diff --git a/02-filedir.md b/02-filedir.md
index 151393f82..2841c61f5 100644
--- a/02-filedir.md
+++ b/02-filedir.md
@@ -91,7 +91,7 @@ which will be constructed in a similar way, but not be exactly identical.
 
 On Nelle's computer, the filesystem looks like this:
 
-![](fig/filesystem.svg){alt='The file system is made up of a root directory that contains sub-directoriestitled bin, data, users, and tmp'}
+![](fig/filesystem.svg){alt='The file system is made up of a root directory that contains sub-directories titled bin, data, users, and tmp'}
 
 The filesystem looks like an upside down tree. 
 The topmost directory  is the **root directory**
@@ -128,7 +128,7 @@ Underneath `/Users`,
 we find one directory for each user with an account on Nelle's machine,
 her colleagues *imhotep* and *larry*.
 
-![](fig/home-directories.svg){alt='Like other directories, home directories are sub-directories underneath"/Users" like "/Users/imhotep", "/Users/larry" or"/Users/nelle"'}
+![](fig/home-directories.svg){alt='Like other directories, home directories are sub-directories underneath "/Users" like "/Users/imhotep", "/Users/larry" or"/Users/nelle"'}
 
 The user *imhotep*'s files are stored in `/Users/imhotep`,
 user *larry*'s in `/Users/larry`,
@@ -710,7 +710,7 @@ what will `ls -F ../backup` display?
 3. `2012-12-01/ 2013-01-08/ 2013-01-27/`
 4. `original/ pnas_final/ pnas_sub/`
 
-![](fig/filesystem-challenge.svg){alt='A directory tree below the Users directory where "/Users" contains thedirectories "backup" and "thing"; "/Users/backup" contains "original","pnas\_final" and "pnas\_sub"; "/Users/thing" contains "backup"; and"/Users/thing/backup" contains "2012-12-01", "2013-01-08" and"2013-01-27"'}
+![](fig/filesystem-challenge.svg){alt='A directory tree below the Users directory where "/Users" contains the directories "backup" and "thing"; "/Users/backup" contains "original","pnas\_final" and "pnas\_sub"; "/Users/thing" contains "backup"; and"/Users/thing/backup" contains "2012-12-01", "2013-01-08" and"2013-01-27"'}
 
 :::::::::::::::  solution
 
@@ -741,7 +741,7 @@ what command(s) will result in the following output:
 pnas_sub/ pnas_final/ original/
 ```
 
-![](fig/filesystem-challenge.svg){alt='A directory tree below the Users directory where "/Users" contains thedirectories "backup" and "thing"; "/Users/backup" contains "original","pnas\_final" and "pnas\_sub"; "/Users/thing" contains "backup"; and"/Users/thing/backup" contains "2012-12-01", "2013-01-08" and"2013-01-27"'}
+![](fig/filesystem-challenge.svg){alt='A directory tree below the Users directory where "/Users" contains the directories "backup" and "thing"; "/Users/backup" contains "original","pnas\_final" and "pnas\_sub"; "/Users/thing" contains "backup"; and"/Users/thing/backup" contains "2012-12-01", "2013-01-08" and"2013-01-27"'}
 
 1. `ls pwd`
 2. `ls -r -F`
diff --git a/md5sum.txt b/md5sum.txt
index b59844254..fd18a1805 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -4,7 +4,7 @@
 "config.yaml" "7e947da357206469f1a2c8a159290d19" "site/built/config.yaml" "2023-05-02"
 "index.md" "b40a8b40c0ac29c17dd1ee7f402b62e4" "site/built/index.md" "2023-05-02"
 "episodes/01-intro.md" "f9424965b4e7855f0e569be741c5e88e" "site/built/01-intro.md" "2023-06-09"
-"episodes/02-filedir.md" "84f20e8590a441757d680a2227966491" "site/built/02-filedir.md" "2023-08-14"
+"episodes/02-filedir.md" "af35a5d4f423a4f46427978eea1b5ba5" "site/built/02-filedir.md" "2024-01-08"
 "episodes/03-create.md" "3e03cf7174ebce6b5574e3d7abce8c00" "site/built/03-create.md" "2023-07-31"
 "episodes/04-pipefilter.md" "8f1f5df56fb9ed60db6f33a9793664d5" "site/built/04-pipefilter.md" "2023-07-19"
 "episodes/05-loop.md" "fd0d4a3a3795930cc2e156b6e2b25a04" "site/built/05-loop.md" "2023-11-10"