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add cli cmd remove metadata from images with exiftool

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shell/README.md
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@ -1,23 +1,36 @@
## some quick and useful shell commands ## shell stuff
<br> <br>
### chapters
<br>
* **[shell scripts](shell_scripts)**
* **[zsh stuff](zsh)**
<br>
---
### some quick and useful shell commands
<br>
* downloading all pdfs of url * downloading all pdfs of url
<br> <br>
```shell ```shell
$ wget --recursive --level=2 --no-directories --no-host-directories --accept pdf wget --recursive --level=2 --no-directories --no-host-directories --accept pdf
``` ```
<br> <br>
* extended attributes of files * extended attributes of files
```shell ```shell
$ xattr -l $file xattr -l $file
``` ```
<br> <br>
@ -27,7 +40,7 @@ $ xattr -l $file
<br> <br>
```shell ```shell
$ codesign -dvvv $file.app codesign -dvvv $file.app
``` ```
<br> <br>
@ -37,17 +50,23 @@ $ codesign -dvvv $file.app
<br> <br>
```shell ```shell
$ system_profiler -detaillevel full system_profiler -detaillevel full
``` ```
<br> <br>
* 瑪麗 * 瑪麗
<br>
```shell
convert -size 360x360 xc:white -font "FreeMono" -pointsize 12 -fill black -draw @ascii.txt
```
<br> <br>
* remove metadata from images with **[exiftool](https://exiftool.org/install.html)**
```shell ```shell
$ convert -size 360x360 xc:white -font "FreeMono" -pointsize 12 -fill black -draw @ascii.txt exiftool -all= -overwrite_original input.jpg -o output.jpg
``` ```