Get the image file src (url)   

    $fid = 1;//The file ID   

    $file = \Drupal\file\Entity\File::load($fid);

    $path = $file->getFileUri();



Equivalent syntax Drupal 7 -> Drupal 8

For this, You must use hook_entity_delete.



Example :

function mymodule_entity_delete(\Drupal\Core\Entity\EntityInterface $entity) {

  $entity_type = $entity->getEntityTypeId();

  $entity_id = $entity->id();



Example: 

Zip and Unzip Files on Linux (With zip and unzip)

Ziping files/directories

zip file *

zip -r file *

Unziping files/directories

unzip  file.zip

extract a file

unzip file.zip  file.doc