Add Print Milliseconds In Human-Readable Format as a Unix TIL

README.md

@@ -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).
 
-_1331 TILs and counting..._
+_1332 TILs and counting..._
 
 ---
 
@@ -1317,6 +1317,7 @@ _1331 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 Milliseconds In Human-Readable Format](unix/print-milliseconds-in-human-readable-format.md)
 - [Print Out Files In Reverse](unix/print-out-files-in-reverse.md)
 - [Print The Current Date In Human-Readable Format](unix/print-the-current-date-in-human-readable-format.md)
 - [Provide A Fallback Value For Unset Parameter](unix/provide-a-fallback-value-for-unset-parameter.md)

unix/print-milliseconds-in-human-readable-format.md

@@ -0,0 +1,24 @@
+# Print Milliseconds In Human-Readable Format
+
+I ran a command in a program. It doesn't really matter what command or program.
+What does matter is that it took a long time and when it finished, it told me
+how long it took, but in milliseconds.
+
+```
+835953ms
+```
+
+Typically, when I see a timing number like this, I open Alfred and do some
+quick math (`N / 1000 / 60 / 60` or something like that).
+
+There is an easier way, using the
+[`pretty-ms-cli`](https://github.com/sindresorhus/pretty-ms-cli). This
+purpose-built CLI can be run using something like
+[`npx`](https://www.npmjs.com/package/npx). All I do is hand it the number of
+milliseconds and it prints out how long that is in something that I can
+understand.
+
+```bash
+❯ npx pretty-ms-cli 835953
+13m 56s
+```