Uly.me

cloud engineer

Add path to zsh

Here’s how to add a path to zsh permanently.

Edit .zshrc file and add the path. Create .zshrc file if it’s missing.

export PATH=$PATH:/new/path

Exit and relaunch shell. The new path should be in effect.

Echo to display new path.

echo $PATH

Git Reset

To undo a git add, run git reset file or get reset.

git reset filename
git reset

Run git status to check.

git status

Bash Aliases

Create an alias.

alias gcloud='docker run --rm -ti --volumes-from gcloud-config google/cloud-sdk:latest gcloud'

Remove an alias.

unalias gcloud

GCP Add New Route

Here’s how to add a new route in Google Cloud Platform.

gcloud compute routes create name-of-new-route \
  --destination-range=200.20.0.0/15 \
  --next-hop-gateway=default-internet-gateway \
  --project=host-project \
  --network="default" \
  --priority=900

Adding Domains in Certbot

You can register multiple domains to a single SSL certificate. This is particularly useful if you are hosting multiple domains on one server. This command adds more domains to your existing certificate.

certbot --expand -d existing.com -d newdomain1.com -d newdomain2.com

Check if the domains were added.

certbot certificates

Certbot certificates are valid for 90 days, but they automatically renew themselves if expiration is less than 30 days. If you need to renew manually for some odd reason, you can run this command. You can also perform a dry-run before renewing.

certbot renew
certbot renew --dry-run