ssh -p12345 admin@192.168.1.201
Por defecto el puerto de ssh es el 12345 y el usuario admin, pero al realizar la conexión aparece el siguiente error:
(more…)Unable to negotiate with 192.168.1.201 port 12345: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1
Editar el archivo:
/etc/network/interface
Agregar al final:
auto wlan0
iface wlan0 inet dhcp
wpa-ssid {ssid}
wpa-psk {password}
Guardar y digitar el comando:
sudo dhclient wlan0
Los permisos correctos deben ser 755 para carpetas y 644 para archivos. Para realizar esta modificación de forma recursiva se deben usar los siguientes comandos:
find . -type f -print0 | xargs -0 chmod 644 find . -type d -print0 | xargs -0 chmod 755
Cuando ejecutamos
sudo apt-get update
aparece el error:
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://dl.winehq.org/wine-builds/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F W: Failed to fetch https://dl.winehq.org/wine-builds/ubuntu/dists/bionic/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F W: Some index files failed to download. They have been ignored, or old ones used instead.
Solución:
wget -nc https://dl.winehq.org/wine-builds/winehq.key && sudo apt-key add winehq.key && sudo apt update
sudo apt-get install --install-recommends winehq-stable
Editar el archivo /etc/mysql/my.cnf y agregar al final del archivo:
[mysqld]
general_log=on
general_log_file=/var/log/mysql/query.logReiniciar el servicio
service mysql restartRevisamos la salida
tail -f /var/log/mysql/query.log
A continuación muestro como cambiar la contraseña root de Mysql en Issabel
Detener el servicio mysql
systemctl stop mariadb
Iniciamos el modo seguro:
mysqld_safe --skip-grant-tables &
Hacemos un login a MySQL sin password
mysql -u root
Actualizamos la contraseña
update mysql.user set password=PASSWORD("1notfound1") where user='root';
Cargamos los privilegios / permisos y salimos de la sesión:
flush privileges; quit
systemctl start mariadb
Conectarse de un Equipo A con IP 192.168.1.10 a otro Equipo B con direccion ip 192.168.2.20 sin ingresar la contraseña.
ssh-keygen -t rsa
No ingresar contraseña
cat ~/.ssh/id_rsa.pub | ssh demo@192.168.2.20 "mkdir -p ~/.ssh && chmod 700 ~/.ssh && cat >> ~/.ssh/authorized_keys"ssh-copy-id demo@192.168.2.20ssh demo@192.168.2.20
Cuando se ejecuta sudo apt-get install php7.0 aparece el error:
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
php : Depends: php7.0 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.Se debe ejecutar el siguiente comando para verificar que PPAs tenemos configurados:
LC_ALL=C apt policySi la salida es esta:
500 http://ppa.launchpad.net/ondrej/php/ubuntu disco/main amd64 Packages
release v=19.04,o=LP-PPA-ondrej-php,a=disco,n=disco,l=***** The main PPA fo r supported PHP versions with many PECL extensions *****,c=main,b=amd64
origin ppa.launchpad.netQuiere decir que hemos roto el sistema agregando fuentes extranjeras, hay que eliminar las fuentes php del sourcelist:
cd /etc/apt/sources.list.d/Eliminar las fuentes php:
rm ondrej-ubuntu-php-disco.list
rm ondrej-ubuntu-php-disco.list.save
rm php7.3.list
rm php7.3.list.saveActualizar e instalar
apt-get update
apt-get install phpY listo.
Al querer agregar un repositorio aparece el error:
gpg: failed to start the dirmngr '/usr/bin/dirmngr': No such file or directoryAcompañado de:
gpg: connecting dirmngr at '/tmp/tmpyq7kwe2x/S.dirmngr' failed: No such file or directory
gpg: keyserver receive failed: No dirmngrPara solucionarlo hay que instalar el paquete dirmgr:
sudo apt-get install dirmngry listo.
Cuando queremos instalar algo desde la terminal aparece el error:
apt-listchanges: Can't set locale; make sure $LC_* and $LANG are correct!
Reading changelogs... Done
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US:en",
LC_ALL = (unset),
LC_TIME = "es_CO.UTF-8",
LC_MONETARY = "es_CO.UTF-8",
LC_ADDRESS = "es_CO.UTF-8",
LC_TELEPHONE = "es_CO.UTF-8",
LC_NAME = "es_CO.UTF-8",
LC_MEASUREMENT = "es_CO.UTF-8",
LC_IDENTIFICATION = "es_CO.UTF-8",
LC_NUMERIC = "es_CO.UTF-8",
LC_PAPER = "es_CO.UTF-8",
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_US.UTF-8").
locale: Cannot set LC_ALL to default locale: No such file or directory
Para solucionarlo instalamos la codificación español:
sudo locale-gen en_US.UTF-8Luego reconfiguramos:
export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
locale-gen en_US.UTF-8
dpkg-reconfigure localesY el error desaparece.