shell auto example du k awk

#如果备份目录大小超过限制，删除部分日志
Sizeoflog=0
Sizeoflog=`du -k ${RealBaseLogBakPath} |grep -v "$RealBaseLogBakPath/" |awk '{printf "%s\n",$1}'`
if [ ${Sizeoflog} -gt ${MaxBakDirSize} ];then

 $mhome/bin/dellogdir ${BakThirdDirName} ${willrmdays}
                    Result=$?
                    if [ ${Result} -eq 1 ]
                    then
                        echo "删除${RealBaseLogBakPath}/${BakDirName}/${BakThirdDirName}\n\n" >> ${BakLogFileName}
                        rm -rf ${RealBaseLogBakPath}/${BakDirName}/${BakThirdDirName}
                    else
                        #如果相差的天数是在${willorigdays}与${willrmdays}之间的话，就压缩该目录，并删除原始日志
                        $mhome/bin/dellogdir ${BakThirdDirName} ${willorigdays}
                        Result=$?
                        if [ ${Result} -eq 1 ];then
                            echo "压缩并删除${RealBaseLogBakPath}/${BakDirName}/${BakThirdDirName}目录\n\n" >> ${BakLogFileName}
                            tar -cf - ${RealBaseLogBakPath}/${BakDirName}/${BakThirdDirName} | gzip > ${RealBaseLogBakPath}/${BakDirName}/${BakThirdDirName}.tar.gz
                            rm -rf ${RealBaseLogBakPath}/${BakDirName}/${BakThirdDirName}
                        fi
                    fi