#!/bin/bash
echo <<END
This script create a new folder named .TrAsH in home directory
and aliased your command *<rm>* usinf function trash, then all your
removed file weill be saved in ~/.TrAsH. You can choose to clear
it at fixed time or by yourself using the command *<rmf>* to clear them
END
if [ -d ~/.TrAsH ]
then
echo "There is a folder named .TrAsH. Please changed it to another name"
exit 1
else
mkdir ~/.TrAsH
fi
cp ~/.bashrc ~/.bashrc.bak
cat <<ENDF >>~/.bashrc
alias rm=trash
alias ur=undelfile
alias rmf='/bin/rm -rf ~/.TrAsH/*'
undelfile()
{
mv -i ~/.TrAsH/$@ ./
}
trash()
{
mv -i $@ ~/.TrAsH/
}
ENDF
source ~/.bashrc
另外， 在万一真的悲剧发生了， 还有一个办法能挽回一些损失。（这个方法来自Coolshell--酷壳 ，未验证，速度可能比较慢）
grep
-a -B 50 -A 60
'some string in the file'
/dev/sda1
> results.txt
说明：
- 关于grep的-a意为–binary-files=text，也就是把二进制文件当作文本文件。
- -B和-A的选项就是这段字符串之前几行和之后几行。
- /dev/sda1，就是硬盘设备，
- > results.txt，就是把结果重定向到results.txt文件中。
