split window
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- echo 'some command'
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- ctrl-p to show the last command
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- prefix + y
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- go the the pane on the right
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- cmd - v
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Script
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------
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The last tmux-yank feature I'd like to show is 'line yank'.
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It enables you to quickly copy the current command line to system clipoard.
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The nice thing is, it also works for commands that strech multiple lines.
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But here's the basic example. I'll write a simple command.
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Okay, that works. Now, I want to execute that same command in the pane on the
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right. I could of course type the command again, but that's tedious and I could
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make a typo.
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Another solution is mouse selection, but that's just slow and lame.
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I'll use the 'line yank' feature.
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I'll press prefix + 'y' and the command is copied. Notice there were no changes
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to the command itself - it is intact.
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In the second pane on the right I can paste the line with command - v.
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5. show 'line yank' with the production server
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==============================================
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Actions
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-------
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- left pane - local psql console
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- right pane - psql console on developsta
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- prepared create_table command on the left
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- execute the command, it's ok
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- show the command again
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- show that mouse selection is innefective
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- prefix + y
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- switch to right pane
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- paste
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- enter
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Script
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------
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One scenario where I find line yank feature really useful is when I have to
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execute a command on the production server.
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Here I have the local environment in the left pane, and I'm connected to
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the production server in the right pane.
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The task I want to perform is creating a database table on the
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production server.
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Frankly, I feel hesitatnt to type that command straight on production.
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I'd rather first try and debug it locally, and then execute it on production.
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Let's do that then. I'll open a database console locally and type the command.
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Oh, it looks like I have a typo. It's good I tried this locally first.
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Ok, the command works and is now ready. How do I now run in on production?
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Typing this again, with the possibility of making a typo is not an option.
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Let's try mouse selection.
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Hm, that won't work either. It seems I can't scope mouse
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selection to the left pane.
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Let's now try line yank with prefix + 'y'.
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Notice we're copying a multi-line command.
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I'll paste it in the right pane.
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That looks ok, so I'll execute it.. and it's good.
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6. Outro
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========
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Actions
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-------
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- just a blank screen
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Script
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------
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That's it for this screencast. I hope you'll find tmux-yank useful.
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