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March 2, 2022 – 2:00 pm

Books have been written on the subject of awk and sed. Here’s a small sample of commands I put together over the years that are useful for everyday system administration tasks. Most of these tasks …

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Article Archive for November 2014

Multithreaded Encryption and Compression

November 24, 2014 – 9:13 am
storage barrels cluster hpc

One problem with encryption is it’s a slow and resource-intensive process. While most encryption software lacks multithreading support, it is possible to use the GNU Parallel to take full advantage of modern multi-core CPUs to …

Using truss and nawk to Trace Solaris Processes

November 18, 2014 – 1:54 pm
HP-Greets-IBM-2

Here’s the problem I ran into today on a Solaris 11 SPARC server: an application UI would occasionally freeze for a few second when executing a particular function. Nobody could quite figure out where the …

Filesystem Syncronization with Lsyncd

November 15, 2014 – 3:05 pm
poi002

Lsyncd monitors a local filesystem for changes and mirrors those changes to a filesystem on a remote server. The advantage of lsyncd over rsync is the former’s ability to detect filesystem changes without having to re-scan …