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How to create a bash script to check the SSH connection?
...
You can check this with the return-value ssh gives you:
$ ssh -q user@downhost exit
$ echo $?
255
$ ssh -q user@uphost exit
$ echo $?
0
EDIT: Another approach would be to use nmap (you won't need to have keys or login-stuff):
$ a=`nmap uphost -PN -p ssh | grep open`
$ b=`nmap downhost -PN -...
Disable Drag and Drop on HTML elements?
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Try preventing default on mousedown event:
<div onmousedown="event.preventDefault ? event.preventDefault() : event.returnValue = false">asd</div>
or
<div onmousedown="return false">asd</div>
...
How can I log the stdout of a process started by start-stop-daemon?
...better solution than the one of @ypocat mainly because shutting the daemon down again by replacing --start with --stop actually works.
– aef
May 15 '14 at 14:16
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Android Min SDK Version vs. Target SDK Version
...ribute set, the application says that it is able to run on older versions (down to minSdkVersion), but was explicitly tested to work with the version specified here. Specifying this target version allows the platform to disable compatibility settings that are not required for the target version (whi...
Handling colon in element ID with jQuery
...what you should use.
Explanation:
Apart from the speed gain (see further down), it is easier to handle.
Example: Say you have a function
function doStuff(id){
var jEle = $("#" + id); //is not safe, since id might be "foo:bar:baz" and thus fail.
//You would first have to look f...
What's the difference between jquery.js and jquery.min.js?
...n functions such as this - function(i,s,o,g,r,a,m). Another way of cutting down on the number of characters, is it ?
– Utsav T
Aug 18 '15 at 10:07
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Unable to show a Git tree in terminal
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I would suggest anyone to write down the full command
git log --all --decorate --oneline --graph
rather than create an alias.
It's good to get the commands into your head, so you know it by heart
i.e. do not depend on aliases when you change machines...
Work on a remote project with Eclipse via SSH
...
For this case you can use ptp eclipse https://eclipse.org/ptp/ for source browsing and building.
You can use this pluging to debug your application
http://marketplace.eclipse.org/content/direct-remote-c-debugging
...
How to mock an import
... patch dict which is a fake
# module that points at the next level down
patch_dict['.'.join(module_splits[:-1])] = fake_module(
**{module_splits[-1]: patch_dict['.'.join(module_splits)]}
)
module_splits = module_splits[:-1]
return patch_dict
with moc...
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
... DNS server.
Port number is missing or wrong in JDBC URL.
DB server is down.
DB server doesn't accept TCP/IP connections.
DB server has run out of connections.
Something in between Java and DB is blocking connections, e.g. a firewall or proxy.
To solve the one or the other, foll...