node之http模块之fs模块(续)

const fs=require("fs")
fs.mkdirSync("./geyao1",(err)=>{
    console.log(err)
    if(err&&err.code==="EEXIST"){
        console.log("目录已经存在")
    }
})

const fs=require("fs")
fs.readdir("./geyao",(err,data)=>{
    console.log(data)
   data.forEach(item=>{
    fs.unlinkSync(`./geyao/${item}`)
   })
   fs.rmdir("./geyao",(err)=>{
    console.log(err)
   })
})

const fs=require("fs").promises
fs.readFile("./geyao1/hello.txt").then((data)=>{
    console.log(data)
})

const fs=require("fs").promises
fs.readdir("./geyao1").then( async(data)=>{
    let arr=[]
    data.forEach(item=>{
        fs.unlink(fs.unlink(`./geyao1/${item}`))
    })
   await Promise.all(arr)
   await fs.rmdir("./geyao1")
})

const fs=require("fs")
const ws=fs.createWriteStream("./2.txt","utf-8")
ws.write("1111111111")
ws.write("2222222222")
ws.write("3333333333")
ws.end()

const fs=require("fs")
const rs=fs.createReadStream("./1.txt")
const ws=fs.createWriteStream("./2.txt")
rs.pipe(ws)