Add Touch Access And Modify Times Individually as a unix til

README.md

@@ -10,7 +10,7 @@ smart people at [Hashrocket](http://hashrocket.com/).
 For a steady stream of TILs from a variety of rocketeers, checkout
 [til.hashrocket.com](https://til.hashrocket.com/).
 
-_694 TILs and counting..._
+_695 TILs and counting..._
 
 ---
 
@@ -664,6 +664,7 @@ _694 TILs and counting..._
 - [SSH With Port Forwarding](unix/ssh-with-port-forwarding.md)
 - [Sort In Numerical Order](unix/sort-in-numerical-order.md)
 - [Switch Versions of a Brew Formula](unix/switch-versions-of-a-brew-formula.md)
+- [Touch Access And Modify Times Individually](unix/touch-access-and-modify-times-individually.md)
 - [Undo Some Command Line Editing](unix/undo-some-command-line-editing.md)
 - [View A Web Page In The Terminal](unix/view-a-web-page-in-the-terminal.md)
 - [Watch The Difference](unix/watch-the-difference.md)

unix/touch-access-and-modify-times-individually.md

@@ -0,0 +1,26 @@
+# Touch Access And Modify Times Individually
+
+When running the `touch` command on an existing file:
+
+```bash
+$ touch README.md
+```
+
+The `Access` and `Modify` times of that file will be updated to the current
+time.
+
+You can update these values individually with the `-a` and `-m` flags.
+
+To update just the access time:
+
+```bash
+$ touch -a README.md
+```
+
+To update just the modify time:
+
+```bash
+$ touch -m README.md
+```
+
+See `man touch` for more details.