# Misc. command line tools

### Base64 encoding

* Without whitespace: `base64 --wrap=0`

### Text encodings

* Convert ASCII to UTF8: `iconv --from-code=ascii --to-code=utf-8`

### Windows / WSL interop

* Copy WSL text into the Windows clipboard: `echo "Hello äöü" | iconv -f utf-8 -t utf-16le | clip.exe`
  * This converts it to UTF16 little endian and pipes it to the Windows clipboard :-)
* Start a web browser on Windows from WSL: `cmd.exe /C "start $( echo "https://github.com/" )"`

### git tips

#### `chmod +x` in git

```bash
git update-index --chmod=+x ./sample.sh
```

### Image renaming

Use [`jhead`](https://www.sentex.ca/~mwandel/jhead/) to extract EXIF metadata, and rename image files.

For example, this renames all images based on the date-taken EXIF metadata

```bash
jhead -n%Y-%m-%d--%H-%M-%S_%f *.jpg
```

* `-n[format-string]`
  * `%Y-%m-%d` Year (4 digit 1980-2036) / month number / day of month
  * `%H-%M-%S` hour (24h) / minute / second
  * `%f` original file name