Eu tentei instalar um pacote, mas houve algum tipo de problema com dependências. Primeiro eu tentei limpar tudo com o comando sudo apt-get autoremove e recebi uma mensagem de erro similar a com apt-get install
Saída após autoremove
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
4 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up apache2 (2.4.18-2ubuntu3.5) ...
info: Executing deferred 'a2enconf javascript-common' for package javascript-common
ERROR: Conf javascript-common does not exist!
dpkg: error processing package apache2 (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up mysql-common (5.7.20-0ubuntu0.16.04.1) ...
update-alternatives: error: alternative path /etc/mysql/my.cnf.fallback doesn't exist
dpkg: error processing package mysql-common (--configure):
subprocess installed post-installation script returned error exit status 2
dpkg: dependency problems prevent configuration of libmysqlclient20:amd64:
libmysqlclient20:amd64 depends on mysql-common (>= 5.5); however:
Package mysql-common is not configured yet.
dpkg: error processing package libmysqlclient20:amd64 (--configure):
dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of mysql-client-5.7:
mysql-client-5.7 depends on mysql-common (>= 5.5); however:
Package mysql-common is not configured yet.
dpkg: error processing package mysql-client-5.7 (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
No apport report written because MaxReports is reached already
Errors were encountered while processing:
apache2
mysql-common
libmysqlclient20:amd64
mysql-client-5.7
E: Sub-process /usr/bin/dpkg returned an error code (1)
Alguma solução? Parece que há algum problema com os pacotes apache2 , mysql-common etc. mas eu não tenho ideia desde que eu não sou muito experiente com a linha de comando.
Primeiro de tudo, faça backup dos seus bancos de dados, se você tiver alguns dados valiosos lá.
backup pode ser feito com
mysqldump -u{username} -p{password} {database_name} > {desired_file_name}.sql
observe que não há espaço entre -u e username e entre -p e password
Em seguida, remova completamente o mysql e reinstale-o, se necessário