附录：扩展命令

Last updated 6 years ago

附录：扩展命令

DevOps 资讯 | 是时候升级你的命令行了
bat > cat
prettyping > ping
fzf > ctrl+r
htop > top
diff-so-fancy > diff
fd > find
ncdu > du
tldr > man
ack || ag > grep
jq > grep et al

子贡问为仁。子曰：“工欲善其事，必先利其器。居是邦也，事其大夫之贤者，友其士之仁者。” ——《论语·卫灵公》

bat > cat

cat 被用于打印文件内容。ccat 工具还提供像语法高亮显示这样的功能。在此基础之上，bat 还支持分页, 行号和 git 集成。同时允许在输出中搜索 (当输出长于屏幕高度时) 。更多信息：

# Linux
wget https://github.com/sharkdp/bat/releases/download/v0.6.1/bat-v0.6.1-x86_64-unknown-linux-gnu.tar.gz
make install

# Mac
brew install bat

#
alias cat='bat'

prettyping > ping

curl -O https://raw.githubusercontent.com/denilsonsa/prettyping/master/prettyping
chmod +x prettyping
./prettyping baiud.com

alias ping='prettyping --nolegend'

fzf > ctrl+r

# Linux
git clone --depth 1 https://github.com/junegunn/fzf.git ~/.fzf
~/.fzf/install
# Mac
brew install fzf

# alias
alias preview="fzf --preview 'bat --color \"always\" {}'"
# add support for ctrl+o to open selected file in VS Code
export FZF_DEFAULT_OPTS="--bind='ctrl-o:execute(code {})+abor

htop > top

htop 提供的键盘快捷键：

P - 按 CPU 利用率排序
M - 按内存利用率排序
F4 - 按字符串过滤进程
space - 高亮显示某一进程，便于持续跟踪

alias top="sudo htop" # alias top

diff-so-fancy > diff

# download
wget https://raw.githubusercontent.com/so-fancy/diff-so-fancy/master/third_party/build_fatpack/diff-so-fancy
chmod +x diff-so-fancy
# npm
npm install -g diff-so-fancy
# 直接调用
git diff --color | diff-so-fancy

在 git diff 和 git show 中启用 diff-so-fancy ，需要修改 gitconfig :

[pager]
       diff = diff-so-fancy | less --tabs=1,5 -RFX
       show = diff-so-fancy | less --tabs=1,5 -RFX

除了默认样式优化，diff-so-fancy 还支持颜色和显示项定制，例如：

git config --global color.ui true

git config --global color.diff-highlight.oldNormal    "red bold"
git config --global color.diff-highlight.oldHighlight "red bold 52"
git config --global color.diff-highlight.newNormal    "green bold"
git config --global color.diff-highlight.newHighlight "green bold 22"

git config --global color.diff.meta       "yellow"
git config --global color.diff.frag       "magenta bold"
git config --global color.diff.commit     "yellow bold"
git config --global color.diff.old        "red bold"
git config --global color.diff.new        "green bold"
git config --global color.diff.whitespace "red reverse"

git config --bool --global diff-so-fancy.markEmptyLines false

fd > find

常用的命令行：

## SourceCode
git clone https://github.com/sharkdp/fd
cd fd
cargo build
cargo test
cargo install

# Mac
brew install fd

## Usage
fd cli # 查找所有包含"cli"的文件名
fd -e md # 查找所有 .md 文件
fd cli -x wc -w # 查找 "cli" 并运行 `wc -w`

ncdu > du

git clone git://g.blicky.net/ncdu.git/

# release
wget https://dev.yorhel.nl/download/ncdu-1.13.tar.gz
tar -xvf ncdu-1.13.tar.gz
./configure
make
make install

# Usage
ncdu path

alias du="ncdu --color dark -rr -x --exclude .git --exclude node_modules"

# 扩展选项
--color dark - use a colour scheme
-rr - read-only mode (prevents delete and spawn shell)
--exclude ignore directories I won't do anything about

tldr > man

# Install
npm install -g tldr

alias help='tldr'

# Usage
Options:

  -V, --version            output the version number
  -l, --list               List all commands for the chosen platform in the cache
  -a, --list-all           List all commands in the cache
  -1, --single-column      List single command per line (use with options -l or -a)
  -r, --random             Show a random command
  -e, --random-example     Show a random example
  -f, --render [file]      Render a specific markdown [file]
  -m, --markdown           Output in markdown format
  -o, --os [type]          Override the operating system [linux, osx, sunos]
  --linux                  Override the operating system with Linux
  --osx                    Override the operating system with OSX
  --sunos                  Override the operating system with SunOS
  -t, --theme [theme]      Color theme (simple, base16, ocean)
  -s, --search [keywords]  Search pages using keywords
  -u, --update             Update the local cache
  -c, --clear-cache        Clear the local cache
  -h, --help               output usage information

# Example
bash-3.2$ tldr tar
✔ Page not found. Updating cache
✔ Creating index

  tar

  Archiving utility.
  Often combined with a compression method, such as gzip or bzip.

  - Create an archive from files:
    tar cf target.tar file1 file2 file3

  - Create a gzipped archive:
    tar czf target.tar.gz file1 file2 file3

  - Extract an archive in a target folder:
    tar xf source.tar -C folder

ack || ag > grep

curl https://beyondgrep.com/ack-2.24-single-file > ~/bin/ack && chmod 0755 ~/bin/ack

ack 和 ag 默认情况下使用正则表达式进行搜索,可以指定文件类型 —— 使用像 --js 或 --html 标志搜索。ack 和 ag 工具都支持 grep 选项, 如 -B (表示输出匹配行和其之后(after)的N行)。

ack 默认没有支持 markdown 格式，可以在 .ackrc 文件定制：

--type-set=md=.md,.mkd,.markdown
--pager=less -FRX

jq > grep et al

jq is like sed for JSON data

npm i $(echo $(\
  npm outdated --json | \
  jq -r 'to_entries | .[] | "\(.key)@\(.value.latest)"' \
))

{
  "node-jq": {
    "current": "0.7.0",
    "wanted": "0.7.0",
    "latest": "1.2.0",
    "location": "node_modules/node-jq"
  },
  "uuid": {
    "current": "3.1.0",
    "wanted": "3.2.1",
    "latest": "3.2.1",
    "location": "node_modules/uuid"
  }
}

node-jq@1.2.0
uuid@3.2.1

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Last updated 6 years ago