On RHEL or CentOS 5.3 it is possible that a noticed default gateway is ignored. In this case the routing table doesn't contain any appropriate entry... 1# netstat -r|grep default ...even if the gateway was noticed both in the main network configuration... 1# cat /etc/sysconfig/network 2... 3GATEWAY=10.24.36.1 ...and …

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Many administrators or IT enthusiasts still might know Common Desktop Environment (CDE) from old UNIX days. Introduced in 1993, it was Unix's standard desktop for HP-UX, IBM AIX, Sun Solaris and Tru64 for more than 10 years. Even if Solaris dropped its CDE support 3 years ago, the old desktop is still used in HP-UX, …

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Red Hat Network Satellite and SUSE Manager are two management suites for the Linux enterprise distros Red Hat Enterprise Linux and SUSE Linux Enterprise Server. At first sight these products look very similar to each other and there are also technical analogies because the products are based on the same core code: …

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nslookup and ifconfig are two well-known tools for configuration the network of Unix/Linux hosts and checking whether DNS is working properly. ifconfig was part of the 4.2BSD distribution in 1983 for the first time and quickly became the standard tool for network configuration - even commerical Unices like Solaris or …

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. Meanwhile there are plenty of operating systems available for the Raspberry Pi - including an ARM version of the source-based Linux distro CRUX. So if you like handcrafting or think Raspbian is "too mainstream", you can have a lot of fun with a SD card with at least 1 GB of memory and a pot of coffee. 😉 Partitions …

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It's doubtless that Ubuntu is one of the most innovative Linux distributions - it made Linux desktops becoming more user-friendly and - thanks to this - raised the acceptance for end users in the last years. Currently the gossip factory is working overtime again - some reliable sources announced that some big strategy …

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If you install and configure a Postfix mail server for relaying mails using an external smarthost you might be puzzled about the following error message: 1Mar 19 17:00:22 hostname01 postfix/smtp[2003]: warning: SASL authentication failure: No worthy mechs found The reason for this issue can be really trivial - in my …

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Hint: The following issue has been fixed by a RHEL / CentOS patch (util-linux-ng) - just update your system! If you want to install Open Monitoring Distribution on RHEL or CentOS 6.4, you might have the problem that creating sites isn't working as expected: 1# omd create test 2Adding /omd/sites/test/tmp to /etc/fstab. …

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After 6 months of developing, openSUSE 12.3 was released today. Time to have a look at the roots. openSUSE is based on the former S.u.S.E. Linux - S.u.S.E stood for the german company name (Gesellschaft für Software- und System-Entwicklung GmbH). The first official S.u.S.E. version 4.2 was released 1996 and came with …

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Recently I had problems with installing Oracle 11gR2 Express Edition on CentOS 6.4. The installation of the RPM package worked but the database configuration crash with the following error: 1# service oracle-xe configure 2... 3"Database Configuration failed. Look into /u01/app/oracle/product/11.2.0/xe/config/log for …

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