!/bin/bash

Author:ztj

Date:2023/5/6

Description:磁盘使用率大于90%报警

NULLFILE=65

disk_filesystem=/tmp/filesystem.txt

$disk_filesystem
df -h |grep -v "Filesystem" |grep -E "^/dev" >$disk_filesystem

if [ ! -s $disk_filesystem ];then
echo "$disk_filesystem is empty,please check it!"
exit $NULLFILE
else
while read line
do
if [ -n "$line" ];then
name_disk=$(echo $line | awk '{print $1}')

echo $name_disk

used_disk=$(echo $line | awk '{print $5}' | tr -d %)

echo $used_disk

if [ $used_disk -gt 90 ];then
 echo "WARNING:the usage of $name_disk is above 90%."
fi

else
exit 0
fi
done <$disk_filesystem
fi