Test mode

• visudo
• nginx -t
• php-fpm7.4 -t
• sshd -T, ssh -t
• crontab -e
• dnsmasq --test
• fail2ban-client -t
• ansible-playbook --check foo.yml
• terraform validate and terraform fmt -check
• apt upgrade --dry-run

Related terms

• test command
• --dry-run
• view
• vipw
• validate (Ansible)
• ping -t

See also

• Test mode: nginx -t, sshd -T, crontab -e, visudo, Named-checkconf, dnsmasq --test, validate: