Hello there folks! I have been using [BASH](http://en.wikipedia.org/wiki/Bash_%28Unix_shell%29) for quite a long time. Yet I feel like there is a lot that I don’t know. The irony is that I am doing the BASH and Linux Basics training for new hires at my firm. I am not that bad, you see. It is just that there is so much to know. And I am never happy with what I know. ...
Hey if you have worked on Linux then you have interacted with bash. Maybe not. But it is mostly likely that your default shell is bash. I’m not surprised. I’m among the few people on this planet who regularly interacts with cshell also. Thanks to the kind of work I do. One great feature of bash that I miss in cshell is: Functions. Surprised? Cshell doesn’t support functions. It doesn’t have any concept of function. If you wanted to simulate a function, you have to write another cshell script that does what your function would do and define an alias that calls it. ...
I work on CSHELL these days. Probably the most unpopular shell today. Anyone would recommend not to use it. Because of the absurdness of its syntax and quoting. For an example: Top 10 reasons to avoid using CShell My intention was to write a generic wrapper script that I could use to invoke another script that supposedly attempts to update a database and in the unlikely event of failing to do so, the wrapper would wait for a while and retry again. I thought of this approach as we had been facing some database locking issues and some data that was supposed to updated wasn’t getting updated. And this was causing even more problems for us. Since some of our systems rely on this data. By the way, to give you an idea of the locking problem, let me tell you, we have one MySQL database, that is updated by several processes running on 7 different boxes. Now you can understand the number of processes trying to access the database at similar intervals. ...