Initial data commit

Task/Conditional-structures/Batch-File/conditional-structures-1.bat

@@ -0,0 +1,14 @@
+IF [NOT] ERRORLEVEL number          command
+IF [NOT] string1==string2           command
+IF [NOT] EXIST filename             command
+IF CMDEXTVERSION number             command
+IF DEFINED variable                 command
+IF [/I] string1 compare-op string2  command
+   where compare-op is:
+   EQU - equal
+   NEQ - not equal
+   LSS - less than
+   LEQ - less than or equal
+   GTR - greater than
+   GEQ - greater than or equal
+   /I    case insensitive string compares

Task/Conditional-structures/Batch-File/conditional-structures-2.bat

@@ -0,0 +1,5 @@
+IF EXIST %filename% (
+  del %filename%
+) ELSE (
+  echo %filename% not found
+)