Hector Perez

Generate random bytes openssl rand -base64 512 openssl rand -hex 512 openssl rand -base64 -out myFile.key 512 Check the format of the private key openssl rsa -check -in private_key.pem Generate RSA key pair openssl genrsa -out private_key_2048.pem 2048 openssl rsa -in private_key_2048.

List of all know shortcuts for MacOS Ventura 13.5 and Sonoma 14.0

Linux permissions r w x Binary Decimal rwx Meaning 1 1 1 111 7 rwx Read, Write, Execute 1 1 0 110 6 rw- Read, Write 1 0 1 101 5 r-x Read, Execute 1 0 0 100 4 r-- Read 0 1 1 011 3 -wx Write, Execute 0

Install docker apt install docker.io Uninstall docker apt-get remove docker docker-engine docker.io Export container to TAR file docker export containerNameOrID > /home/user/my_file_name_$(date +%d-%m-%Y_%H-%M-%S).tar Import container from TAR file docker import /home/user/my_file_name.tar docker import

Create Database use blog db.createCollection("posts") Connection string for replica set mongodb://db1.server.com:port,db2.server.com:port,arbiter.server.com:port/MyDataBaseName?replicaSet=MyReplicaSetName Connection string for an authenficated replica set mongodb://myusername:mypassw0rd@db1.server.com:port,db2.server.com:port,arbiter.server.com:port/