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How to get the instance id from within an ec2 instance?
... of a more advanced use (retrieve instance ID as well as availability zone and region, etc.):
EC2_INSTANCE_ID="`wget -q -O - http://169.254.169.254/latest/meta-data/instance-id || die \"wget instance-id has failed: $?\"`"
test -n "$EC2_INSTANCE_ID" || die 'cannot obtain instance-id'
EC2_AVAIL_ZONE=...
javascript check for not null
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Try to check with 'null'
if ('null' != val)
For an explanation of when and why this works, see the details below.
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Why do python lists have pop() but not push()
...ot called list.push given that there's already a list.pop that removes and returns the last element (that indexed at -1) and list.append semantic is consistent with that use?
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Exception thrown in NSOrderedSet generated accessors
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I reproduced your setup both with your data model and one of my own with different names. I got the same error in both cases.
Looks like a bug in Apple's autogenerated code.
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Finding Variable Type in JavaScript
...d]"
With that you would not have to distinguish between primitive values and objects.
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How to set default browser window size in Protractor/WebdriverJS
... Operation not supported when using remote debugging Some WebDriver
commands (e.g. resizing the browser window) require a Chrome extension
to be loaded into the browser. ChromeDriver normally loads this
"automation extension" every time it launches a new Chrome session.
However ChromeDri...
How to get JQuery.trigger('click'); to initiate a mouse click
I'm having a hard time understand how to simulate a mouse click using JQuery. Can someone please inform me as to what i'm doing wrong.
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How to upgrade Git on Windows to the latest version?
...version 1.7.9.mysysgit.0. I downloaded the new version from the Git site and installed through the normal Git installer EXE.
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Amazon EC2, mysql aborting start because InnoDB: mmap (x bytes) failed; errno 12
.... Since Micro instances have only 613MB of memory, MySQL crashed every now and then. After a long search about MySQL, Micro Instance and Memory Managment I found out there is no default SWAP space for Micro instance. So if you want to avoid the crash you may need to setup a swap space for your micro...
Getting “bytes.Buffer does not implement io.Writer” error message
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I ran into this and would be interested in learning why that is the case. I'm pretty unfamiliar with pointers in Go.
– hourback
Oct 14 '14 at 20:00
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