Assela Pathirana

Random musings on various topics: Climate and water security, Small Island Developing States (SIDS), IT tools, Computer programming and Web-Applications, Citizen Science, ... Views are personal!

New Section: Hydrology & Meteorology AtmosphericPlot CPC Rainfall Estimates, CPC Rainfall Estimates for Sri Lanka, GFAS Rainfall Estimates, GFAS Rainfall Estimates for Sri Lanka, etc. Check here., Checking and Understanding Permissions Access permissions of every file and folder in a UNIX system is controlled by a system based on two identification numbers: user-identification number (UID) and group identification number (UID). Every file or folder should belong to a UID and GID. In practice is it hard to remember these numbers, so the accepted way is to map a user-name and a group-name to each number. In a typical stand-aloone, UNIX computer, all UIDs along with these mappings are listed in the UNIX file /etc/passwd. Read more ...

What is new A Productive Desktop Environment for Scientists and Engineers - Part I Over the years of computer use for my work, I have settled down for certain practices that make my tasks a bit easier. Whether I am analyzing data, rigging-up a crude model, editing computer programs, writing a paper, creating a presentation or trying to keep my things organized. (Here, 'things' are strictly limited to 'things' that are stored in computer storage media. Anyone who has been to my office know the situation on other 'things'). In these pages I attempt to go through my 'tools of the trade' with the hope that someone in a similar situation will find them to be useful. Read more ...

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