CommandLine

Determine life of SSD

sudo smartctl -t short -a /dev/sda

Setup new SSD on workstation

Check the device name

lsblk

Use gparted in UI

Docker Cleanup

If docker is being annoying and creating a ton of stuff in the overlay2 folder even though docker system df is clear. To fully clear Docker do the following

Clear the official documents

docker system clean -af

Clear overlay2 which is major surgery on docker

sudo systemctl stop docker.socket
sudo systemctl stop docker

sudo rm /var/lib/docker -r

sudo systemctl start docker.socket
sudo systemctl start docker

SQLITE3 Dump Resoration

If you have a database corruption and need to recreate a Sqlite3 Database, you can use the following commands:

cat db.schema | sqlite3 database.db
cat db.dump | | sqlite3 database.db

NOTE: Its important to use the schema because the ordering of the columns might not actually be correct on the original database and you'll get scrambled columns if you don't do this.

SSH Security

How to disable password SSH - link

Change Hostname

You can change the hostname of the server so the terminal names actually change. Super userful when you have a lot of servers running around

sudo hostnamectl set-hostname newhostname

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Last update: November 21, 2022 19:43:34