Harsh J | Memoirs of a QWERTY Keyboard

Checking if your JRE has the Unlimited-strength Policy Files in place

To use the included 256-bit encryption algorithms within Java, Oracle Java JDK or JRE requires you to download and replace the US_export_policy.jar and local_policy.jar files under your $JAVA_HOME/jre/lib/security/ directory with a variant of these files called JCE Unlimited Strength Jurisdiction Policy Files obtained here.

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GNU egrep does not support the \d shorthand

I learnt this the hard way (and said hello to a large living world of non-standard regex implementations). The GNU grep/egrep documentation page documents all their special backslash character support but \d is not one of them.

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Duplicating a tab in Safari

If you are an Apple Safari user, you may have noticed that it lacks a duplicate tab feature (such as the one in Mozilla Firefox or Google Chrome, when you right click a tab area).

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