diff --git a/2020/2020-02-15_gnuLinuxCourse/slides/intro.md b/2020/2020-02-15_gnuLinuxCourse/slides/intro_first.md
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rename from 2020/2020-02-15_gnuLinuxCourse/slides/intro.md
rename to 2020/2020-02-15_gnuLinuxCourse/slides/intro_first.md