Troubleshooting —verbose Print verbose output (implies —wait). —log Log level to use. Default is ‘info’. Allowed values are ‘critical’, ‘error’, ‘warn’, ‘info’, ‘debug’, ‘trace’, ‘off’. -s —status Print process usage and diagnostics information. —prof-startup Run CPU profiler during startup —disable-extensions Disable all installed extensions. —disable-extension Disable an extension. —inspect-extensions Allow debugging and profiling of extensions. Check the developer tools for the connection URI. —inspect-brk-extensions Allow debugging and profiling of extensions with the extension host being paused after start. Check the developer tools for the connection URI. —disable-gpu Disable GPU hardware acceleration. —max-memory Max memory size for a window (in Mbytes).

### REPL

> 读取﹣求值﹣输出循环


- ipython [https://ipython.org/install.html](https:_ipython.org_install)

import java.util.Scanner;

public class AiMain { public static void main(String[] args) { Scanner sc = new Scanner(System.in); String str; while (true) { str = sc.next(); str = str.replace(“吗”, “”); str = str.replace(“?”, “!”); str = str.replace(“? “, “! “); System.out.println(str); } } }

### dbcli

- pgcli - Postgres Client with Auto-completion and Syntax Highlighting
- mycli - MySQL/MariaDB/Percona Client with Auto-completion and Syntax Highlighting
- litecli - SQLite Client with Auto-completion and Syntax Highlighting
- mssql-cli - Microsoft SQL Server Client with Auto-completion and Syntax Highlighting
- athenacli - AWS Athena Client with Auto-completion and Syntax Highlighting
- vcli - VerticaDB client
- iredis - Client for Redis with AutoCompletion and Syntax Highlighting### dotfile

dotfiles 就是软件的配置文件。一般用于软件设置，可以通过备份 dotfiles 的方式，同步软件设置<br />同步原理<br />
主要是应用了ln软连接的功能，命名格式如下:

ln [参数][目标文件或目录]

**dotfile example**

- 
`.bash_profile`


- 
`.bash_prompt`


- 
`.bashrc`


- 
`.curlrc`


- 
`.curlrc: Add back connect-timeout`


- 
`.exports`


- 
`.exports: Hide zsh warning on macOS`


- 
`.gdbinit`


- 
`.gitattributes`


- 
`.gitattributes: Disable normalizing line endings globally`


- 
`.gitconfig`


- 
`.gitignore`


- 
`.gvimrc`


- 
`.hgignore`


- 
`.hushlogin`


- 
`.inputrc`


- 
`.macos`


- 
`.osx`


- 
`.screenrc`


- 
`.tmux.conf`


- 
`.vimrc`


- 
`.wgetrc`


- 
[[https://leohxj.gitbooks.io/a-programmer-prepares/content/software/mac/dotfiles.html](https:_leohxj.gitbooks.io_a-programmer-prepares_content_software_mac_dotfiles)<br />
[https://github.com/mathiasbynens/dotfiles](https://github.com/mathiasbynens/dotfiles)]([https://leohxj.gitbooks.io/a-programmer-prepares/content/software/mac/dotfiles.html](https:_leohxj.gitbooks.io_a-programmer-prepares_content_software_mac_dotfiles)<br />
[https://github.com/mathiasbynens/dotfiles](https://github.com/mathiasbynens/dotfiles))


- 
[https://blog.spencerwoo.com/2020/07/how-i-manage-my-dotfiles/###](https://blog.spencerwoo.com/2020/07/how-i-manage-my-dotfiles/###) 如何写一个命令行


1. 选择开发语言（eg: Python\Rust\Go...）
1. 选择一个库
1. 加点颜色> optparse: [https://docs.python.org/zh-cn/3.8/library/optparse.html](https:_docs.python.org_zh-cn_3.8_library_optparse)

from optparse import OptionParser … parser = OptionParser() parser.add_option(“-f”, “—file”, dest=”filename”, help=”write report to FILE”, metavar=”FILE”) parser.add_option(“-q”, “—quiet”, action=”store_false”, dest=”verbose”, default=True, help=”don’t print status messages to stdout”)

(options, args) = parser.parse_args()

With these few lines of code, users of your script can now do the “usual thing” on the command-line, for example:

—file=outfile -q

**python-prompt-toolkit**

> [https://github.com/prompt-toolkit/python-prompt-toolkit](https://github.com/prompt-toolkit/python-prompt-toolkit)


![python-prompt-toolkit](https://github.com/prompt-toolkit/python-prompt-toolkit/raw/master/docs/images/ptpython.png)

class FuzzCommand { public static void main(String[] args) { // do some stuffs System.out.print(args[0]) } // javac FuzzCommand.java // java FuzzCommand Fuzz

**color**

def enable(): HEADER = ‘\033[95m’ OKBLUE = ‘\033[94m’ OKGREEN = ‘\033[92m’ WARNING = ‘\033[93m’ FAIL = ‘\033[91m’ ENDC = ‘\033[0m’ BOLD = “\033[1m”

def disable(): HEADER = ‘’ OKBLUE = ‘’ OKGREEN = ‘’ WARNING = ‘’ FAIL = ‘’ ENDC = ‘’

def infog(msg): print(OKGREEN + msg + ENDC)

def info(msg): print(OKBLUE + msg + ENDC)

def warn(msg): print(WARNING + msg + ENDC)

def err(msg): print(FAIL + msg + ENDC)

enable()

### 如何写一个脚本

1. 
选择一门开发语言

- Shell
- Bash
- Powershell


- Python
- Go
- Rust



**$profile**

git

function invoke-git { [alias(‘g’)] param( [parameter(mandatory = $true, position = 0)] [string] $cmd,

[parameter(mandatory = $false, valuefromremainingarguments = $true)]
[string[]]
$params

)

switch ($cmd) {

# add
'a' { git add $params }
# branch
'b' { git branch $params }
# checkout
'c' { git checkout $params }
# clone repo
'cl' { git clone $params }
# commit
'co' { git commit $params }
# fetch
'f' { git fetch $params }
# init
'i' { git init $params }
# log
'l' { git log $params }
# pretty log
'll' { git log --graph --pretty=format:'%cred%h%creset -%c(yellow)%d%creset %s %cgreen(%cr) %c(bold blue)<%an>%creset' --abbrev-commit }
# merge
'm' { git merge $params }
# pull
'pl' { git pull $params }
# push
'ps' { git push $params }
# rebase
'r' { git rebase $params }
# reset changes
'rs' { git reset $params }
# status
's' { git status $params }
# tag
't' { git tag $params }
# catchall
default { git $cmd $params }

} }

```

Reference

• https://kapeli.com/cheat_sheets/Bash_Shortcuts.docset/Contents/Resources/Documents/index
• https://github.com/fliptheweb/bash-shortcuts-cheat-sheet
• https://github.com/laixintao/myslides/blob/master/awesome-commandline/awesome-commandline.md
• https://revealjs.com
• https://www.dbcli.com/about/
• https://www.zhihu.com/question/267095526
• https://www.gnu.org/prep/standards/html_node/Option-Table.html#Option-Table
• https://wiki.archlinux.org/index.php/Dotfiles
• https://zh.wikipedia.org/wiki/%E7%AE%A1%E9%81%93_(Unix))