Rants about Linux, technology, and science
Overview This howto outlines the procedures for creating a bootable version of Hirens on a USB drive using Linux. The problem arises when attempting to create the the bootable USB using the traditional (and generally reliable) isohybrid + dd approach. There is one fine which needs to be renamed, and in order to do that, Read More …
Use this nifty block of code: ip
This simple Linux command one-liner will give you the process name, PID, and memory usage in kb: for file in /proc/*/status ; do awk ‘/^Pid|VmRSS|Name/{printf $2 ” ” $3}END{ print “”}’ $file; done | sort -k 3 -n -r | less Produces something like the following: R 19173 8206748 kB R 19305 7097212 kB clamd Read More …
In Linux, there is a relatively simple way to track memory and swap usage by process. First look to the directory “/procs”. Here you will see a list of subdirectories named by running process ids (PIDs). Each subdirectory contains files and other directories that contain useful information about that process. For the metrics we want, Read More …
To delete all files in the current directory (and all subdirectories) based on age (in this case, 7 days), you can use the following: find `pwd -P` -mtime +7 -ctime +7 | xargs -I {} bash -c ‘if [ ! -d {} ] ; then \ echo {}; fi’ | xargs -I {} rm -f Read More …
Swedish Snus has been studied by the Swedish and British medical establishments and is believed to be between 90-99% less harmful than cigarettes. There is no evidence that it causes oral cancer, or contributes to heart disease. The Swedish medical establishment has already endorsed it as a form of “harm reduction”, as has the Royal Read More …
Overview Google search engine indexing can be facilitated through the creation of a sitemap. Once the map has been created, you will need to sign-up for Google Webmaster Tools (now called “Search Console) and Google Analytics accounts. Webmaster tools will permit you to submit your site for indexing. Once your web properties are indexed, you Read More …
Back in December 2014, I wrote a post on Let’s Encrypt – a TLS Certificate startup that plans to offer free 3rd-party certificates to anyone that owns a domain name. At that time Let’s Encrypt had set a target release date of “Summer 2015”. Let’s Encrypt recently moved their launch back with the following tentative Read More …
Back in January 2013 I wrote an independent review and test of Mackeeper. In that review, I noted that my tests showed it did NOT do what it claimed, caused operating system damage, and was generally, just a colossal ripoff. Now at last we have “official” confirmation of all of the above. So much so Read More …
Just in case you have ever wondered how online reviews of a product or service can be so different from actual consumer experience, let me fill you in – they are mostly bogus. Indeed, as this 2014 story about a Yelp study of online reviews illustrates, it is estimated that about 30% of online reviews Read More …