ubuntu 编译单个包bash脚本

#!/bin/bash
if [ -n "$1" ]
then
echo ":: fetching necessary packages for build"
apt-get build-dep "$@"
echo ":: fetching source"
apt-get source "$@"
fi
ourflags=$CFLAGS
echo :: using $ourflags
for directory in `ls -Al | awk '/^d/ {print $8}'`;
do
echo :: entering directory $directory ...
cd $directory
sed -e 's/-O2/'"${ourflags}"'/g' -i `ls -Al | awk '/^-/ {print $8}'`
cd debian
sed -e 's/-O2/'"${ourflags}"'/g' -i `ls -Al | awk '/^-/ {print $8}'`
cd .. dpkg-buildpackage -rfakeroot -uc -b
echo :: leaving directory $directory ...
cd ..
done