文件大于100K自动报警

#!/bin/bash
for i in {1..1000};do
echo "同窗们好" >> passwd
du -h passwd | awk -F'k' '{print $1}' | awk -F'.' '{print $1}'
sizeme=`du -h passwd | awk -F'k' '{print $1}' | awk -F'.' '{print $1}'`
if test $sizeme -gt 100;then
echo "文件超过100k"
break
fi
done