Mysql export kann sehr lange dauert, wenn man viele und große Datenbanken hat. Damit man schnell ein Backup von allen DBs erstellen kann:

mysqldump --opt --quick --all-databases > /root/backup/mysql/alldbs.sql
  
  

Wenn User login notwendig ist :

mysqldump -u root -p --opt --quick --all-databases > /root/backup/mysql/alldbs.sql

1. Firefox
2. Chrome
3. Opera
4. Vivaldi
5. PDF Reader
6. Winrar
7. Docker
8. PhpStorm
9. OpenOffice
10. 1Password
11. Box
12. Cloud Software
13. FileZilla FTP Client
14. Eraser
15. Foldersize
16. MS Office
17. Node.js
18. Postman
19. Python
20. Skype
21. Smart Switch
22. VeraCrypt / TrueCrypt
23. Keepass
24. Teamviewer
25. WAMP Server / XAMPP
26. PowerShell
27. Ubuntu for Windows

While (endless, stop: CTRL+C)

while : 
 do 
  date
  echo "Hello "
  sleep 5
 done

Alternativ:

while : ; do date; echo "Hello "; sleep 6; done

For (5x):

for i in {1..5}
do
   echo "Number is $i "
   sleep 2
done

 Alternativ 1:

for i in {1..5}; do echo "Number is $i "; sleep 2; done

 Alternativ 2:

for i in {1..5}; do echo "Number is $i " && sleep 2; done

Search for BERLIN in a very big file

cat very-big-bigfile.txt | grep -o -P '.{0,33}BERLIN.{0,44}'

1 * * * * wget -O /dev/null -o /dev/null my-example-website.com

1. Search / Grep  content of files in all-documents/
2. Move files containing africa to documents-africa/

grep -siRlI 'africa' all-documents/ | xargs mv -t documents-africa/

tar --exclude='./dir2ignore' --exclude='./cache_etc' -zcvf /backup/myarchive.tar.gz .

So geht es:

drush php-eval 'my_custom_module_cron();'

Controller könnte so aussehen:

<?php

class myController extends ControllerBase
{
    public function myFunc1()
    {
        $html = " ... ";
        return [
            '#type' => 'inline_template', 
            '#template' => '{{ html|raw }}', 
            '#context' => ['html' => $html]
        ];
    }
}

Command 1:

drush sql:dump  | gzip -c > /home/backup/db-$(date +%Y-%m-%d-%H%M).sql.gz

Error:

mysqldump: Error: 'Access denied; you need (at least one of) the PROCESS privilege(s) for this operation' when trying to dump tablespaces

Lösung:

drush sql:dump --extra-dump=--no-tablespaces