Add Last Commit A File Appeared In as a git til.

README.md

@@ -32,6 +32,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 - [Delete All Untracked Files](git/delete-all-untracked-files.md)
 - [Dry Runs in Git](git/dry-runs-in-git.md)
 - [Intent To Add](git/intent-to-add.md)
+- [Last Commit A File Appeared In](git/last-commit-a-file-appeared-in.md)
 - [List Filenames Without The Diffs](git/list-filenames-without-the-diffs.md)
 - [List Untracked Files](git/list-untracked-files.md)
 - [Single Key Presses in Interactive Mode](git/single-key-presses-in-interactive-mode.md)

git/last-commit-a-file-appeared-in.md

@@ -0,0 +1,27 @@
+# Last Commit A File Appeared In
+
+In my project, I have a `README.md` file that I haven't modified in a while.
+I'd like to take a look at the last commit that modified it. The `git log`
+command can be used here with few arguments to narrow it down.
+
+```
+$ git log -1 -- README.md
+commit 6da76838549a43aa578604f8d0eee7f6dbf44168
+Author: jbranchaud <jbranchaud@gmail.com>
+Date:   Sun May 17 12:08:02 2015 -0500
+
+    Add some documentation on configuring basic auth.
+```
+
+This same command will even work for files that have been deleted if you
+know the path and name of the file in question. For instance, I used to have
+an `ideas.md` file and I'd like to find the commit that removed it.
+
+```
+$ git log -1 -- docs/ideas.md
+commit 0bb1d80ea8123dd12c305394e61ae27bdb706434
+Author: jbranchaud <jbranchaud@gmail.com>
+Date:   Sat May 16 14:53:57 2015 -0500
+
+    Remove the ideas doc, it isn't needed anymore.
+```