Add Print Out Files In Reverse as a unix til

Author: jbranchaud

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
 For a steady stream of TILs, [sign up for my newsletter](https://tinyletter.com/jbranchaud).
 
-_891 TILs and counting..._
+_892 TILs and counting..._
 
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@@ -828,6 +828,7 @@ _891 TILs and counting..._
 - [Partial String Matching In Bash Scripts](unix/partial-string-matching-in-bash-scripts.md)
 - [PID Of The Current Shell](unix/pid-of-the-current-shell.md)
 - [Print A Range Of Lines For A File With Bat](unix/print-a-range-of-lines-for-a-file-with-bat.md)
+- [Print Out Files In Reverse](unix/print-out-files-in-reverse.md)
 - [Repeat Yourself](unix/repeat-yourself.md)
 - [Saying Yes](unix/saying-yes.md)
 - [Search Files Specific To A Language](unix/search-files-specific-to-a-language.md)

unix/print-out-files-in-reverse.md

@@ -0,0 +1,19 @@
+# Print Out Files In Reverse
+
+If you're familiar with `cat` -- the command you might use to print out a file
+in the terminal -- then you may appreciate a similar command: `tac`.
+
+With `tac` you can
+
+> Write each FILE to standard output, last line first.
+
+Notice that `tac` is `cat` spelled in reverse. That's what it does with your
+files, prints them out in reverse.
+
+Give it a try just as you'd use `cat`:
+
+```bash
+$ tac README.md
+```
+
+See `man tac` for more details.