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How do I write a correct micro-benchmark in Java?
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Tips about writing micro benchmarks from the creators of Java HotSpot:
Rule 0: Read a reputable paper on JVMs and micro-benchmarking. A good one is Brian Goetz, 2005. Do not expect too much from micro-benchmarks; they measure only a limited range of JVM perfor...
ssl_error_rx_record_too_long and Apache SSL [closed]
...ight on the money for me. It suggested changing the virtual host tag, ie, from <VirtualHost myserver.example.com:443> to <VirtualHost _default_:443>
Error code: ssl_error_rx_record_too_long
This usually means the implementation of SSL on your server is not correct. The error is...
Change default text in input type=“file”?
...e of label for input.
<div>
<label for="files" class="btn">Select Image</label>
<input id="files" style="visibility:hidden;" type="file">
</div>
Below is the code to fetch name of the uploaded file
$("#files").change(function() {
filename = this.files[...
Git Push Error: insufficient permission for adding an object to repository database
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For Ubuntu (or any Linux)
From project root,
cd .git/objects
ls -al
sudo chown -R yourname:yourgroup *
You can tell what yourname and yourgroup should be by looking at the permissions on the majority of the output from that ls -al command
Note: re...
How to sort an IEnumerable
...r
var result = from s in myEnumerable
orderby s
select s;
or (ignoring case)
var result = myEnumerable.OrderBy(s => s,
StringComparer.CurrentCultureIgnoreCase);
Note that, as is usual with LINQ, this creates a new IEnumerable<T&...
MongoDB Show all contents from all collections
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Step 1: See all your databases:
show dbs
Step 2: Select the database
use your_database_name
Step 3: Show the collections
show collections
This will list all the collections in your selected database.
Step 4: See all the data
db.collection_name.find()
or
db.colle...
Check whether a cell contains a substring
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might be worth it to note that this i case insensitive, and if you want to match case, you should use FIND() in place of SEARCH()
– Code Jockey
Sep 11 '14 at 15:19
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How can I find out the total physical memory (RAM) of my linux box suitable to be parsed by a shell
...on your use case, you might also want to know if the 8G in the system come from 2x4GB sticks or 4x2GB sticks.
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How to create cron job using PHP?
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Type the following in the linux/ubuntu terminal
crontab -e
select an editor (sometime it asks for the editor)
and this to run for every minute
* * * * * /usr/bin/php path/to/cron.php &> /dev/null
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Get the date (a day before current time) in Bash
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if you have GNU date and i understood you correctly
$ date +%Y:%m:%d -d "yesterday"
2009:11:09
or
$ date +%Y:%m:%d -d "1 day ago"
2009:11:09
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