You should have a look on the `-regextype` argument of `find`, see [manpage][1]:

          -regextype type
              Changes the regular expression syntax understood by -regex and -iregex 
              tests which occur later on the command line.  Currently-implemented  
              types  are  emacs (this is the default), posix-awk, posix-basic, 
              posix-egrep and posix-extended. 

I guess the `emacs` type doesn&#39;t support the `[[:digit:]]` construct. I tried it with `posix-extended` and it worked as expected:

    find -regextype posix-extended -regex &#39;.*[1234567890]&#39;
    find -regextype posix-extended -regex &#39;.*[[:digit:]]&#39;



  [1]: http://manpages.ubuntu.com/manpages/maverick/man1/find.1.html

Regular expressions with character classes (e.g. `[[:digit:]]`) are not supported in the default regular expression syntax used by `find`. You need to specify a different regex type such as `posix-extended` in order to use them.

Take a look at GNU Find&#39;s Regular Expression [documentation][1] which shows you all the regex types and what they support.

[1]: http://www.gnu.org/software/findutils/manual/html_mono/find.html#Regular-Expressions

Note that `-regex` depends on whole path. 


     -regex pattern
                  File name matches regular expression pattern.  
                  This is a match on the whole path, not a search.

You don&#39;t actually have to use `-regex` for what you are doing. 

    find . -iname &quot;*[0-9]&quot;

Well, you may try this `&#39;.*[0-9]&#39;`

Basically I have in my MainViewModel.cs:

    ObservableCollection&lt;TabItem&gt; MyTabs { get; private set; }

However, I need to somehow be able to not only create the tabs, but have the tabs content be loaded and linked to their appropriate viewmodels while maintaining MVVM.

Basically, how can I get a usercontrol to be loaded as the content of a tabitem AND have that usercontrol wired up to an appropriate viewmodel. The part that makes this difficult is the ViewModel is not supposed to construct the actual view items, right? Or can it?

Basically, would this be MVVM appropriate:

    UserControl address = new AddressControl();
    NotificationObject vm = new AddressViewModel();
    address.DataContext = vm;
    MyTabs[0] = new TabItem()
    {
        Content = address;
    }

I only ask because well, i&#39;m constructing a View (AddressControl) from within a ViewModel, which to me sounds like a MVVM no-no.

How do I bind a TabControl to a collection of ViewModels?

How can I route `/foo` to display `/public/foo.html` in Rails?

Routing to static html page in /public

I&#39;m having trouble using the regex of the `find` command. Probably something I don&#39;t understand about escaping on the command line.

Why are these not the same?

    find -regex &#39;.*[1234567890]&#39;
    find -regex &#39;.*[[:digit:]]&#39;

Bash, Ubuntu

linux find regex

I'm having trouble using the regex of the <code>find</code> command. Probably something I don't understand about escaping on the command line.
Why are these not the same?
<pre><code class="hljs language-arduino">find -regex '.*[1234567890]'
find -regex '.*[[:digit:]]'
</code></pre>
Bash, Ubuntu

I have found very similar posts, but I can&#39;t quite get my regular expression right here.

I am trying to write a regular expression which returns a string which is between two other strings. For example: I want to get the string which resides between the strings &quot;cow&quot; and &quot;milk&quot;.

&gt; My cow always gives milk

would return

&gt; &quot;always gives&quot;

Here is the expression I have pieced together so far:

    (?=cow).*(?=milk)

However, this returns the string &quot;cow always gives&quot;.




Regular expression to get a string between two strings in Javascript

I need some help on declaring a regex. My inputs are like the following:

```none
this is a paragraph with&lt;[1&gt; in between&lt;/[1&gt; and then there are cases ... where the&lt;[99&gt; number ranges from 1-100&lt;/[99&gt;. 
and there are many other lines in the txt files
with&lt;[3&gt; such tags &lt;/[3&gt;
```

The required output is:

```none
this is a paragraph with in between and then there are cases ... where the number ranges from 1-100. 
and there are many other lines in the txt files
with such tags
```

I&#39;ve tried this:

    #!/usr/bin/python
    import os, sys, re, glob
    for infile in glob.glob(os.path.join(os.getcwd(), &#39;*.txt&#39;)):
    	for line in reader: 
    		line2 = line.replace(&#39;&lt;[1&gt; &#39;, &#39;&#39;)
    		line = line2.replace(&#39;&lt;/[1&gt; &#39;, &#39;&#39;)
    		line2 = line.replace(&#39;&lt;[1&gt;&#39;, &#39;&#39;)
    		line = line2.replace(&#39;&lt;/[1&gt;&#39;, &#39;&#39;)
    		
    		print line

I&#39;ve also tried this (but it seems like I&#39;m using the wrong regex syntax):

    		line2 = line.replace(&#39;&lt;[*&gt; &#39;, &#39;&#39;)
    		line = line2.replace(&#39;&lt;/[*&gt; &#39;, &#39;&#39;)
    		line2 = line.replace(&#39;&lt;[*&gt;&#39;, &#39;&#39;)
    		line = line2.replace(&#39;&lt;/[*&gt;&#39;, &#39;&#39;)

I dont want to hard-code the `replace` from 1 to 99.

How to input a regex in string.replace?

For Python 2.5, 2.6, should I be using `string.replace` or `re.sub` for basic text replacements?

In PHP, this was explicitly stated but I can&#39;t find a similar note for Python.

Use Python&#39;s string.replace vs re.sub

I&#39;m using `Pattern`/`Matcher` to get the response code in an HTTP response. `groupCount` returns 1, but I get an exception when trying to get it! Any idea why?

Here&#39;s the code:

    //get response code
    String firstHeader = reader.readLine();
    Pattern responseCodePattern = Pattern.compile(&quot;^HTTP/1\\.1 (\\d+) OK$&quot;);
    System.out.println(firstHeader);
    System.out.println(responseCodePattern.matcher(firstHeader).matches());
    System.out.println(responseCodePattern.matcher(firstHeader).groupCount());
    System.out.println(responseCodePattern.matcher(firstHeader).group(0));
    System.out.println(responseCodePattern.matcher(firstHeader).group(1));
    responseCode = Integer.parseInt(responseCodePattern.matcher(firstHeader).group(1));

And here&#39;s the output:

    HTTP/1.1 200 OK
    true
    1
    Exception in thread &quot;Thread-0&quot; java.lang.IllegalStateException: No match found
	 at java.util.regex.Matcher.group(Unknown Source)
	 at cs236369.proxy.Response.&lt;init&gt;(Response.java:27)
	 at cs236369.proxy.ProxyServer.start(ProxyServer.java:71)
	 at tests.Hw3Tests$1.run(Hw3Tests.java:29)
	 at java.lang.Thread.run(Unknown Source)


&quot;No match Found&quot; when using matcher&#39;s group method

The following code is very well known to convert accented chars into plain Text:

    Normalizer.normalize(text, Normalizer.Form.NFD).replaceAll(&quot;\\p{InCombiningDiacriticalMarks}+&quot;, &quot;&quot;);

I replaced my &quot;hand made&quot; method by this one, but i need to understand the &quot;regex&quot; part of the replaceAll

1) What is &quot;InCombiningDiacriticalMarks&quot; ?  
2) Where is the documentation of it? (and similars?)

Thanks.


Regex: what is InCombiningDiacriticalMarks?

How do you uninstall node.js using the cmd line in linux?


Uninstall Node.JS using Linux command line?

I have a bit of an issue with one of my projects. 

I have been trying to find a well documented example of using shared memory with `fork()` but to no success.

Basically the scenario is that when the user starts the program, I need to store two values in shared memory: **current_path** which is a _char*_ and a **file_name** which is also _char*_.

Depending on the command arguments, a new process is kicked off with `fork()` and that process needs to read and modify the **current_path** variable stored in shared memory while the **file_name** variable is read only.

Is there a good tutorial on shared memory with example code (if possible) that you can direct me to?


How to use shared memory with Linux in C

I get similar results running &quot;env&quot; and &quot;set&quot;. Set gives more results - is it a superset of env?

The man page for set doesn&#39;t give any information. How do these commands work and what&#39;s the difference?


What&#39;s the difference between &quot;env&quot; and &quot;set&quot; (on Mac OS X or Linux)?

We distribute in Linux a static lib in both 64-bit and 32-bit versions.  When troubleshooting a customer, I would like my diagnostic shell script to quickly eliminate the issue by checking the .a archive file to detetmine whether it is 32 or 64 bit.  The methods that occur to me are less than elegant:

1.  extract a .o member and ask the &quot;file&quot; command (e.g., ELF 32-bit etc)  

2.  start including a dummy member coded to indicate, e.g. 32bit.o/64bit.o and use &quot;ar -t&quot; to check

I have tried &quot;strings xyz.a | grep 32&quot; but this doesn&#39;t work well over versions.  Not a heartbreaker problem, but if you know of an elegant solution, I would like to know.


In LINUX determine if a .a library/archive 32-bit or 64-bit?

Somehow, at some point, I accidentally created a file in my home directory named &#39;-s&#39;. It is about 500 kb and I have no idea if it contains important data or not. I cannot figure out any way to do *anything* with this file, because every command I use to try to view, copy, or move it interprets the filename as an argument. 

I&#39;ve tried putting it in quotes, escaping it with a backslash, a combination of the two, nothing seems to work.

Also, when I first posed this question to my coworkers, we puzzled over it for a while until someone finally overheard and asked &quot;why don&#39;t you just rename it?&quot; After I explained to him that cp and mv both think the filename is an argument so it doesn&#39;t work, he said &quot;no, not from the command line, do it from Gnome.&quot; I sheepishly followed his advice, and it worked. HOWEVER I&#39;m still interested in how you would solve this dilemma if you didn&#39;t have a window manager and the command line was the only option.

How do I deal with a filename that starts with the hyphen (-) character?

I need to pass a function as a parameter in Bash. For example, the following code:

    function x() {
      echo &quot;Hello world&quot;
    }

    function around() {
      echo &quot;before&quot;
      eval $1
      echo &quot;after&quot;
    }

    around x

Should output:

    before
    Hello world
    after

I know `eval` is not correct in that context but that&#39;s just an example :)

Any idea?

Bash: pass a function as parameter

I would like to pipe standard output of a program while keeping it on screen.

With a simple example (`echo` use here is just for illustration purpose) :

`$ echo &#39;ee&#39; | foo`  
`ee`  &lt;- the output I would like to see

I know tee could copy stdout to file but that&#39;s not what I want.  
`$ echo &#39;ee&#39; | tee output.txt | foo`

I tried  
`$ echo &#39;ee&#39; | tee /dev/stdout | foo` but it does not work since tee output to `/dev/stdout` is piped to `foo`

How to pipe stdout while keeping it on screen ? (and not to a output file)

I am using Ubuntu and I am tired of this long prompts in bash when I am working with some deep directory hierarchy. So, I would like to tweak my PS1 to shorten the working directory part the following way:

Currently I have:

    pajton@dragon:~/workspace/projects/project1/folder1/test$

and would like to have:

    pajton@dragon:~/workspace/.../folder1/test$

The truncating would occur if len($PWD) passes given threshold. I want to always keep the first path component and at least one last path component. Then as space permits, add more components taking from the right.

This is what I have currently. It works, but: 1) doesn&#39;t keep first path component, 2) doesn&#39;t respect cutting path at boundaries:

    pwd_length=14
    pwd_symbol=&quot;...&quot;
    newPWD=&quot;${PWD/#$HOME/~}&quot;
    
    if [ $(echo -n $newPWD | wc -c | tr -d &quot; &quot;) -gt $pwd_length ]
    then
       newPWD=&quot;...$(echo -n $PWD | sed -e &quot;s/.*$.\{$pwd_length\}$/\1/&quot;)&quot;
    else
       newPWD=&quot;$(echo -n $PWD)&quot;
    fi

And the result:

    pajton@dragon:...sth/folder1/sample$ 


Thanks in advance!

How can I shortern my command line prompt&#39;s current directory?

Anyone know of anything they can recommend in order to extract just the plain text from a `.doc` or `.docx`?

I&#39;ve found [this](https://stackoverflow.com/q/42482) - wondered if there were any other suggestions?

How to extract just plain text from .doc &amp; .docx files?

I&#39;m working on a backup script and want to tar up a file directory:

    tar czf ~/backup.tgz /home/username/drupal/sites/default/files

This tars it up, but when I untar the resulting file, it includes the full file structure: the files are in `home/username/drupal/sites/default/files`.

Is there a way to exclude the parent directories, so that the resulting tar just knows about the last directory (`files`)?

How do I tar a directory without retaining the directory structure?

I want to parse `/proc/net/tcp/`, but is it safe? 

How should I open and read files from `/proc/` and not be afraid, that some other process (or the OS itself) will be changing it in the same time?

Is it safe to parse a /proc/ file?

shell gurus,

I have a bash shell script, in which I launch a background function, say `foo()`, to display a progress bar for a boring and long command:

    foo()
    {
        while [ 1 ]
        do
            #massively cool progress bar display code
            sleep 1
        done
    }
    
    foo &amp;
    foo_pid=$!

    boring_and_long_command
    kill $foo_pid &gt;/dev/null 2&gt;&amp;1
    sleep 10


now, when `foo` dies, I see the following text:

    /home/user/script: line XXX: 30290 Killed                  foo

This totally destroys the awesomeness of my, otherwise massively cool, progress bar display.

How do I get rid of this message?

bash: silently kill background function process

When writing shell programs, we often use `/bin/sh` and `/bin/bash`. I usually use `bash`, but I don&#39;t know what&#39;s the difference between them.

What&#39;s main difference between Bash and `sh`?

What do we need to be aware of when programming in Bash and `sh`?




Difference between sh and Bash

Alright, so simple problem here. I&#39;m working on a simple back up code.  It works fine except if the files have spaces in them.  This is how I&#39;m finding files and adding them to a tar archive:

    find . -type f | xargs tar -czvf backup.tar.gz 

The problem is when the file has a space in the name because tar thinks that it&#39;s a folder.  Basically is there a way I can add quotes around the results from find? Or a different way to fix this?

Find files and tar them (with spaces)

In MATLAB it is easy to find the indices of values that meet a particular condition:

    &gt;&gt; a = [1,2,3,1,2,3,1,2,3];
    &gt;&gt; find(a &gt; 2)     % find the indecies where this condition is true
    [3, 6, 9]          % (MATLAB uses 1-based indexing)
    &gt;&gt; a(find(a &gt; 2))  % get the values at those locations
    [3, 3, 3]

What would be the best way to do this in Python?

So far, I have come up with the following.  To just get the values:

    &gt;&gt;&gt; a = [1,2,3,1,2,3,1,2,3]
    &gt;&gt;&gt; [val for val in a if val &gt; 2]
    [3, 3, 3]
    
But if I want the index of each of those values it&#39;s a bit more complicated:

    &gt;&gt;&gt; a = [1,2,3,1,2,3,1,2,3]
    &gt;&gt;&gt; inds = [i for (i, val) in enumerate(a) if val &gt; 2]
    &gt;&gt;&gt; inds
    [2, 5, 8]
    &gt;&gt;&gt; [val for (i, val) in enumerate(a) if i in inds]
    [3, 3, 3]

Is there a better way to do this in Python, especially for arbitrary conditions (not just &#39;val &gt; 2&#39;)?

I found functions equivalent to MATLAB &#39;find&#39; in NumPy but I currently do not have access to those libraries.

MATLAB-style find() function in Python

Why is there a difference in output between using 

    find . -exec ls &#39;{}&#39; \+

and

    find . -exec ls &#39;{}&#39; \;

I got:

    $ find . -exec ls  \{\} \+
    ./file1  ./file2

    .:
    file1  file2  testdir1

    ./testdir1:
    testdir2

    ./testdir1/testdir2:
    

    $ find . -exec ls  \{\} \;
    file1  file2  testdir1
    testdir2
    ./file2
    ./file1


Using semicolon (;) vs plus (+) with exec in find

I’m trying to count a particular word occurrence in a whole directory. Is this possible?

Say for example there is a directory with 100 files all of whose files may have the word “aaa” in them. How would I count the number of “aaa” in all the files under that directory?

I tried something like:

     zegrep &quot;xception&quot; `find . -name &#39;*auth*application*&#39; | wc -l 

But it’s not working.

How to count occurrences of a word in all the files of a directory?

In bash I want to return file name (and the path to the file) for every file of type `.php|.html|.js` containing the case-insensitive string `&quot;document.cookie&quot; | &quot;setcookie&quot;`

How would I do that?


Content Type	Original Author	Original Content on Stackoverflow
Question	Dijkstra	View Question on Stackoverflow
Solution 1 - Regex	bmk	View Answer on Stackoverflow
Solution 2 - Regex	dogbane	View Answer on Stackoverflow
Solution 3 - Regex	kurumi	View Answer on Stackoverflow
Solution 4 - Regex	StKiller	View Answer on Stackoverflow

linux find regex

Regex Problem Overview

Regex Solutions

Solution 1 - Regex

Solution 2 - Regex

Solution 3 - Regex

Solution 4 - Regex

Routing to static html page in /public

How do I bind a TabControl to a collection of ViewModels?

Attributions