diff --git a/.DS_Store b/.DS_Store
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diff --git a/Lab 1 - Group Work/.DS_Store b/Lab 1 - Group Work/.DS_Store
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diff --git a/Lab 1 - Group Work/lab1_files/.DS_Store b/Lab 1 - Group Work/lab1_files/.DS_Store
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diff --git a/Lab 1 - Group Work/lab1_files/autograde/.DS_Store b/Lab 1 - Group Work/lab1_files/autograde/.DS_Store
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diff --git a/Lab 1 - Group Work/lab1_files/file_renaming/.DS_Store b/Lab 1 - Group Work/lab1_files/file_renaming/.DS_Store
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diff --git a/Lab 1/.DS_Store b/Lab 1/.DS_Store
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diff --git a/Rename_2_Days.sh b/Rename_2_Days.sh
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--- /dev/null
+++ b/Rename_2_Days.sh
@@ -0,0 +1,6 @@
+
+mkdir -p courses/dcs109 courses/dcs211
+echo "Late work accepted up to 3 days." > courses/dcs109/syllabus.txt
+echo "Late work accepted up to 3 days." > courses/dcs211/syllabus.txt
+
+sed -i.bak 's/3 days/2 days/g' courses/*/syllabus.txt
\ No newline at end of file
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diff --git a/myfile b/myfile
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