Many a times, one needs to keep an eye on certain aspects of a system. Be it verifying transfer of contents over to a host or scanning log files as they are written to, these tasks need constant supervision. Wouldn’t it be better if there was some automation to accomplish this? Thankfully, there is one.
Most Linux distros have an inbuilt utility known as ‘watch’ which essentially keeps running a particular command, every ‘n’ number of seconds. The watch command is very simple to use.
Recently, I was rendering a video in Openshot. To my inconvenience, the progress bar within the Openshot failed to show any visual indication. Here I quickly fired up a console & navigated to the location where my video file was to be rendered by Openshot. After this, it was simply a matter of running the mundane ‘ls -lhtr’ command using watch. The ‘ls -lhtr’ lists the files by their recent modification times & presents them in human readable size output. I used the following format;
$watch -n 5 ls -lhtr
Here the ‘-n 5’ option tells watch to run the command ‘ls -lhtr’ every five seconds. One can notice the increasing file size of the file which was rendered by Openshot as the command ran at five seconds interval. Thus, I was guaranteed of Openshot doing its work smoothly despite the conked progress bar in GUI.
The ‘watch’ command is regularly used by system administrators to check the output of a log file as it is written to viz. apache access log. Of-course, one can even use the ‘tail -f’ command to check the output of the log file in this scenario. Watch is a nifty tool in any administrators toolbox and its utility is limited by your imagination.
When I began this blog, I did it so just with the intent of teaching the masses. I did it purely out of passion. And now, the hardwork has been paid off yet again with a recognition. Baggout has selected “ShutterTux” amongst the “Top 10 Photography Blogs in India”.
It’s a moment of pride. A motivation to continue doing the good work I do. This award goes to all my faithful readers. Thank you for the unwavering support all along the way. Many thanks to the Baggout team for the honour.
Most of the professional photographers make sure, white’s stay white. Often we are challenged with tricky lighting conditions which make deciding on a white balance difficult. JPEG shooters are more vulnerable since the scope for colour correction is limited in post-production.
However, even if you’re a RAW shooter it is important to get WB close to perfect right in the camera. A bride on her wedding day looking resplendent in her saree would be disappointed if you supply her with photographs wherein her saree colour is way off. It happens quite a lot in wedding photography, purples turn into blue. Since the amateur photographer is lost in other aspects(composition, lighting etc) of the photograph, it(WB) gets easily hood-winked. However, the bride and her family are the first to spot the mistake. In rare cases, they might not complain but you are sure to lose the client for a future photo assignment.
In order to avoid such an unpleasant scenario, one should be careful about the WB during shooting. Often WB is a subjective topic. Some like their pictures to be warmer whereas others opt for the most neutral colours. I fall in the latter category. I do tweak the WB to one other than the prefect when I feel the need for it. Often I proceed with setting the camera’s white balance to a ‘preset’ closer to the lighting condition I am shooting in. When I shoot under mixed lighting conditions, I make sure to get a “Grey Card” reading from my subject. Of-course, I always shoot in RAW. Combination of these two methods give me a head-start when I have the photographs over the computer post shoot. Most often, the WB is spot on or close enough. The little adjustment(if required) is easily handled in post-production.
What do you do when you are bored? When no idea comes to your mind? Then all of a sudden, you think, let’s throw those speed-lights up in the air! Here is what you get after having a few, “heart in your mouth” moments. If your speed-lights or the cute canine is hurt during tossing, do not blame me. 😉
It’s three years! A grand three years in my 365 Project. Never imagined, I would reach so far. It has been a truly magnificent journey, trying to produce a unique photograph each day. What brings further joy to me is, if one perseveres, producing a photograph every day is indeed possible. As I look back, I can see how I am improving as a photographer.
2015 will be an awesome year. I will continue the 365 Project. Thank you for the strong support & hope it continues in 2015. Will work more hard and produce photographs, unimagined and unexplored previously! 🙂
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