脚本功能:
- 在用户执行rm命令时,将文件移动/dump-file/ ,被 移动到dump-file 目录下的文件、文件夹以原文件名+删除除的日期格式存放,如 weather.txt 在删除后就会被自动移动到/dump-file/ 下并命名为weather.txt_2010-05-07_14:46:51.bak
- 此命令在执行时会检测文件或目录的大小,如果文件或目录超过2GB,将不会再将文件移动到回收站,而会直接删除,此功能是为了避免回收站过大而对系统造成影响
安装需求:
1.创建删除文件存放目录mkdir /dump-file/ && chmod -R 777 /dump-file
2.创建日志输出文件 touch /tmp/rm.dump && chmod -R 777 /tmp/rm.dump
3.将系统rm命令移动成 rm.bak : mv /bin/rm /bin/rm.bak
4.将此脚本命名为/bin/rm 并给予可执行权限 :chmod 644 /bin/rm
#!/bin/bash
DumpFile=/dump-file/
File=echo $line|awk '{print $2}'
aa=$(echo $1|grep “^-”)
function TestDir(){
Test_Dir=$(echo KaTeX parse error: Expected 'EOF', got '#' at position 16: line|grep "/") #̲test if is a di…(echo $line |awk '{print KaTeX parse error: Expected 'EOF', got '}' at position 2: 2}̲'|grep "^/") # …(echo $line |awk -F/ '{print KaTeX parse error: Expected 'EOF', got '}' at position 2: 2}̲') #Extract the…(echo $line |awk ‘{print $2}’|awk -F/ ‘{print $1}’) ##Extract the prameter before the first “/”.
D1=date +%F_%H:%M:%S.bak
Date=echo $line | awk '{print $2 "_" D1}' D1=$D1
if [[ $Test_Dir != "" ]] ;then #If parameters include directory
if [[ $Test_Dir2 != "" ]] ;then #If parameter starts with "/",as formate /a/b/c/
echo $line "start with /"
mkdir $DumpFile$Dir2"_"$D1 2>/tmp/rm.dump # Create directory as format /dump-file/(first directory after "/")
mv `echo $line|awk '{print $2}'` $DumpFile$Dir2"_"$D1
echo $DumpFile$Dir2"_"$D1
else #Means that parameter starts without "/" ,as format a/b/c
mkdir $DumpFile$Dir$D1 #Create directory as format /dump-file/(first directory before "/")
mv `echo $line|awk '{print $2}'` $DumpFile$Dir$D1
echo $line "starts before /"
fi
else
Date=`echo $line | awk '{print $2 "_" D1}' D1=$D1`
mv `echo $line|awk '{print $2}'` $DumpFile$Date
fi
}
if [[ “$1” != “” ]] ;then #If the frist parameter is not empty.
if [[ $aa != "$1" ]];then #If the first parameter not start with "-".
du -s "$@" 2>/tmp/rm.dump |while read line
do
#TestDir
size=`echo $line | awk '$1 >2000000{print $1}'`
if [ "$size" > "1900000" ];then
echo "Lager than 2Mb"
else
TestDir
fi
done
else
if [[ "$2" != "" ]]; then
until [ "$2" == "" ]
do
#echo "function is running"
du -s $2 2> /tmp/rm.dump |while read line
do
size=`echo $line | awk '$1 >2000000{print $1}'`
if [ "$size" > "1900000" ];then
echo "Lager than 2Mb"
rm.bak -rf $2
else
TestDir
fi
shift
done
shift
done
else
echo -e "No file detected.\nTry 'rm --help' for more information. "
fi
fi
else
echo -e “rm: missing operand \nTry ‘rm --help’ for more information.”
fi