On Windows, go to the desired directory, and type:

    ren *.txt *.c

In PowerShell, it is better to use the [`Path.ChangeExtension`][1] method instead of `-replace` (thanks to [Ohad Schneider][2] for the remark):

    Dir *.txt | rename-item -newname { [io.path]::ChangeExtension($_.name, &quot;c&quot;) }

For Linux (Bash):

    for file in *.txt
    do
     mv &quot;$file&quot; &quot;${file%.txt}.c&quot;
    done


  [1]: https://docs.microsoft.com/en-us/dotnet/api/system.io.path.changeextension?view=net-5.0
  [2]: https://stackoverflow.com/users/67824/ohad-schneider

I am trying to print an uint16_t and uint32_t value, but it is not giving the desired output.

    #include &lt;stdio.h&gt;
    #include &lt;netinet/in.h&gt;

    int main()
    {
        uint32_t a = 12, a1;
        uint16_t b = 1, b1;
        a1 = htonl(a);
        printf(&quot;%d---------%d&quot;, a1);
        b1 = htons(b);
        printf(&quot;\n%d-----%d&quot;, b, b1);
        return 0;
    }

I also used

     printf(&quot;%&quot;PRIu32, a);

which is showing an error.

How do I print these values and what will be the desired output?




How do I print uint32_t and uint16_t variables&#39; value?

I&#39;m trying to call a `@Cacheable` method from within the same class:

    @Cacheable(value = &quot;defaultCache&quot;, key = &quot;#id&quot;)
    public Person findPerson(int id) {
       return getSession().getPerson(id);
    } 
    
    public List&lt;Person&gt; findPersons(int[] ids) {
       List&lt;Person&gt; list = new ArrayList&lt;Person&gt;();
       for (int id : ids) {
          list.add(findPerson(id));
       }
       return list;
    }

and hoping that the results from `findPersons` are cached as well, but the `@Cacheable` annotation is ignored, and `findPerson` method got executed everytime.

Am I doing something wrong here, or this is intended?

Spring cache @Cacheable method ignored when called from within the same class

Suppose I have a large number of files in a directory with `.txt` extension.

How can I change the extension of all these files to `.c` using the following command line environments:

* Powershell in Windows 
* cmd/DOS in Windows
* The terminal in bash


How do I change the extension of many files in a directory?

<p>Suppose I have a large number of files in a directory with <code>.txt</code> extension.</p>
<p>How can I change the extension of all these files to <code>.c</code> using the following command line environments:</p>
<ul>
<li>Powershell in Windows</li>
<li>cmd/DOS in Windows</li>
<li>The terminal in bash</li>
</ul>


I have to write a function in bash. The function will take about 7 arguments. I know that I can call a function like this:

To call a function with parameters:

    function_name $arg1 $arg2

And I can refer my parameters like this inside the function:

    function_name () {
       echo &quot;Parameter #1 is $1&quot;
    }

My question is, is there a better way refer to the parameters inside the function? Can I avoid the $1, $2, $3, .... thing and simply use the $arg1, $arg2, ...?

Is there a proper method for this or do I need to re-assign these parameters to some other variables inside the function? E.g.:

    function_name () {
       $ARG1=$1
       echo &quot;Parameter #1 is $ARG1&quot;
    }

Any example would be much appreciated. 

Is there a way to avoid positional arguments in bash?

How can I test if a command outputs an empty string?

Test if a command outputs an empty string

What&#39;s wrong with the following code?

    name=&#39;$filename | cut -f1 -d&#39;.&#39;&#39;

As is, I get the literal string `$filename | cut -f1 -d&#39;.&#39;`, but if I remove the quotes I don&#39;t get anything. Meanwhile, typing

    &quot;test.exe&quot; | cut -f1 -d&#39;.&#39;

in a shell gives me the output I want, `test`. I already know `$filename` has been assigned the right value. What I want to do is assign to a variable the filename without the extension.

How can I remove the extension of a filename in a shell script?

I want to remove **test.extra** from all of my file names in current directory 
 
    for filename in *.fasta;do 

        echo $filename | sed \e &#39;s/test.extra//g&#39;

    done

but it complains about not founding file.echo is to be sure it list correctly. 

Removing part of a filename for multiple files on Linux

How can I convert seconds to hours, minutes and seconds?
    
    show_time() {
      ?????
    }
    
    show_time 36 # 00:00:36
    show_time 1036 # 00:17:26
    show_time 91925 # 25:32:05

Convert seconds to hours, minutes, seconds

I have this one-liner:

    get-WmiObject win32_logicaldisk -Computername remotecomputer

and the output is this:

    DeviceID     : A:
    DriveType    : 2
    ProviderName :
    FreeSpace    :
    Size         :
    VolumeName   :

    DeviceID     : C:
    DriveType    : 3
    ProviderName :
    FreeSpace    : 20116508672
    Size         : 42842714112
    VolumeName   :

    DeviceID     : D:
    DriveType    : 5
    ProviderName :
    FreeSpace    :
    Size         :
    VolumeName   :

How do I get `Freespace` and `Size` of `DeviceID` `C:`? I need to extract just these two values with no other informations. I have tried it with `Select` cmdlet, but with no effect.

**Edit:** 
I need to extract the numerical values only and store them in variables. 

How to get disk capacity and free space of remote computer

I want to retrieve the FQDN name of windows server via powershell script. I have found 2 solution so far:

    $server =  Invoke-Command -ScriptBlock {hostname}

Above line will print just the short name of the server

    $sysinfo = Get-WmiObject -Class Win32_ComputerSystem
    $server = “{0}.{1}” -f $sysinfo.Name, $sysinfo.Domain

Above two line will get me the FQDN but this looks really nasty code to retrieve just the hostname :(

So, My question is, is there an easier way to get the FQDN in powershell. I am a bash/perl coder and recently picked up powershell.. so finding it difficult.

Thanks.

Powershell: Get FQDN Hostname

I have a series of strings which are full paths to files.  I&#39;d like to save just the filename, without the file extension and the leading path.  So from this:

    c:\temp\myfile.txt

to

    myfile

I&#39;m not actually iterating through a directory, in which case something like PowerShell&#39;s `basename` property could be used, but rather I&#39;m dealing with strings alone.

Removing path and extension from filename in PowerShell

I need to set a global variable from a function and am not quite sure how to do it.

    # Set variables
    $global:var1
    $global:var2
    $global:var3

    function foo ($a, $b, $c)
    {
        # Add $a and $b and set the requested global variable to equal to it
        $c = $a + $b
    }

Call the function:

    foo 1 2 $global:var3

End result:

$global:var3 is set to 3

Or if I called the function like this:

    foo 1 2 $global:var2

End result:

$global:var2 is set to 3

I hope this example makes sense. The third variable passed to the function is the name of the variable it is to set.


Setting a global PowerShell variable from a function where the global variable name is a variable passed to the function

Is it possible in Windows to get a folder&#39;s size from the command line without using any 3rd party tool?

I want the same result as you would get when right clicking the folder in the windows explorer → properties.

Get Folder Size from Windows Command Line

Just tried to run an application via the following:

![enter image description here][1]

I have browsed to the directory with an app `WindowsService1.exe` in it, then tried the command `Installutil WindowsService1.exe` but got the following error...

![enter image description here][2]

As VS has only been installed for a day or two I&#39;m worried that something may be wrong with that install as it should recognise installutil.

Are there some basic diagnostics I can perform to ensure that VS Command Prompt is finding all the programs that it should ?

**EDIT**

If i run `PATH` in the command prompt I see the following:

![enter image description here][3]


  [1]: http://i.stack.imgur.com/4jOEK.png
  [2]: http://i.stack.imgur.com/rcR8G.png
  [3]: http://i.stack.imgur.com/4oCa8.png

How to resolve &quot;&#39;installutil&#39; is not recognized as an internal or external command, operable program or batch file.&quot;?

How do I delete files or folders recursively on Windows from the command line?

I have found this solution where path we drive on the command line and run this command.

I have given an example with a .svn file extension folder:

    for /r %R in (.svn) do if exist %R (rd /s /q &quot;%R&quot;)


Delete files or folder recursively on Windows CMD

I installed MinGW and MSYS, added `C:\MinGW\bin` to `PATH` but I still can&#39;t run Makefile on Windows&#39; `cmd`. I would like to run cmd.exe and there type, for example, `make all` but my cmd says that there is no such command. 

What should I do? I don&#39;t want to use MSYS shell, that&#39;s not the point. Any ideas how to use GNU Make in Windows cmd as I can do it in Ubuntu? I&#39;m not interested in `Cygwin`.

How to use GNU Make on Windows?

I want to call

&lt;!-- language: sh --&gt;

    cmd /c &quot;C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\devenv.com&quot; mysolution.sln /build &quot;release|win32&quot;

Unfortunately this does not work, because I get the error:
&gt; &#39;C:\Program&#39; is not recognized as an internal or external command,
operable program or batch file.

As I understand, I need quoting for the spaces and quotes for the |, but I am only allowed to use the quotes once.

Any ideas how to quote this command line call correctly?

Correct quoting for cmd.exe for multiple arguments

I need to delete all .jpg and .txt files (for example) in dir1 and dir2. 

What I tried was:

    @echo off
    FOR %%p IN (C:\testFolder D:\testFolder) DO FOR %%t IN (*.jpg *.txt) DO del /s %%p\%%t

In some directories it worked; in others it didn&#39;t. 

For example, this didn&#39;t do anything:

    @echo off
    FOR %%p IN (C:\Users\vexe\Pictures\sample) DO FOR %%t IN (*.jpg) DO del /s %%p\%%t

What I&#39;m I missing in the second snippet? Why didn&#39;t it work? 

Content Type	Original Author	Original Content on Stackoverflow
Question	Root	View Question on Stackoverflow
Solution 1 - Bash	Smi	View Answer on Stackoverflow

How do I change the extension of many files in a directory?

Bash Problem Overview

Bash Solutions

Solution 1 - Bash

Spring cache @Cacheable method ignored when called from within the same class

How do I print uint32_t and uint16_t variables' value?

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