我們在日常的監控中要考慮到磁碟空間的問題，經常會把日誌檔案壓縮備份並刪除原檔案。

我們在基礎(八)中已經學習了壓縮檔案的命令，我們需要做的是把壓縮命令與指令碼結合起來。

這裡以實戰(四)中寫入檔案的監控指令碼為基礎，加上壓縮備份tar和刪除原檔案rm的命令。

原checkSpace.sh程式碼如下:

#!/bin/bash 

function GetDiskSpc   
 {   
    if [ $# -ne 1 ]   
    then   
        return 1   
    fi   
  
    Folder="$1$"  
    DiskSpace=`df -k |grep $Folder |awk '{print $5}' |awk -F% '{print $1}'`
    echo $DiskSpace   
 }  
 



function CheckDiskSpc   
 {   
  
 DiskSpace=`GetDiskSpc $1`   
  
 echo "The system $Folder disk space is $DiskSpace%"  
  
  echo "The system $Folder disk space is $DiskSpace%"  >> space.txt
  
 if [ $DiskSpace -gt 90 ]   
 then   
 {   
    echo "The usage of system disk($Folder) is larger than 90%"  
	   echo "The usage of system disk($Folder) is larger than 90%"   >> space.txt
 }   
 else   
 {   
    echo "The usage of system disk($Folder)  is normal"  
	 echo "The usage of system disk($Folder)  is normal"   >> space.txt
 }   
 fi  
  
}  


CheckDiskSpc  /boot  
 

修改後的checkSpace.sh指令碼如下:

#!/bin/bash 

function GetDiskSpc   
 {   
    if [ $# -ne 1 ]   
    then   
        return 1   
    fi   
  
    Folder="$1$"  
    DiskSpace=`df -k |grep $Folder |awk '{print $5}' |awk -F% '{print $1}'`
    echo $DiskSpace   
 }  
 



function CheckDiskSpc   
 {   
  
 DiskSpace=`GetDiskSpc $1`   
  
 echo "The system $Folder disk space is $DiskSpace%"  
  
  echo "The system $Folder disk space is $DiskSpace%"  >> space.txt
  
 if [ $DiskSpace -gt 90 ]   
 then   
 {   
    echo "The usage of system disk($Folder) is larger than 90%"  
	   echo "The usage of system disk($Folder) is larger than 90%"   >> space.txt
 }   
 else   
 {   
    echo "The usage of system disk($Folder)  is normal"  
	 echo "The usage of system disk($Folder)  is normal"   >> space.txt
 }   
 fi  
  
}  


CheckDiskSpc  /boot  


tar cvf  - /data/shell/space.txt  > /data/shell/space.tar

rm space.txt
 

執行後結果如下:

發現已經成功把space.txt打包並刪除了txt。

解壓後可看到結果檔案。

當然這裡的路徑可以進行相應調整。