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Check number of arguments passed to a Bash script

I would like my Bash script to print an error message if the required argument count is not met. 10 Answers ...
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What will happen if I modify a Python script while it's running?

Imagine a python script that will take a long time to run, what will happen if I modify it while it's running? Will the result be different? ...
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How do I create a crontab through a script

I need to add a cron job thru a script I run to set up a server. I am currently using Ubuntu. I can use crontab -e but that will open an editor to edit the current crontab. I want to do this programmatically. ...
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Redirect from an HTML page

...ki/Meta_refresh. So it is reccomended to use server redirect instead. JavaScript redirects may not work on all the mobile phones as JavaScript might be disabled. – NinethSense Jul 30 '12 at 6:14 ...
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Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie

...groupingView ----addButton During device rotation the view controller is alerted via the UIPopoverViewControllerDelegate call popoverController:willRepositionPopoverToRect:inView: - (void)popoverController:(UIPopoverController *)popoverController willRepositionPopoverToRect:(inout CGRect *)rect i...
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Preview an image before it is uploaded

...ng } } $("#imgInp").change(function() { readURL(this); }); <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <form runat="server"> <input type='file' id="imgInp" /> <img id="blah" src="#" alt="your image" /> &lt...
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TypeError: $.ajax(…) is not a function?

...l-version of jquery and not some slim version. I was using the jquery cdn-script link that comes with jquery. The problem is this one by default is slim.jquery.js which doesn't have the ajax function in it. So, if you're using (copy-pasted from Bootstrap website) slim version jquery script link, us...
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PowerShell script to return versions of .NET Framework on a machine?

What would a PowerShell script be to return versions of the .NET Framework on a machine? 16 Answers ...
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Export database schema into SQL file

... You can generate scripts to a file via SQL Server Management Studio, here are the steps: Right click the database you want to generate scripts for (not the table) and select tasks - generate scripts Next, select the requested table/tables,...
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What does $$ mean in the shell?

... (e.g., /tmp). It's easy to litter /tmp with symlinks that will cause your script to write somewhere undesirable. mktemp is much better. – Chris Jester-Young Sep 17 '08 at 0:11 5 ...