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How to list the size of each file and directory and sort by descending size in Bash?
... first)
ncdu
When I came to this question, I wanted to clean up my file system. The command line tool ncdu is way better suited to this task.
Installation on Ubuntu:
$ sudo apt-get install ncdu
Usage:
Just type ncdu [path] in the command line. After a few seconds for analyzing the path, you ...
How to import an excel file in to a MySQL database
...abase named mydatabase.
Select the relevant cells:
Paste into Mr. Data Converter and select the output as MySQL:
Change the table name and column definitions to fit your requirements in the generated output:
CREATE TABLE sales (
id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
Country VARCHAR...
How does the bitwise complement operator (~ tilde) work?
...numbers are stored in 2's complement form,
the acquired result we have to convert into 2's complement( first perform 1's complement and just add 1 to 1's complement).
all the one will become zeros,except most significant bit 1(which is our sign representation of the number,that means for remaining...
Recursively counting files in a Linux directory
... not actually transfer the files!
I used the -x option to "don't cross filesystem boundaries", which means if you execute it for / and you have external hard disks attached, it will only count the files on the root partition.
...
Received an invalid column length from the bcp client for colid 6
...h match = Regex.Match(ex.Message.ToString(), pattern);
var index = Convert.ToInt32(match.Value) -1;
FieldInfo fi = typeof(SqlBulkCopy).GetField("_sortedColumnMappings", BindingFlags.NonPublic | BindingFlags.Instance);
var sortedColumns = fi.GetValue(bulkCopy);
var it...
Reasons for using the set.seed function
...NA,1000) # initialize the estimate stores
for (i in 1:1000) {
as.numeric(Sys.time())-> t; set.seed((t - floor(t)) * 1e8 -> seed) # set the seed to random seed
y <- rnorm(N, sd = sd) # generate the data
est1[i] <- optim(1, simllh, y = y, Ns = 1000, lower = 0.01)$par
est2[i] <- ...
Sort a Map by values
...
Java 8 offers a new answer: convert the entries into a stream, and use the comparator combinators from Map.Entry:
Stream<Map.Entry<K,V>> sorted =
map.entrySet().stream()
.sorted(Map.Entry.comparingByValue());
This will let you ...
How to migrate/convert from SVN to Mercurial (hg) on windows
...alled as well as the CollabNet Subversion Command-Line Client.
<Enable Convert Extension w/ Tortoise Hg 2>
Many thanks to bgever for pointing out in the comments that with TortoiseHg 2.0, enabling the convert extension is easier than ever. As he says
With TortoiseHG 2.0 this has been ma...
Is it possible to create a File object from InputStream
...
If you do not want to use other library, here is a simple function to convert InputStream to OutputStream.
public static void copyStream(InputStream in, OutputStream out) throws IOException {
byte[] buffer = new byte[1024];
int read;
while ((read = in.read(buffer)) != -1) {
...
Converting many 'if else' statements to a cleaner approach [duplicate]
...
You could have a Converter interface. Then you could create a class for each Mimetype like:
public interface Converter {
public void convertToMp3();
public void convertToOgg();
}
public class MpegConverter implements Converter {
...