Shell遍历文件夹下所有文件，并将文件内容写入一个文件中

#!/bin/bash
dir="."
target="./target.txt"
# 过滤指定文件或文件夹
filter=(node_modules out dist $target)

listfile() {
	filelist=`ls $1`
	for file in $filelist
	do
		if [[ "${filter[@]}" =~ "$file" ]];then
			continue
		fi

		if [ -d $1/$file ];then
			listfile $1/$file
		else
			cat $1/$file >> $target
		fi
	done
}

listfile $dir