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How can I do division with variables in a Linux shell?

... It has to be noted somewhere on this page that most (if not all) GNU/Linux shells only perform integer operations. – Skippy le Grand Gourou Sep 19 '14 at 12:47 ...
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jQuery hasAttr checking to see if there is an attribute on an element [duplicate]

...is).attr('name') ) != 'undefined' ) { // ... } since undefined can actually be redefined using a simple: undefined = 1 – Shane Tomlinson Nov 22 '10 at 12:34 7 ...
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Why doesn't C have unsigned floats?

... answer to that is that there was no unsigned float standard defined originally. Since languages like to be backwards compatible, even if it were added languages couldn't make use of it. To see the floating point spec you should look at the IEEE standard 754 Floating-Point. You can get around not...
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How to make CSS width to fill parent?

... EDIT: Those three different elements all have different rendering rules. So for: table#bar you need to set the width to 100% otherwise it will be only be as wide as it determines it needs to be. However, if the table rows total width is greater than the width ...
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Set custom HTML5 required field validation message

... + '" is invalid!'; } }); More details defaultText is displayed initially emptyText is displayed when the input is empty (was cleared) invalidText is displayed when the input is marked as invalid by the browser (for example when it's not a valid email address) You can either assign a string ...
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How can I create an Asynchronous function in Javascript?

... You cannot make a truly custom asynchronous function. You'll eventually have to leverage on a technology provided natively, such as: setInterval setTimeout requestAnimationFrame XMLHttpRequest WebSocket Worker Some HTML5 APIs such as the File API, Web Database API Technologies that support...
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Remove refs/original/heads/master from git repo after filter-branch --tree-filter?

... as a backup, in case you mess up your filter-branch. Believe me, it's a really good idea. Once you've inspected the results, and you're very confident that you have what you want, you can remove the backed up ref: git update-ref -d refs/original/refs/heads/master or if you did this to many refs...
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Html List tag not working in android textview. what can i do?

... see in the Html class source code, Html.fromHtml(String) does not support all HTML tags. In this very case, <ul> and <li> are not supported. From the source code I have built a list of allowed HTML tags: br p div em b strong cite dfn i big small font blockquote tt monospace a u sup s...
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Why am I getting error for apple-touch-icon-precomposed.png

...means the configured web document-root directory, e.g. in Apache 2.4 it usually /var/www/htdocs – Hgehlhausen Dec 14 '16 at 19:40 add a comment  |  ...
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Check to see if python script is running

...stem is using domain sockets: import socket import sys import time def get_lock(process_name): # Without holding a reference to our socket somewhere it gets garbage # collected when the function exits get_lock._lock_socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM) try: ...