diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ddb3bb1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,12 @@
+# LOGFILENAME artifacts: the framework (Logging.sh + PrettyPrint.sh) appends
+# every print_info/print_error line to LOGFILENAME, defined as
+# "$0.<Weekday>-YYYY-MM-DD-HH:MM:SS.$$". Running any script that sources the
+# framework therefore drops a timestamped log file next to it. Ignore these
+# everywhere in the repo.
+*.Monday-*
+*.Tuesday-*
+*.Wednesday-*
+*.Thursday-*
+*.Friday-*
+*.Saturday-*
+*.Sunday-*