Dev-Pills

Snippets

# Systems # Windows # Java # Tomcat # Git # Javascript # CSS

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Add shortcuts in this folder to be able to add them to the start menu

Systems Windows

%AppData%\Microsoft\Windows\Start Menu\Programs

Send logs from tomcat console to a file, also known as "catalina.out"

Java Tomcat

Replace this at startup.bat:

call "%EXECUTABLE%" start %CMD_LINE_ARGS%

With:

SET isodt=%date:~6,4%-%date:~3,2%-%date:~0,2%
SET isodt=%isodt: =0%
SET logFile=..\logs\console.%isodt%.log

powershell "%EXECUTABLE% %CMD_LINE_ARGS% run 2>&1 | ForEach-Object ToString | Tee-Object %logFile% -Append"

Shortcut to open cmd at a defined route

Systems Windows

C:\WINDOWS\system32\cmd.exe /k "D: & cd D:\Bryan\Git"

Cherry pick a folder from an specific commit

Git

$ git checkout 1a64b23a8994cf9945eb4c1e9490e536e6a9117a -- path/to/the/folder/

Format a number of bytes to human readable text

Javascript

function bytesToHuman(bytes: number) {
    let i = Math.floor(Math.log(bytes) / Math.log(1024));
    let sizes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
    return `${(bytes / Math.pow(1024, i)).toFixed(2) * 1} ${sizes[i]}`;
}

Copy to clipboard from variable natively

Javascript

if (!navigator.clipboard) {
    console.error('Clipboard feature not supported in this browser')
    return
}
await navigator.clipboard.writeText(textVar)

Color RGBA with variables

CSS

--colorB: 25, 58, 154;
--color1: rgba(var(--colorB), 0.2);
--color2: rgba(var(--colorB), 0.14);
--color3: rgba(var(--colorB), 0.12);
box-shadow:
    0px 8px 10px -5px var(--color1),
    0px 16px 24px 2px var(--color2),
    0px 6px 30px 5px var(--color3)
    !important;

Add git commit hash using webpack

Javascript Git

// Get hash using command-line
let commitHash = require('child_process')
  .execSync('git rev-parse --short HEAD')
  .toString();

// Add to webpack plugins a new Plugin
...
plugins: [
    new webpack.DefinePlugin({
      __COMMIT_HASH__: JSON.stringify(commitHash),
    })
  ]
...

// Add to .eslintrc
globals: { __COMMIT_HASH__: true }

Create a .patch file from the last commit

Git

$ git format-patch HEAD~1 --stdout > patchfile.patch

Await X milliseconds in one line using async/await

Javascript

await new Promise(resolve => setTimeout(resolve, 1000));

Iterate over a number in Js like Ruby X.times()

Javascript

for (let i of Array(100).keys()) {
    console.log(i)
}

Path to windows hosts file

Systems Windows

C:\Windows\System32\drivers\etc

Traverse directory recursively with depth option

Javascript

function getFiles(dirPath, currentLevel, maxLevel) {
  if (currentLevel > maxLevel) {
    return
  } else {
    fs.readdirSync(dirPath).forEach(function (file) {
      let filepath = path.join(dirPath, file)
      let stat = fs.statSync(filepath)
      if (stat.isDirectory()) {
        getFiles(filepath, currentLevel + 1, maxLevel)
      } else {
        console.info(filepath + '\n')
      }
    })
  }
}