ILIAS-7-Install-Tutorial for Ubuntu 20.04

ILIAS-Download, Composer

Create these directories outside webspace:
- mkdir /opt/iliasdata
- mkdir /opt/iliasdata/lucene
- mkdir /opt/iliasdata/log
- mkdir /opt/iliasdata/errorlog
Change to Webserver directory:
- cd /var/www/html
Download ILIAS latest via git:
- git clone https://github.com/ILIAS-eLearning/ILIAS.git ilias
- By the way:
  - You can update the current version of ILIAS with: git pull
  - You can switch the ILIAS version with: git checkout release_xx. Examples:
  - cd /var/www/html/ilias
    - ILIAS 5.2: git checkout release_5-2
    - ILIAS 5.3: git checkout release_5-3
    - ILIAS 5.4: git checkout release_5-4
    - ILIAS 6: git checkout release_6
    - ILIAS 7: git checkout release_7
  - Install composer:
    - cd /var/www/html/ilias
    - composer install --no-dev
Adjust the rightsettings:
- chown -R www-data:www-data /var/www/html
- chown -R www-data:www-data /opt/iliasdata
- chmod -R 774 /var/www/html
- chmod -R 770 /opt/iliasdata

Your requirements could not be resolved to an installable set of packages.
- Choose the correct PHP version as described here
Parse error: syntax error, unexpected '|', expecting variable (T_VARIABLE) in /usr/share/php/Composer/IO/BaseIO.php on line 163
- cd /root
- apt remove --purge composer
- apt autoremove
- systemctl restart apache2
- php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
- php -r "if (hash_file('sha384', 'composer-setup.php') === '55ce33d7678c5a611085589f1f3ddf8b3c52d662cd01d4ba75c0ee0459970c2200a51f492d557530c71c15d8dba01eae') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
- php composer-setup.php
- php -r "unlink('composer-setup.php');"
- mv composer.phar /usr/bin/composer

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