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Add See Where asdf Gets Current Tool Version as a Unix TIL

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jbranchaud
2025-01-03 12:11:02 -06:00
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README.md
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@@ -10,7 +10,7 @@ pairing with smart people at Hashrocket.
For a steady stream of TILs, [sign up for my newsletter](https://crafty-builder-6996.ck.page/e169c61186).
_1555 TILs and counting..._
_1556 TILs and counting..._
See some of the other learning resources I work on:
- [Ruby Operator Lookup](https://www.visualmode.dev/ruby-operators)
@@ -1571,6 +1571,7 @@ See some of the other learning resources I work on:
- [Search History](unix/search-history.md)
- [Search Man Page Descriptions](unix/search-man-page-descriptions.md)
- [Securely Remove Files](unix/securely-remove-files.md)
- [See Where asdf Gets Current Tool Version](unix/see-where-asdf-gets-current-tool-version.md)
- [Set The asdf Package Version For A Single Shell](unix/set-the-asdf-package-version-for-a-single-shell.md)
- [Show A File Preview When Searching With FZF](unix/show-a-file-preview-when-searching-with-fzf.md)
- [Show Disk Usage For The Current Directory](unix/show-disk-usage-for-the-current-directory.md)

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unix/see-where-asdf-gets-current-tool-version.md Normal file
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# See Where asdf Gets Current Tool Version
The other day I [installed the latest version of
Ruby](ruby/install-latest-version-of-ruby-with-asdf.md) with `asdf`. I then set
that version (`3.4.1`) as the global default. However, when I then ran `ruby
--version`, I was getting a `3.2.x` version. I checked my current project's
directory and there was no `.tool-versions` file, so it wasn't being set by my
current directory.
`asdf` looks up the current chain of directories until it encounters a
`.tool-versions` file, so it must have been finding one somewhere up there, but
before it was getting to the _global_ `.tool-versions` file. But where?
The `asdf current` command can tell us for a specific tool what the current
version it is set to and what file is giving that directive.
```bash
asdf current ruby
ruby 3.2.2 /Users/jbranchaud/code/.tool-versions
```
As it turns out, I had a `.tool-versions` file in `$HOME/code` that was setting
that `3.2.x` Ruby version.
I didn't want that directory controlling the Ruby version, so I removed `ruby`
from that file. `asdf` was then able to traverse up to `$HOME/.tool-versions`
for the global setting.
See `asdf help` for more details.