Cheat sheet

git config --global user.name "Your Name"
git config --global user.email "you@example.com"
git config --global init.defaultBranch main

gh auth login
gh auth status

git init -b main
git add -A
git commit -m "Initial commit"
gh repo create my-site --private --source=. --remote=origin --push

git clone https://github.com/USER/REPO.git
cd REPO
npm install

git status
git add -A
git commit -m "Describe the change"
git push

git stash push -u -m "wip"
git stash list
git stash pop

git status -sb
git log --oneline --graph -n 15
git diff
git diff --staged

git fetch
git log origin/main..HEAD --oneline
git log HEAD..origin/main --oneline

git log -p -- path/to/file
git log -S"text" --oneline
git blame path/to/file
git log --since="2 weeks ago" --oneline

git fetch
git pull
git pull --ff-only

git status
git add -A
git commit -m "msg"
git pull --no-rebase
git push

git switch main
git pull
git switch my-branch
git merge main

git switch main
git pull
git merge my-branch
git push

git merge main
git rebase main
git rebase --abort

git switch -c my-branch
git switch main
git branch -vv
git push -u origin my-branch

git switch -c my-change
git push -u origin my-change
gh pr create --fill
gh pr merge --squash --delete-branch

git branch -d my-branch
git push origin --delete my-branch
git fetch --prune

git reset --soft HEAD~1
git commit --amend -m "new message"

git revert <commit-id>
git push

git restore --staged file
git restore file
git clean -nd

git reflog
git switch -c rescue <commit-id>

git status
git add <file>
git commit
git merge --abort

git pull --no-rebase
git push

git rm -r --cached node_modules
git rm --cached .env
git check-ignore -v .env

git config --global core.autocrlf true
# in repo: .gitattributes
* text=auto

npm run build        # test locally first
git push             # triggers the deploy

git push origin my-branch   # preview deploy
git push origin main        # production deploy

vercel link
vercel env add MY_KEY
vercel env pull .env.local

vercel domains add example.com
vercel domains inspect example.com

vercel rollback <deployment-url>
git revert HEAD
git push

npm ci
npm run build
vercel logs <deployment-url>

UDP 514   classic syslog (fire and forget)
TCP 514   reliable (RFC 6587 framing)
TCP 6514  syslog over TLS (RFC 5425)
PRI = facility x 8 + severity

sudo apt install -y rsyslog
sudo rsyslogd -N1
sudo systemctl restart rsyslog
sudo ss -lunp | grep 514

New-NetFirewallRule -DisplayName "Syslog UDP 514" -Direction Inbound -Protocol UDP -LocalPort 514 -RemoteAddress 192.168.1.1 -Action Allow
netstat -ano | findstr :514

sudo netplan try
sudo apt install -y open-vm-tools

docker compose up -d
docker compose logs -f graylog

config log syslogd setting
    set status enable
    set server "192.168.1.10"
    set mode udp
    set port 514
end

esxcli system syslog config set --loghost='udp://192.168.1.10:514'
esxcli system syslog reload
esxcli network firewall ruleset set --ruleset-id=syslog --enabled=true
esxcli network firewall refresh

sudo tee /etc/rsyslog.d/90-forward.conf
sudo rsyslogd -N1
sudo systemctl restart rsyslog

sudo ufw allow from 192.168.1.1 to any port 514 proto udp
sudo ufw allow from 192.168.1.1 to any port 514 proto tcp
sudo ufw status numbered

GB/day = EPS x avg_bytes x 86400 / 1e9
total GB = GB/day x retention_days

timedatectl
chronyc tracking
sudo timedatectl set-timezone UTC

sudo ss -lunp | grep 514
sudo tcpdump -ni any port 514
sudo ufw status
sudo rsyslogd -N1