Adde snippits

Linux/Lag_Selectord.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+# Purpose: Demonstrate usage of select and case with toggleable flags to indicate choices
+# 2013-05-10 - Dennis Williamson
+
+choice () {
+    local choice=$1
+    if [[ ${opts[choice]} ]] # toggle
+    then
+        opts[choice]=
+    else
+        opts[choice]=+
+    fi
+}
+
+PS3='Please enter your choice: '
+while :
+do
+    clear
+    options=("Option 1 ${opts[1]}" "Option 2 ${opts[2]}" "Option 3 ${opts[3]}" "Done")
+    select opt in "${options[@]}"
+    do
+        case $opt in
+            "Option 1 ${opts[1]}")
+                choice 1
+                break
+                ;;
+            "Option 2 ${opts[2]}")
+                choice 2
+                break
+                ;;
+            "Option 3 ${opts[3]}")
+                choice 3
+                break
+                ;;
+            "Option 4 ${opts[4]}")
+                choice 4
+                break
+                ;;
+            "Done")
+                break 2
+                ;;
+            *) printf '%s\n' 'invalid option';;
+        esac
+    done
+done
+
+printf '%s\n' 'Options chosen:'
+for opt in "${!opts[@]}"
+do
+    if [[ ${opts[opt]} ]]
+    then
+        printf '%s\n' "Option $opt"
+    fi
+done