fix

appveyor.yml

@@ -13,7 +13,8 @@ install:
   - mv sqlite-tools-win32-x86-3210000/sqlite3.exe .
   
 build_script:
-  - bash -c 'find . -name "*.cdb" -type f -print0 | xargs -0 -I {} bash -c \'n={}; mkdir -p "dumps/$n"; ./sqlite3 "$n" .dump > "dumps/$n.sql"\''
+  - cd %BUILD_PATH%
+  - find . -name "*.cdb" -type f -print0 | xargs -0 -I {} sh -c 'n={}; mkdir -p "dumps/$n"; ./sqlite3 "$n" .dump > "dumps/$n.sql"'
 
 after_build:
   - git checkout dump