Updated SC2144 (markdown)

SC2144.md

@@ -30,6 +30,21 @@ done
 
 Instead, use a for loop to expand the glob and check each result individually.
 
+If you are looking for the existence of a directory, do:
+
+```sh
+for f in /path/to/your/files*; do
+
+    ## Check if the glob gets expanded to existing files.
+    ## If not, f here will be exactly the pattern above
+    ## and the exists test will evaluate to false.
+    [ -e "$f" ] && echo "files do exist" || echo "files do not exist"
+
+    ## This is all we needed to know, so we can break after the first iteration
+    break
+done
+```
+
 ### Exceptions
 
 None.
@@ -37,3 +52,4 @@ None.
 ### Related resources:
 
 * [BashFaq: How can I check whether a directory is empty or not? How do I check for any *.mpg files, or count how many there are?](https://mywiki.wooledge.org/BashFAQ/004)
+* [sh - Check if a file exists with wildcard in shell script - Stack Overflow](https://stackoverflow.com/a/6364244/2309247)