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#!/bin/bash
# 编写一个Shell脚本，接受一个目录名作为参数，并列出该目录下的所有文件和子目录，并人性化显示文件的大小
if [ -d $1 ]; then
echo "目录名：$1"
echo "文件列表："
# 也可以直接写成 ls -lh $1
output=`ls -lh $1`
echo "$output"
else
echo "目录不存在"
fi