[IO.read()][1] is what you&#39;re looking for.  
[File][2] is a subclass of [IO][3], so you may as well just use:

    text = File.read(path)

Can&#39;t get more intuitive than that.

  [1]: http://www.ruby-doc.org/core-2.0/IO.html#method-i-read
  [2]: http://www.ruby-doc.org/core-2.0/File.html
  [3]: http://www.ruby-doc.org/core-2.0/IO.html

What about [`IO.read()`][1]?

Edit: `IO.read()`, as an added bonus, closes the file for you.

  [1]: http://www.ruby-doc.org/core/classes/IO.html#M000883

First result I found when searching.

I wanted to change the mode, which doesn&#39;t seem possible with `IO.read`, unless I&#39;m wrong?

Anyway, you can do this:

```ruby
data = File.open(path,&#39;rb&#39;,&amp;:read)
```

It&#39;s also good for when you want to use any of the other options:

https://ruby-doc.org/core/IO.html#method-c-new

If this is for a double-click:

    window.addEventListener(&quot;dblclick&quot;, function(event) { }, false);

How can I capture a triple-click? This is for a pinned tab in Google Chrome.

How do I listen for triple clicks in JavaScript?

I have a function which outputs many rows of information which I want to format in columns.  The problem is that the width of any particular &quot;cell&quot; (if I may use that term) of data is variable, so piping it to something like awk does not give me what I want.  

The function is &quot;keys&quot; (not that it matters) and I&#39;m trying something like this:

    $ keys | awk &#39;{ print $1&quot;\t\t&quot; $2 }&#39;

but the output (a snippet of it, that is) looks like this:

    &quot;option-y&quot;		yank-pop
    &quot;option-z&quot;		execute-last-named-cmd
    &quot;option-|&quot;		vi-goto-column
    &quot;option-~&quot;		_bash_complete-word
    &quot;option-control-?&quot;		backward-kill-word
    &quot;control-_&quot;		undo
    &quot;control-?&quot;		backward-delete-char


How can I force things to stay in neat columns?  Is this possible with awk, or do I need to use something else?


How can I format the output of a bash command in neat columns

I am sure this is an easy one; I just couldn&#39;t find the answer *immediately* from Google.

I know I could do this (right?):

	text = &quot;&quot;
	File.open(path).each_line do |line|
		text += line
	end

	# Do something with text

But that seems a bit excessive, doesn&#39;t it? Or is that the way one would do it in Ruby?

What&#39;s a reasonable way to read an entire text file as a single string?

I am sure this is an easy one; I just couldn't find the answer immediately from Google.
I know I could do this (right?):
<pre><code class="hljs language-arduino">text = ""
File.open(path).each_line do |line|
	text += line
end

# Do something with text
</code></pre>
But that seems a bit excessive, doesn't it? Or is that the way one would do it in Ruby?

I am doing a project in rails, I would like to know How do I check whether I am running in developer mode  or  production mode in code ?


Thanks

Rails - How do I check developer mode or production mode in code

How can I get yesterday&#39;s date?

maybe:

    @get_time_now    = Time.now.strftime(&#39;%m/%d/%Y&#39;) / 86400 

or

    @get_time_now    = Time.now.strftime(&#39;%m/%d/%Y&#39;) - 1.day

or

    @get_time_now    = Time.now. / 86400 

86400 = 1 day, right? (60 * 60 * 24)

Rails: How I can get yesterday&#39;s date?

Is possible have a git branch dependency, inside mygem.gemspec?

I&#39;m thinking something similar to the following:

    gem.add_runtime_dependency &#39;oauth2&#39;, :git =&gt; &#39;git@github.com:lgs/oauth2.git&#39;

... but it doesn&#39;t work.

Ruby Gemspec Dependency: Is possible have a git branch dependency?

I&#39;ve been looking into some rails admin plugins and came across these:

[https://github.com/gregbell/active_admin][1]

[https://github.com/sferik/rails_admin][2]

[https://github.com/thoughtbot/administrate][3] (EDIT: added later)

Any suggestions as to which one to go with. I would need it to support model associations and file uploads abilities. 


  [1]: https://github.com/gregbell/active_admin
  [2]: https://github.com/sferik/rails_admin
  [3]: https://github.com/thoughtbot/administrate

Rails Admin vs. ActiveAdmin

Right now I&#39;m doing a `split` on a string and assuming that the newline from the user is `\r\n` like so:

    string.split(/\r\n/)

What I&#39;d like to do is split on either `\r\n` or just `\n`.

So how what would the regex be to split on either of those?

Split on different newlines

What is the difference between the [`String#equals`][1] method and the [`String#contentEquals`][2] method?


  [1]: http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#equals%28java.lang.Object%29
  [2]: http://docs.oracle.com/javase/7/docs/api/java/lang/String.html#contentEquals%28java.lang.CharSequence%29

Difference between String#equals and String#contentEquals methods

    var s = &quot;overpopulation&quot;;
    var ar = [];
    ar = s.split();
    alert(ar);

I want to string.split a word into array of characters.

The above code doesn&#39;t seem to work - it returns  &quot;overpopulation&quot;  as Object..

How do i split it into array of characters, if original string doesn&#39;t contain commas and whitespace?

How do I split a string into an array of characters?

In my script I need the **directory** of the file I am working with.  For example, the *file*=**&quot;stuff/backup/file.zip&quot;**. I need a way to get the string &quot;**stuff/backup/**&quot; from the variable `$file`. 



Extract directory from path

I have a string 

    String startDate = &quot;06/27/2007&quot;;

now i have to get Date object. My DateObject should be the same value as of startDate.

I am doing like this
    
    DateFormat df = new SimpleDateFormat(&quot;mm/dd/yyyy&quot;);
    Date startDate = df.parse(startDate);

But the output is in format 

&gt;Jan 27 00:06:00 PST 2007. 

how to convert java string to Date object

I am searching for the shortest way (in code) to initialize list of strings and array of strings, i.e. list/array containing 
&quot;s1&quot;, &quot;s2&quot;, &quot;s3&quot; string elements.



What is the shortest way to initialize List of strings in java?

The following questions are meant for bash and linux only: 

1. Is there a limit on the number of characters in the absolute path name of a file?  
2. Is there a limit on the number of characters for the filename (without extension) only?  

If so, what might these limits be? How can I access them in case they are system specific? 

Limit on file name length in bash

I&#39;d like to read numbers from file into two dimensional array. 

File contents:

 - line containing w, h
 - h lines containing w integers separated with space

For example:

    4 3
    1 2 3 4
    2 3 4 5
    6 7 8 9


How to read numbers from file in Python?

Is there a built-in function for getting the size of a file object in bytes? I see some people do something like this:

    def getSize(fileobject):
        fileobject.seek(0,2) # move the cursor to the end of the file
        size = fileobject.tell()
        return size
    
    file = open(&#39;myfile.bin&#39;, &#39;rb&#39;)
    print getSize(file)
But from my experience with Python, it has a lot of helper functions so I&#39;m guessing maybe there is one built-in.

Getting file size in Python?

1. I need to write a function which when given the path of a folder 
scans the files rooted at that folder. 
2. And then I need to display the directory structure at that folder. 

I know how to do 2 (I am going to use jstree to display it in the browser). 

How to perform file system scanning

Is there a way to open a file for both reading and writing?

As a workaround, I open the file for writing, close it, then open it again for reading. But is there a way to open a file for *both* reading and writing?


How to open a file for both reading and writing?

I&#39;ve got a conditional to check if a certain file exists before proceeding (`./logs/error.log`). If it isn&#39;t found I want to create it. However, will

    File tmp = new File(&quot;logs/error.log&quot;);
    tmp.createNewFile();

also create `logs/` if it doesn&#39;t exist?


Java&#39;s createNewFile() - will it also create directories?

Basically I want to take as input text from a file, remove a line from that file, and send the output back to the same file. Something along these lines if that makes it any clearer.

    grep -v &#39;seg[0-9]\{1,\}\.[0-9]\{1\}&#39; file_name &gt; file_name

however, when I do this I end up with a blank file.
Any thoughts?

How can I use a file in a command and redirect output to the same file without truncating it?

I found this in the Python [documentation for File Objects][1]:

&gt; `flush()` does not necessarily write the file’s data to disk. Use `flush()` followed by [`os.fsync()`][2] to ensure this behavior.

So my question is: what exactly is Python&#39;s `flush` doing? I thought that it forces to write data to the disk, but now I see that it doesn&#39;t. Why? 


  [1]: https://docs.python.org/2/library/stdtypes.html#file.flush
  [2]: https://docs.python.org/2/library/os.html#os.fsync

What exactly is file.flush() doing?

I want to redirect the print to a .txt file using Python. I have a `for` loop, which will `print` the output for each of my .bam file while I want to redirect **all** output to one file. So I tried to put:

    f = open(&#39;output.txt&#39;,&#39;w&#39;)
    sys.stdout = f

at the beginning of my script. However I get nothing in the .txt file.
My script is:

    #!/usr/bin/python
    
    import os,sys
    import subprocess
    import glob
    from os import path
    
    f = open(&#39;output.txt&#39;,&#39;w&#39;)
    sys.stdout = f
    
    path= &#39;/home/xxx/nearline/bamfiles&#39;
    bamfiles = glob.glob(path + &#39;/*.bam&#39;)
    
    for bamfile in bamfiles:
        filename = bamfile.split(&#39;/&#39;)[-1]
        print &#39;Filename:&#39;, filename
        samtoolsin = subprocess.Popen([&quot;/share/bin/samtools/samtools&quot;,&quot;view&quot;,bamfile],
                                      stdout=subprocess.PIPE,bufsize=1)
        linelist= samtoolsin.stdout.readlines()
        print &#39;Readlines finished!&#39;

So what&#39;s the problem? Any other way besides this `sys.stdout`?

I need my result look like:

```none
Filename: ERR001268.bam
Readlines finished!
Mean: 233
SD: 10
Interval is: (213, 252)
```

How to redirect &#39;print&#39; output to a file?

I can find tons of examples but they seem to either rely mostly on Java libraries or just read characters/lines/etc.

I just want to read in some file and get a byte array with scala libraries - can someone help me with that?

Content Type	Original Author	Original Content on Stackoverflow
Question	Dan Tao	View Question on Stackoverflow
Solution 1 - Ruby	Thiago Silveira	View Answer on Stackoverflow
Solution 2 - Ruby	s.m.	View Answer on Stackoverflow
Solution 3 - Ruby	esotericpig	View Answer on Stackoverflow

What's a reasonable way to read an entire text file as a single string?

Ruby Problem Overview

Ruby Solutions

Solution 1 - Ruby

Solution 2 - Ruby

Solution 3 - Ruby

How can I format the output of a bash command in neat columns

How do I listen for triple clicks in JavaScript?

Attributions