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Increase the Tomcat Upload Limit

Anonymous (anonymous@undisclosed.example.com) — 2017-01-04T09:33:36+00:00

Increase the Tomcat Upload Limit The “manager”-App of the Tomcats has a limit of 50MiB. This limit is defined in the file WEB-INF/web.xml within the “manager”-App:

52428800

Cleanup Packages

Anonymous (anonymous@undisclosed.example.com) — 2014-04-28T09:01:22+00:00

Cleanup Packages Purge uninstalled Packages If a package is removed, it is only uninstalled, but the configuration remains on the system. This is a good thing, as you are able to reinstall the package and have it configured with the old configuration. But if you want to cleanup this old stuff, you can ge a list of uninstalled (but not purged) packages with this command:

SSH

Anonymous (anonymous@undisclosed.example.com) — 2015-11-30T12:09:18+00:00

SSH SSH with Public Key Authentication only /etc/ssh/sshd_config Make sure that your SSH config file (sshd_config) contains these settings: PubkeyAuthentication yes PasswordAuthentication no If you changed the config, make sure to restart sshd to activate ist:

Generate a Test Key

Anonymous (anonymous@undisclosed.example.com) — 2014-11-20T08:13:01+00:00

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…

DynDNS Updates without a Client

Anonymous (anonymous@undisclosed.example.com) — 2013-02-04T22:17:34+00:00

DynDNS Updates without a Client My new hosting provide Strato offers DynDNS. I was searching for a DynDNS client for my OpenSolaris Home Server, but a small bash script does the job as good as any other client. #! /bin/bash . ${HOME}/.dyndns.cfg DOMAINS=$(cat ${HOME}/.dyndns.domains) echo "$(date '+%Y-%m-%d %H:%M') $(basename $0)" for domain in ${DOMAINS}; do echo -n " ${domain} - " curl --silent --show-error --insecure --user ${LOGIN} "${UPDATE_URL}?hostname=${domain}" d…

WiFi Config QR-Code

Anonymous (anonymous@undisclosed.example.com) — 2016-07-14T06:40:34+00:00

WiFi Config QR-Code To generate a qr-code for a wifi config, you must encode the following URL in the qr-code: WIFI:S:;T:;P:;; If the network is hidden, then add H:true;: WIFI:S:;T:;P:;H:true;; You can try it here:

Oracle: SPFile and PFiles

Anonymous (anonymous@undisclosed.example.com) — 2013-03-01T20:36:05+00:00

Oracle: SPFile and PFiles Oracle reads its parameters from a file called “SPFile”. You can't change it directly as it's a binary file. Additionally, Oracle can read the parameters from “PFiles”, which are regular text files. Create PFile To export the SPFiles to a PFile, just enter the following in SQLplus:

VBoxManage (The VirtualBox CLI)

Anonymous (anonymous@undisclosed.example.com) — 2014-02-22T13:16:38+00:00

VBoxManage (The VirtualBox CLI) This is a online reference of the output of VBoxManage without options. Oracle VM VirtualBox Command Line Management Interface Version 4.2.16 (C) 2005-2013 Oracle Corporation All rights reserved. Usage: VBoxManage []

Notes for the Solaris 10 System Administration Exam (CX-310-200 & -202)

Anonymous (anonymous@undisclosed.example.com) — 2013-02-04T22:17:36+00:00

Notes for the Solaris 10 System Administration Exam (CX-310-200 & -202) I'm preparing myself for the two exams to achieve the Sun Certified System Administrator (SCSA) certification. This are my notes taken while studying the preparation books. Managing File Systems List Devices To list the system's devices, you can use the following commands:

/etc/path_to_inst

Anonymous (anonymous@undisclosed.example.com) — 2013-02-04T22:17:36+00:00

/etc/path_to_inst * path_to_inst(4) The file /etc/path_to_inst maps physical device paths to driver name and driver instance number. Example: e1000g0 "/pci@0/pci@0/pci@1/pci@0/pci@2/network@0" 0 "e1000g" solaris config device

Disable Core Dumps

Anonymous (anonymous@undisclosed.example.com) — 2014-05-16T06:36:00+00:00

Disable Core Dumps To disable core dumps create a file /etc/security/limits.d/no_core_dumps with the content * hard core 0: echo '* hard core 0' > /etc/security/limits.d/no_core_dumps Based on the “Nix Craft” article Linux Disable Core Dumps. linux sysadmin admin config

/etc

Anonymous (anonymous@undisclosed.example.com) — 2013-02-04T22:17:36+00:00

/etc This is a collection of descriptions of Solaris config files (in the /etc directory). etc index

Set the Timezone on Debian

Anonymous (anonymous@undisclosed.example.com) — 2013-02-04T22:17:38+00:00

Set the Timezone on Debian Just run the following command as root (use su or sudo): dpkg-reconfigure tzdata sysadmin linux debian timezone configure

localeadm

Anonymous (anonymous@undisclosed.example.com) — 2013-03-01T20:58:12+00:00

localeadm The localeadm utility queries and configures Solaris locales through a command line interface. * man page: localeadm(1M) Preparation Check your Solaris Release with cat /etc/release and get a matching DVD or ISO image. If you're using an ISO image, you have to mount it (insert your path in the first line.