diff --git a/build.sh b/build.sh
index 8b9d5a6f..54e83101 100755
--- a/build.sh
+++ b/build.sh
@@ -23,41 +23,41 @@ echo ${system}
 
 cd ./build/linux/HGBase
 cbp2make -targets ${system}_${arch}_Release -in HGBase.cbp -out makefile
-make
-sudo mv ../../../../release/${system}/${arch}/HGBase.so ../../../../release/${system}/${arch}/libHGBase.so
-sudo rm -rf ./bin
-sudo rm -rf ./obj
-sudo rm -f makefile
+make -j6
+mv ../../../../release/${system}/${arch}/HGBase.so ../../../../release/${system}/${arch}/libHGBase.so
+rm -rf ./bin
+rm -rf ./obj
+rm -f makefile
 
 cd ../HGImgFmt
 cbp2make -targets ${system}_${arch}_Release -in HGImgFmt.cbp -out makefile
-make
-sudo mv ../../../../release/${system}/${arch}/HGImgFmt.so ../../../../release/${system}/${arch}/libHGImgFmt.so
-sudo rm -rf ./bin
-sudo rm -rf ./obj
-sudo rm -f makefile
+make -j6
+mv ../../../../release/${system}/${arch}/HGImgFmt.so ../../../../release/${system}/${arch}/libHGImgFmt.so
+rm -rf ./bin
+rm -rf ./obj
+rm -f makefile
 
 cd ../HGImgProc
 cbp2make -targets ${system}_${arch}_Release -in HGImgProc.cbp -out makefile
-make
-sudo mv ../../../../release/${system}/${arch}/HGImgProc.so ../../../../release/${system}/${arch}/libHGImgProc.so
-sudo rm -rf ./bin
-sudo rm -rf ./obj
-sudo rm -f makefile
+make -j6
+mv ../../../../release/${system}/${arch}/HGImgProc.so ../../../../release/${system}/${arch}/libHGImgProc.so
+rm -rf ./bin
+rm -rf ./obj
+rm -f makefile
 
 cd ../HGWebService
 cbp2make -targets ${system}_${arch}_Release -in HGWebService.cbp -out makefile
-make
-sudo rm -rf ./bin
-sudo rm -rf ./obj
-sudo rm -f makefile
+make -j6
+rm -rf ./bin
+rm -rf ./obj
+rm -f makefile
 
 cd ../../../build-qt/HGSolution
 qmake -makefile HGScanner.pro
-make
-sudo rm -f *.o
-sudo rm -f *.h
-sudo rm -f *.cpp
-sudo rm -f .qmake.stash
-sudo rm -f Makefile
+make -j6
+rm -f *.o
+rm -f *.h
+rm -f *.cpp
+rm -f .qmake.stash
+rm -f Makefile