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Size 分割区总容量
Used 已使用的大小
Avail 剩下的大小
Use% 使用的百分比
Mounted on 路径地址

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du -h --max-depth=1 /root/* 查看目录下的所有文件大小
du -h --max-depth=1 /root 列出root目录下面所有的一级目录文件大小；

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export MY_INSTALL_DIR=$HOME/.local

mkdir -p $MY_INSTALL_DIR

export PATH="$MY_INSTALL_DIR/bin:$PATH"

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sudo apt install -y cmake

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sudo apt install -y build-essential autoconf libtool pkg-config

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git clone --recurse-submodules -b v1.41.0 https://github.com/grpc/grpc

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cd grpc
mkdir -p cmake/build
pushd cmake/build
cmake -DgRPC_INSTALL=ON \
    -DgRPC_BUILD_TESTS=OFF \
    -DCMAKE_INSTALL_PREFIX=$MY_INSTALL_DIR \
    ../..
make -j
make install
popd

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# cmake
mkdir -p cmake/build
cd cmake/build
cmake ../..
make

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#!/bin/bash
GITLAB_DIR=/home/lucas/gitlab/data

docker run -d \
    -p 5443:443 \
    -p 9998:9998 \
    -p 2222:22 \
    --name gitlab \
    -v ${GITLAB_DIR}/config:/etc/gitlab \
    -v ${GITLAB_DIR}/logs:/var/log/gitlab \
    -v ${GITLAB_DIR}/data:/var/opt/gitlab \
    gitlab/gitlab-ce:latest

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alias gs = "git status"
alias ga = "git add -A"
alias gd = "git diff"
alias gc = "git commit -m"

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git clone -c http.proxy="127.0.0.1:7078" xxx

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CGO_ENABLED=0 GOOS=linux GOARCH=amd64    go build -v -a main.go

CGO_ENABLED=0 GOOS=darwin GOARCH=amd64   go build -v -a main.go

CGO_ENABLED=0 GOOS=windows GOARCH=amd64  go build -v -a main.go

# 编译时添加参数
 -ldflags "-X 'main.Version=v1.0.0' -X 'main.BuildTime=`date +"%Y-%m-%d %H:%M:%S"`' -X 'main.GoVersion=`go version`' "

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# linux  date和时间戳转换
1：查看当前时间
date +"%Y-%m-%d %H:%M:%S"

输出："2021-03-25 18:12:38"

2：查看指定时间，转为时间戳
date +%s
date -d "2021-03-25 18:12:38" +"%Y-%m-%d %H:%M:%S"
date -d "2021-03-25 18:12:38" +%s

3：时间戳转换为date
date -d @1416387827
date -d @1416387827 +"%Y-%m-%d %H:%M:%S"

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minikube start \
    --driver docker \
    --image-mirror-country=cn \
    --registry-mirror https://3laho3y3.mirror.aliyuncs.com \
    --image-repository=registry.cn-hangzhou.aliyuncs.com/google_containers \
    --kubernetes-version=v1.20.7

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#
curl ipinfo.io
#
curl -vv www.google.com

# ------------------查看ip--------------------
ip addr show | grep "inet"

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cat /etc/*elease

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# ----------------------WSL2压缩磁盘空间------------------------
PowerShell，直接运行 diskpart 命令就好
select vdisk file=D:\wsl\Ubuntu-20.04\ext4.vhdx
compact vdisk

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# If you come from bash you might have to change your $PATH.
# export PATH=$HOME/bin:/usr/local/bin:$PATH

# Path to your oh-my-zsh installation.
export ZSH="/home/lucas/.oh-my-zsh"

# Set name of the theme to load --- if set to "random", it will
# load a random theme each time oh-my-zsh is loaded, in which case,
# to know which specific one was loaded, run: echo $RANDOM_THEME
# See https://github.com/ohmyzsh/ohmyzsh/wiki/Themes

# 修改默认主题
ZSH_THEME="ys"

# Set list of themes to pick from when loading at random
# Setting this variable when ZSH_THEME=random will cause zsh to load
# a theme from this variable instead of looking in $ZSH/themes/
# If set to an empty array, this variable will have no effect.
# ZSH_THEME_RANDOM_CANDIDATES=( "robbyrussell" "agnoster" )

# Uncomment the following line to use case-sensitive completion.
# CASE_SENSITIVE="true"

# Uncomment the following line to use hyphen-insensitive completion.
# Case-sensitive completion must be off. _ and - will be interchangeable.
# HYPHEN_INSENSITIVE="true"

# Uncomment the following line to disable bi-weekly auto-update checks.
# DISABLE_AUTO_UPDATE="true"

# Uncomment the following line to automatically update without prompting.
# DISABLE_UPDATE_PROMPT="true"

# Uncomment the following line to change how often to auto-update (in days).
# export UPDATE_ZSH_DAYS=13

# Uncomment the following line if pasting URLs and other text is messed up.
# DISABLE_MAGIC_FUNCTIONS=true

# Uncomment the following line to disable colors in ls.
# DISABLE_LS_COLORS="true"

# Uncomment the following line to disable auto-setting terminal title.
# DISABLE_AUTO_TITLE="true"

# Uncomment the following line to enable command auto-correction.
# ENABLE_CORRECTION="true"

# Uncomment the following line to display red dots whilst waiting for completion.
# COMPLETION_WAITING_DOTS="true"

# Uncomment the following line if you want to disable marking untracked files
# under VCS as dirty. This makes repository status check for large repositories
# much, much faster.
# DISABLE_UNTRACKED_FILES_DIRTY="true"

# Uncomment the following line if you want to change the command execution time
# stamp shown in the history command output.
# You can set one of the optional three formats:
# "mm/dd/yyyy"|"dd.mm.yyyy"|"yyyy-mm-dd"
# or set a custom format using the strftime function format specifications,
# see 'man strftime' for details.
# HIST_STAMPS="mm/dd/yyyy"

# Would you like to use another custom folder than $ZSH/custom?
# ZSH_CUSTOM=/path/to/new-custom-folder

# Which plugins would you like to load?
# Standard plugins can be found in $ZSH/plugins/
# Custom plugins may be added to $ZSH_CUSTOM/plugins/
# Example format: plugins=(rails git textmate ruby lighthouse)
# Add wisely, as too many plugins slow down shell startup.
plugins=(
    git
    zsh-syntax-highlighting
    zsh-autosuggestions
    sudo
)

source $ZSH/oh-my-zsh.sh

# User configuration

# export MANPATH="/usr/local/man:$MANPATH"

# You may need to manually set your language environment
# export LANG=en_US.UTF-8

# Preferred editor for local and remote sessions
# if [[ -n $SSH_CONNECTION ]]; then
#   export EDITOR='vim'
# else
#   export EDITOR='mvim'
# fi

# Compilation flags
# export ARCHFLAGS="-arch x86_64"

# Set personal aliases, overriding those provided by oh-my-zsh libs,
# plugins, and themes. Aliases can be placed here, though oh-my-zsh
# users are encouraged to define aliases within the ZSH_CUSTOM folder.
# For a full list of active aliases, run `alias`.
#
# Example aliases
# alias zshconfig="mate ~/.zshrc"
# alias ohmyzsh="mate ~/.oh-my-zsh"

source $ZSH_CUSTOM/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
source $ZSH_CUSTOM/plugins/zsh-autosuggestions/zsh-autosuggestions.zsh

# 修改默认编辑器为vim
export EDITOR=/usr/bin/vim

export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export GOBIN=$GOPATH/bin
export PATH=$GOPATH:$GOBIN:$GOROOT/bin:$PATH

export RUSTUP_DIST_SERVER=https://mirrors.ustc.edu.cn/rust-static
export RUSTUP_UPDATE_ROOT=https://mirrors.ustc.edu.cn/rust-static/rustup

export PATH="$HOME/bin:$HOME/.local/bin:$PATH"
export PATH="$PATH:/mnt/c/Program\ Files/Docker/Docker/resources/bin"
export PATH="$PATH:/usr/local/lib/node-v16.4.2-linux-x64/bin"

# export DOCKER_HOST="tcp://0.0.0.0:2375"

# alias
# alias docker=docker.exe
# alias docker-compose=docker-compose.exe
# alias go colorgo

# history 命令显示时间
export HIST_STAMPS="yyyy-mm-dd"

# ----------------proxy----------------------
#
WindowsIP=$(cat /etc/resolv.conf | grep -oP '(?<=nameserver\ ).*')
PROXY_PORT=7078
PROXY_HTTP="http://${WindowsIP}:${PROXY_PORT}"
# Git & SSH for Git proxy
proxy_git() {
    git config --global http.https://github.com.proxy ${PROXY_HTTP}
    if ! grep -qF "Host github.com" ~/.ssh/config; then
        echo "Host github.com" >>~/.ssh/config
        echo "  User git" >>~/.ssh/config
        echo "  ProxyCommand nc -X 5 -x ${PROXY_SOCKS5} %h %p" >>~/.ssh/config
    else
        lino=$(($(awk '/Host github.com/{print NR}' ~/.ssh/config) + 2))
        sed -i "${lino}c\  ProxyCommand nc -X 5 -x ${PROXY_SOCKS5} %h %p" ~/.ssh/config
    fi
}
# Set proxy
set_proxy() {
    export http_proxy="${PROXY_HTTP}"
    export https_proxy="${PROXY_HTTP}"
    proxy_git
}
# Unset proxy
unset_proxy() {
    unset http_proxy
    unset https_proxy
    git config --global --unset http.https://github.com.proxy
}

# Set alias
alias proxy=set_proxy
alias deproxy=unset_proxy

alias px='proxychains4' # 此后 px curl google.com

# wsl sync time
# alias synctime='sudo ntpdate asia.pool.ntp.org;sudo ntpdate time.nist.gov;'
alias synctime1='sudo ntpdate asia.pool.ntp.org;'
alias synctime2='sudo ntpdate time.nist.gov;'

# 手动释放内存
alias freemem='~/myshell/free-mem.sh'

# alias godoc='GO111MODULE=off godoc'
alias fy='unproxy dict'

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d, err := ioutil.ReadFile("foo.txt")
if err != nil {
    log.Fatalf("ioutil.ReadFile failed with '%s'\n", err)
}
fmt.Printf("Size of 'foo.txt': %d bytes\n", len(d))

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f, err := os.Open("foo.txt")
if err != nil {
    log.Fatalf("os.Open failed with '%s'\n", err)
}
defer f.Close()

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// ReadLines reads all lines from a file
func ReadLines(filePath string) ([]string, error) {
	file, err := os.OpenFile(filePath, os.O_RDONLY, 0644)
	if err != nil {
		return nil, err
	}
	defer file.Close()
	scanner := bufio.NewScanner(file)
	res := make([]string, 0)
	for scanner.Scan() {
		line := scanner.Text()
		res = append(res, line)
	}
	if err = scanner.Err(); err != nil {
		return nil, err
	}
	return res, nil
}

func main() {
	path := "main.go"
	lines, err := ReadLines(path)
	if err != nil {
		log.Fatalf("ReadLines failed with '%s'\n", err)
	}
	fmt.Printf("File %s has %d lines\n", path, len(lines))
}

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d := []byte("content of the file")
err := ioutil.WriteFile("foo.txt", d, 0644)
if err != nil {
    log.Fatalf("ioutil.WriteFile failed with '%s'\n", err)
}

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f, err := os.Create("foo.txt")
if err != nil {
    log.Fatalf("os.Open failed with '%s'\n", err)
}

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f, err := os.OpenFile(filePath, os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0666)
if err != nil {
    log.Fatalf("os.Open failed with '%s'\n", err)
}

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d := []byte("data to write")
nWritten, err := f.Write(d)