比较两个文件是否大于值

比较两个文件是否大于值

我有一个请求,每 30 分钟提醒一次磁盘使用情况,问题是最近的输出应该检查旧的警报,以避免一次又一次发送相同的警报。

#!/bin/bash

#export [email protected]
export [email protected];
#df -PH | grep -vE '^Filesystem|none|cdrom'|awk '{ print $5 " " $6 }' | while read output;
df -PH | grep -vE '^Filesystem|none|cdrom|swdepot'|awk '{ print $5 " " $6 }' > diskcheck.log;

#diskcheck is current output whereas disk_alert is previous runned output

if [ -s "$HOME/DBA/monitor/log/disk_alert.log" ]; then
#Getting variables and compare with old
  usep=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/diskcheck.log | cut -d'%' -f1)
  usep1=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/log/disk_alert.log | cut -d'%' -f1)
  partition=$(cat $HOME/DBA/monitor/diskcheck.log | awk '{ print $2 }' )
else
   cat $HOME/DBA/monitor/diskcheck.log > $HOME/DBA/monitor/log/disk_alert.log
fi
**echo $usep;
echo $usep1;**
if [ "$usep" -ge 60 ]; then
        if [ "$usep" -eq "$usep1" ]; then
                mail=$(awk '{ if("$usep" == "$usep1") print $0 }' $HOME/DBA/monitor/diskcheck.log)
                echo "Running out of space \"$mail ($usep%)\" on $(hostname) as on $(date)" | mail -s "Disk Space Alert: Mount $mail is $usep% Used" $maillist;
        fi
fi

输出(错误):

66 65 85 66
66 65 85 66
disk_alert.sh: line 19: [: 66
65
85
66: integer expression expected

我认为问题出在变量($usep 和 $usep1)中,它将值存储在单行中,这意味着(66 65 85 66),但它应该是

66
65
85
66

那么只有:

if [ "$usep" -ge 60 ]; then 
       this condition will pass.

答案1

让我们研究一下这一行:

usep=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/diskcheck.log | cut -d'%' -f1)

在这种情况下$0是有价值的66 65 85 66。因此cut -d'%'命令无法%在该值中找到分隔符并按原样返回。

它应该是:

usep=$(awk '{ if($1 > 60) print $1 }' $HOME/DBA/monitor/diskcheck.log

其中$1指向第一个字段


这同样适用于这一行:

usep1=$(awk '{ if($1 > 60) print $0 }' $HOME/DBA/monitor/log/disk_alert.log | cut -d'%' -f1)

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