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Validating parameters to a Bash script

...ant script as far as I can tell; it doesn't use any bashisms, which is actually important because /bin/sh on Ubuntu is actually dash these days, not bash. share | improve this answer | ...
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How to check if an NSDictionary or NSMutableDictionary contains a key?

... Don't you want to use valueForKey, as that would call objectForKey if necessary? – Raffi Khatchadourian Dec 21 '11 at 0:39 6 ...
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Mvn install or Mvn package

...ow if I modified any java files then do I need to do Run as -> Mvn install or Mvn package ? 8 Answers ...
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$(document).ready equivalent without jQuery

...ent if ( document.addEventListener ) { // Use the handy event callback document.addEventListener( "DOMContentLoaded", function(){ document.removeEventListener( "DOMContentLoaded", arguments.callee, false ); jQuery.ready(); }, false ); // If IE...
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What is the _snowman param in Ruby on Rails 3 forms for?

...net Explorer (5, 6, 7 and 8) to encode its parameters as unicode. Specifically, this bug can be triggered if the user switches the browser's encoding to Latin-1. To understand why a user would decide to do something seemingly so crazy, check out this google search. Once the user has put the web-sit...
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What are the special dollar sign shell variables?

... $3, ... are the positional parameters. "$@" is an array-like construct of all positional parameters, {$1, $2, $3 ...}. "$*" is the IFS expansion of all positional parameters, $1 $2 $3 .... $# is the number of positional parameters. $- current options set for the shell. $$ pid of the current shell (...
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How to upgrade Eclipse for Java EE Developers?

Is there any non-painful way to upgrade an Eclipse installation? I have tried browsing the eclipse site but I cannot find an useful description. ...
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Request format is unrecognized for URL unexpectedly ending in

... Found a solution on this website All you need is to add the following to your web.config <configuration> <system.web> <webServices> <protocols> <add name="HttpGet"/> <add name="HttpPost"/> ...
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Draw line in UIView

...re are no errors - I wrote it without Xcode): UIView *lineView = [[UIView alloc] initWithFrame:CGRectMake(0, 200, self.view.bounds.size.width, 1)]; lineView.backgroundColor = [UIColor blackColor]; [self.view addSubview:lineView]; [lineView release]; // You might also keep a reference to this view ...
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commands not found on zsh

...ll ( zsh ) instead of the default bash, and something wrong happen so that all commands who used to work are no longer recognized: ...