basics: sh-programming: add "case" example

A simple example demonstrating the syntax of "case".

Signed-off-by: John Ogness <john.ogness@linutronix.de>

1 files changed, 25 insertions, 0 deletions

diff --git a/linux-basics/sh-programming/pres_sh-programming_de.tex b/linux-basics/sh-programming/pres_sh-programming_de.tex
index c7d4849..37fbafb 100644
--- a/linux-basics/sh-programming/pres_sh-programming_de.tex
+++ b/linux-basics/sh-programming/pres_sh-programming_de.tex
@@ -134,6 +134,31 @@ exit 0
 \begin{lstlisting}
 #!/bin/sh
 
+VAR=abcdef
+
+case $VAR in
+abc)
+    echo "exactly abc"
+    ;;
+abcdef)
+    echo "exactly abcdef"
+    ;;
+abc*)
+    echo "begins with abc"
+    ;;
+*)
+    echo "match everything"
+    ;;
+esac
+
+\end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]
+\frametitle{Bedingte Verzweigungen}
+\begin{lstlisting}
+#!/bin/sh
+
 # Short circuit tests:
 
 make && make install