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Essentially a replacement for this:\n\n```\n❯ openssl s_client \\\n  -connect github.com:443 \\\n  -servername github.com \\\n  -showcerts \u003c /dev/null 2\u003e/dev/null \\\n  | openssl x509 \\\n    -noout \\\n    -issuer \\\n    -subject \\\n    -ext subjectAltName \\\n    -startdate \\\n    -enddate\n\nissuer=C=GB, ST=Greater Manchester, L=Salford, O=Sectigo Limited, CN=Sectigo ECC Domain Validation Secure Server CA\nsubject=CN=github.com\nX509v3 Subject Alternative Name:\n    DNS:github.com, DNS:www.github.com\nnotBefore=Mar  7 00:00:00 2024 GMT\nnotAfter=Mar  7 23:59:59 2025 GMT\n```\n\n## Install\n\nUsing Homebrew:\n\n    brew install stuarthicks/brews/tls_cert_info\n\nUsing Go:\n\n    go install github.com/stuarthicks/tls_cert_info@latest\n\n## Usage\n\n```\n❯ tls_cert_info -h\n\nUsage of tls_cert_info:\n  -domain string\n        Domain to connect to\n  -port string\n        Override port to connect to (default \"443\")\n  -sni string\n        Override SNI domain (default matches -domain)\n```\n\nExample:\n\n```\n❯ tls_cert_info -domain github.com\n\nIssuer:\t\tSectigo Limited\nCommon Name:\tgithub.com\nSubject Alternative Names:\n\tgithub.com\n\twww.github.com\nStart Date:\t2024-03-07\nEnd Date:\t2025-03-07\nRemaining Days:\t292\n```\n\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstuarthicks%2Ftls_cert_info","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fstuarthicks%2Ftls_cert_info","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fstuarthicks%2Ftls_cert_info/lists"}