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check-certificate(1)	    General Commands Manual	  check-certificate(1)

NAME
       check-certificate -- Checks and verifies	X.509 certificates

SYNOPSIS
       check-certificate ca_certificate_file certificate_file [...]
			 [-C crl_file |	--crl crl_file]
			 [-n | --no-view-certificate]
       check-certificate [-h | --help]

DESCRIPTION
       check-certificate  verifies  X.509 certificates against a Certification
       Authority (CA) certificate and optionally a Certificate Revocation List
       (CRL). The verification is made using OpenSSL, and if available	GnuTSL
       and NSS,	to ensure the certificates are working properly	with all three
       TLS implementations.

ARGUMENTS
       The following options are available:

       ca_certificate_file
	       Specifies the CA	certificate file to verify certificates.

       certificate_file	[...]
	       Specifies one ore more certificate files	to be verified.

       -C crl_file | --crl crl_file
	       Specifies a CRL file.

       -n | --no-view-certificate
	       Do not display a	certificate before verification.

       -h | --help
	       Prints command-line parameters.

EXAMPLES
       check-certificate My-CA-Certificate.crt My-Server-Certificate.crt

       check-certificate       --crl	   CRL.crl	 My-CA-Certificate.crt
	       My-Server-Certificate.crt

       check-certificate   /usr/share/ca-certificates/mozilla/ISRG_Root_X1.crt
	       www.nntb.no.crt

       check-certificate --help

       check-certificate -h

check-certificate	       November	28, 2025	  check-certificate(1)

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