https://old.andunix.net/ 2026-06-03T23:53:16+00:00 https://old.andunix.net/ https://old.andunix.net/_media/favicon.ico text/html 2014-11-20T08:13:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/generate_key Generate a Test Key openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout testkey.key -out testkey.crt Informations about the used arguments from the OpenSSL man page: * req: PKCS#10 certificate request and certificate generating utility. * -x509: this option outputs a self signed certificate instead of a certificate request. This is typically used to generate a test certificate or a self signed root CA. The extensions added to the certificate (if any) are specified in the configurati… text/html 2013-02-18T14:27:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/print_all_certificates_in_a_file Print all certificates in a file This command is especially helpful if you want to use Tomcat-/Java-Keystore-Certificates with the Apache webserver. Use the -print_certs to print all the certificates and then cut the file and store each certificate in a single file. text/html 2010-04-21T08:17:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/blog/2010/memory_usage_solaris_container_zone Memory Usage of a Solaris Container (Zone) Last week one of my servers ran out of RAM and Swap. Shame on me for not monitoring that, but it's now. As the server is running several zones, my first question was: Which zone is eating up my RAM? So, here are the commands I used. text/html 2014-04-22T11:34:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/code/eclipse/java_vm Specify Java VM for Eclipse To let Eclipse use the Java VM from /opt/jdk/bin/java add these two lines to the eclipse.ini in the Eclipse installation directory: -vm /opt/jdk/bin/java -vmjava Source: Eclipsepedia: eclipse.ini - Specifying the JVM eclipse java settings text/html 2015-01-29T09:15:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/print_key Print Information about a Key openssl x509 -inform DER -in testkey.cer -noout -text Informations about the used arguments from the OpenSSL man page: * x509: Certificate display and signing utility. * -inform DER: This specifies the input format normally the command will expect an X509 certificate but this can change if other options such as -req are present. The DER format is the DER encoding of the certificate and PEM is the base64 encoding of the DER encoding with header and footer lines … text/html 2014-01-27T14:38:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/blog/2014/simulating_slow_network_connections_with_trickle Simulating slow network connections with trickle You can limit the downlink of a Firefox browser to 512 KB/s with this command: trickle -d 512 /usr/bin/firefox -no-remote -P test More informations can be found on these pages: * trickle Homepage * Trickle in the Ubunutuuser Wiki (german) text/html 2015-12-09T07:36:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/print_certificate Print Information about a Certificate openssl x509 -in testkey.crt -noout -text Informations about the used arguments from the OpenSSL man page: * x509: Certificate display and signing utility. * -in testkey.crt: This specifies the input filename to read a certificate from or standard input if this option is not specified. text/html 2014-04-28T08:07:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://old.andunix.net/info/cryptography/openssl/debug_server_certificate_from_client Debug Server Certificate from Client Credit for this example goes to “ Checking A Remote Certificate Chain With OpenSSL” from langui.sh. openssl s_client -showcerts -connect www.andunix.net:443 Informations about the used arguments from the OpenSSL man page: * s_client: SSL/TLS client program * -showcerts: display the whole server certificate chain: normally only the server certificate itself is displayed.