回收站(trash)，为了可以找回删除的文件

1.add trash dir

mkdir -p ~/.trash

2.add trash

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tee >>~/.bash_profile <<'EOF'
#add trash
alias rm=trash
alias r=trash
alias rl='ls ~/.trash'
alias ru=undelfile
alias rc=cleartrash

#functions
undelfile()  
{
   mv -i ~/.trash/$@ ./
}

trash()
{
   if [[ "$(echo $@)" =~ "-r" || "$(echo $@)" =~ "-rf" ]];then
      echo "please cut -f/-rf, use rm"
   else
      mv $@  ~/.trash/
   fi
}

cleartrash()
{
   read -p "clear sure?[n|y]" confirm
   [ $confirm == 'y' ] || [ $confirm == 'Y' ]  && /bin/rm -rf ~/.trash/*  
}
EOF

source ~/.bash_profile

3.实战演示

# 删除文件，移动到回收站
rm/r xxx  

# 查看回收站文件
rl

# 恢复回收站内容到当前目录
ru

# 清空回收站
rc