IT infrastructure and architecture How to view the contents of a keystore pkcs12 with openssl, case truststore Directory Services of ForgeRock To view the content of a keystore in the form of PKCS12 run the openssl command as for example on the truststore of an installation of Directory Services (evolution of openDJ) of ForgeRock:
IT infrastructure and architecture How reload /etc/environment without reload linux or restarting session When you change the linux /etc/environment file where the general environment variables for all sessions are specified, it can be executed to load the new definition of the file into the session
IT infrastructure and architecture How to activate and configure ssh server in windows 10 Open Power shell with administrator elevation, and run the following to install it:Add-WindowsCapability -Online -Name OpenSSH.Server* Then we start the service:Start-Service sshd We specify that it starts automatically on each
IT infrastructure and architecture Key combination on MacBook Pro with Intel processor for booting Booting your Mac has the following key configuration options to boot in different modes by first pressing the Mac's boot key, except in cases where it is indicated not to, and immediately press
IT infrastructure and architecture How to easily install Windows 10 on a MacBook Pro To install Windows 10 on a MacBook PRO model A1398 with Intel processor without macOS installed is easily from a USB Flash recovery of a Windows 10, in my case in a Lenovo
IT infrastructure and architecture How to install a macOS High Sierra from scratch on a MacBook Pro I detail the actions to perform to install the macOS High Sierra 10.13 on a MacBook PRO model A1298 with micro Intel, from a bootable USB flash that I prepare in a
Bugs and errors fix What to do if your Mac won't boot In a MacBook Pro Model A1398 with micro Intel I made several installations of different OS (Windows 10, Ubuntu 20.04, etc.) and at a time that I deleted the different partitions of
Bugs and errors fix How to fix error when restoring macOS "This copy of the Install macOS High Sierra applicacion is damaged, and can't be used to install macOS" Restoring a macOS from scratch on to Intel-based MacBook Pro Model A1398 I encountered the error while running "Reinstall macOS":"This copy of the Install macOS High Sierra application is damaged, and can't
Development Simlinks, hard links and junctions in Windows Simlinks: There is really only one directory or file in storage, and the link. The space required is not doubled.It is a direct access to a directory or fileIt can be done
Bugs and errors fix How to fix in docker and docker-compose the error 'PermissionError: [Errno 13] Permission denied' in the fastest way ... and possibly unorthodox If you have the error 'PermissionError: [Errno 13] Permission denied' when running a docker-compose you can quickly fix the problem as follows:chmod 777 /var/run/docker.sock It is a problem of
Development JavaScript and its execution engines A JavaScript engine is a tool that executes JavaScript code.There are two types of JavaScript engines from the point of view of operation: runtime interpretes JIT: just-in-time compilation Runtime interpreters have less
Development Scopes and declaration of variables with var, let and const in JavaScript In JavaScript there are two main scopes where to locate the variables, and these scopes determine the accessibility to these variables:* global * local: no están accesibles desde el scope global A variable in
IT infrastructure and architecture How to disable systemd-resolved in linux ubuntu 18.04 and 20.04... and how to ensure that your resolv.conf does not update on each reboot In the latest distributions of ubuntu 18.04 and 20.04 that I used have activated the sysemd-resolved that I do not like at all, especially for not allowing me a more particular
IT infrastructure and architecture How to export a private key to RSA PEM format with ssh-keygen To manage authentication to ssh or sftp services I always do it through ssh keys, and I usually generate them with the following ssh-keygen command:ssh-keygen -t rsa -b 4086 -C usersftp@localhost
Development openssl - Linux man page with examples: example with command s_client and options showcerts, servername y connect Example with the command 's_client' of openssl to see the certificates of a domain. With the 'connect' option we specify the IP or DNS of the server we want to consult, the
Development openssl - Linux man page with examples NAME openssl - OpenSSL command line tool SYNOPSIS openssl command [ command_opts ] [ command_args ] openssl list [ standard-commands | digest-commands | cipher-commands | cipher-algorithms | digest-algorithms | public-key-algorithms] openssl no-XXX [ arbitrary options ] DESCRIPTION OpenSSL is a cryptography toolkit implementing
IT infrastructure and architecture How install docker-compose on ubuntu 20.04 armhf in Raspberry Pi 3 B In the repository of the official list of versions in githab:https://github.com/docker/compose/releasesthere are no versions for armhf. Well, I haven't found them.Therefore, to install docker-compose on a
IT infrastructure and architecture How install docker on ubuntu 20.04 armhf in Raspberry Pi 3 B Run the command:sudo apt install docker.io Once installed we check the version:docker --version Which in my example returns:operatorvm@vmrp01ubuntu2004web:~$ docker --version Docker version 20.10.2, build 20.10.
IT infrastructure and architecture How to make a user sudo in ubuntu 20.04 With a root user or with sudo privileges execute the following:sudo adduser username sudo Example:ubuntu@vmrp01ubuntu2004web:~$ sudo adduser operatorvm sudo Adding user `operatorvm' to group `sudo' ... Adding user operatorvm to group
Development Using curl: proxy calls with user and password to URLs with basic authentication The way to use curl for calls to a URL that have basic authentication through a proxy with per-user authentication and password is as follows:curl -v -o /dev/null -x http://myproxy.
Bugs and errors fix How to fix error problem with installed package podman and buildah installed docker-ce in CentOS If you try to install on a CentOS 8 docker-ce and you get the following error:[operatorfeitam@localhost ~]$ sudo yum install docker-ce docker-ce-cli containerd.io Last metadata expiration check: 0:03:31 ago
IT infrastructure and architecture How to create a user on Ubuntu 18.04.3 LTS armv71 on Raspberry Pi 2 Model B+ encapsulated to only access by SFTP In this entry we will see how we create a user on an Ubuntu OS 18.04.3 LTS armv71 on a Raspberry Pi 2 Model B+ that can only access a specific
Bugs and errors fix How to fix Microsoft Office hyperlink problem with errors "Cannot locate the Internet server or proxy server" and "Cannot open the specified file" In some Microsoft Office installation sometimes when you press Ctrl+click on hyperlinks you get the error message "Cannot locate the Internet server or proxy server" (in Spanish the message that appears is
IT infrastructure and architecture Backup recommendations in Windows 10 I am going to detail the backup recommendations to follow on a Windows 10. They are logical recommendations that can be followed in the same way on other operating systems like Ubuntu or
IT infrastructure and architecture How fix error Impossible to lookup any SSHKeyStore named instance: org.jboss.weld.exceptions.WeldException: WELD-000049: Unable to invoke public void org.uberfire.ssh.service.backend.keystore.impl.storage.DefaultSSHKeyStore.init() in jBPM KIE Server Today I encountered the following error that prevented me from deploying the jBPM application to the JBoss Wildfly 19.1.0 server in the business-central.war drop-down:22:04:40,186 INFO [org.
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