You can use the option `-C` (or `--directory` if you prefer long options) to give the target directory of your choice in case you are using the Gnu version of `tar`.  The directory should exist:

    mkdir foo
    tar -xzf bar.tar.gz -C foo

If you are not using a `tar` capable of extracting to a specific directory, you can simply `cd` into your target directory prior to calling `tar`; then you will have to give a complete path to your archive, of course.  You can do this in a scoping subshell to avoid influencing the surrounding script:

    mkdir foo
    (cd foo; tar -xzf ../bar.tar.gz)  # instead of ../ you can use an absolute path as well

Or, if neither an absolute path nor a relative path to the archive file is suitable, you also can use this to name the archive outside of the scoping subshell:

    TARGET_PATH=a/very/complex/path/which/might/even/be/absolute
    mkdir -p &quot;$TARGET_PATH&quot;
    (cd &quot;$TARGET_PATH&quot;; tar -xzf -) &lt; bar.tar.gz


    gzip -dc archive.tar.gz | tar -xf - -C /destination

or, with GNU tar

    tar xzf archive.tar.gz -C /destination

Extracts *myArchive.tar* to */destinationDirectory*

**Commands:** 


    cd /destinationDirectory
    pax -rv -f myArchive.tar -s &#39;,^/,,&#39;

You can use **for** loop to untar multiple .tar.gz files to another folder.
The following code will take /destination/folder/path as an argument to the script and untar all .tar.gz files present at the current location in /destination/folder/path.

```
if [ $# -ne 1 ];
 then
 echo &quot;invalid argument/s&quot;
 echo &quot;Usage: ./script-file-name.sh /target/directory&quot;
 exit 0
fi
for file in *.tar.gz
do
    tar -zxvf &quot;$file&quot; --directory $1
done
```

I&#39;m unsure if this is a RedHat specific issue, but I had to move the -C to the front of the untar command so that the change directory executed ahead of the untar.  Every other example I saw has it at the end, and for me would mean the archive was unpacked into the working dir.  Example below:

    tar -C /u00/app/oracle/product -xvf /var/tmp/oem-backup.tar.gz u00/app/oracle/product/OEM --strip-components=4

On a new Android SDK installation, the Eclipse Graphical Layout is blank, rather than showing the rendering of the layout. Eclipse displays this message:

&gt; This version of the rendering library is more recent than your version of ADT plug-in. Please update ADT plug-in.

The bug report *[Eclipse reports rendering library more recent than ADT plug-in][1]* lists the steps to reproduce. How do I fix this?

  [1]: https://code.google.com/p/android/issues/detail?id=60180


Eclipse reports rendering library more recent than ADT plug-in

How can I install gitk on a Mac?

From their official website, it seems gitk comes with Git, but the version of my Git (*git version 1.7.12.4 (Apple Git-37)*) does not come with gitk.

`brew install gitk` does not work for gitk.

Version information (copied from comments):

* [OS X v10.8.2][1] (12C2034) (Mountain Lion)
* [Xcode][2] version 4.6 (4H127)

  [1]: https://en.wikipedia.org/wiki/Git
  [2]: https://en.wikipedia.org/wiki/Xcode


Install gitk on Mac

I have an archive 

&gt; *.tar.gz

How can I uncompress this in a destination directory?

How to uncompress a tar.gz in another directory

I have an archive
> *.tar.gz
How can I uncompress this in a destination directory?

I&#39;m writing a script in Unix where I have to check whether the first character in a string is &quot;/&quot; and if it is, branch.

For example, I have a string:

    /some/directory/file

I want this to return 1, and:

    server@10.200.200.20:/some/directory/file

to return 0.






How can I check the first character in a string in Bash or Unix shell?

I just installed `screen` and like the idea to divide linux terminal into multiple pieces. But I can&#39;t figure out one thing: How to scroll up and down, when I&#39;m in `screen`. When I&#39;m using regular linux terminal I can achieve this with &lt;kbd&gt;Shift&lt;/kbd&gt; + &lt;kbd&gt;Pg Up&lt;/kbd&gt; or &lt;kbd&gt;Shift&lt;/kbd&gt; + &lt;kbd&gt;Pg Dn&lt;/kbd&gt;`. but unfortunatelly it doesn&#39;t work in divided terminal.

That&#39;s what I mean when saying `screen` and divided terminal:
![enter image description here][1]


And that&#39;s a regular termina (just in case):
![enter image description here][2]


  [1]: http://i.stack.imgur.com/0N9vH.png
  [2]: http://i.stack.imgur.com/586le.png

How to scroll up and down in sliced &quot;screen&quot; terminal

I&#39;m trying to find UNIX or bash command to run a command after connecting to an ssh server.  For example:

    ssh name@ip &quot;tmux list-sessions&quot;

The above code works, it lists the sessions, but it then immediately disconnects.  Putting it in the sshrc on the server side works, but I need to be able to type it in client side.  I want to be able to run a command, it logs in, opens up the window, then runs the command I&#39;ve set. Ive tried 

    [command] | ssh name@ip

    ssh name@ip [command]

    ssh name@ip &quot;[command]&quot;

    ssh -t name@ip [command]

Run ssh and immediately execute command

I&#39;m debugging a shell script and trying to find out the task performed by the following command:

    sed -i &#39;1,+999d&#39; /home/org_user/data.txt

I need to change this command as its failing with the following error:

    illegal option sed -i

But before changing, I need to understand the BAU functioning.

Appreciate any inputs in this regard.

What does sed -i option do?

This may sound silly, but I have a file/ script that need to run and in order to do it I must change it to become executable. I would want to use either `chmod a+x` or `chmod 755`. But is there a difference between using `chmod a+x` and `chmod 755`?


Difference between using &quot;chmod a+x&quot; and &quot;chmod 755&quot;

I have the following command in the part of a backup shell script:

    tar -cjf site1.bz2 /var/www/site1/

When I list the contents of the archive, I get:

    tar -tf site1.bz2
    var/www/site1/style.css
    var/www/site1/index.html
    var/www/site1/page2.html
    var/www/site1/page3.html
    var/www/site1/images/img1.png
    var/www/site1/images/img2.png
    var/www/site1/subdir/index.html

But I would like to remove the part `/var/www/site1` from directory and file names within the archive, in order to simplify extraction and avoid useless constant directory structure. Never know, in case I would extract backuped websites in a place where web data weren&#39;t stored under `/var/www`.

For the example above, I would like to have :

    tar -tf site1.bz2
    style.css
    index.html
    page2.html
    page3.html
    images/img1.png
    images/img2.png
    subdir/index.html

So, that when I extract, files are extracted in the current directory and I don&#39;t need to move extracted files afterwards, and so that sub-directory structures is preserved.

There are already many questions about tar and backuping in `stackoverflow` and at other places on the web, but most of them ask for dropping the entire sub-directory structure (flattening), or just add or remove the initial / in the names (I don&#39;t know what it changes exactly when extracting), but no more.

After having read some of the solutions found here and there as well as the manual, I tried :

    tar -cjf site1.bz2 -C . /var/www/site1/
    tar -cjf site1.bz2 -C / /var/www/site1/
    tar -cjf site1.bz2 -C /var/www/site1/ /var/www/site1/
    tar -cjf site1.bz2 --strip-components=3 /var/www/site1/

But none of them worked the way I want. Some do nothing, some others don&#39;t archive sub-directories anymore.

It&#39;s inside a backup shell script launched by a Cron, so I don&#39;t know well, which user runs it, what is the path and the current directory, so always writing absolute path is required for everything, and would prefer not changing current directory to avoid breaking something further in the script (because it doesn&#39;t only backup websites, but also databases, then send all that to FTP etc.)

How to achieve this?

Have I just misunderstood how the option -C works?



Tar a directory, but don&#39;t store full absolute paths in the archive

I want to tar and all .php and .html files in a directory and its subdirectories. If I use 

`tar -cf my_archive *`
 
it tars all the files, which I don&#39;t want. If I use 

`tar -cf my_archive *.php *.html`

it ignores subdirectories. How can I make it tar recursively but include only two types of files?

How to tar certain file types in all subdirectories?

I am trying to create a `.tar.xz` compressed archive in one command. What is the specific syntax for that?

I have tried `tar cf - file | xz file.tar.xz`, but that does not work.

Create a tar.xz in one command

I am using `make` and `tar` to backup. When executing makefile, tar command shows `file changed as we read it`. In this case,

 - the tar package is ok when the warning comes up
 - but it stops the tar command for the following backup
 - the file showing the warning in fact doesn&#39;t change -- it is really strange that the warning comes up
 - the files showing the warning come up randomly, I mean, everytime I run my makefile, the files showing the warning are different
 - `--ignore-failed-read` doesn&#39;t help. I am using tar 1.23 in MinGW
 - I just changed my computer to WIN7 64 bit. The script works well in old WIN7 32 bit. But the tar version is not as new as the 1.23.

How can I stop the tar&#39;s warning to stop my backup following the warning?

-------------------------------------------------------------------
**Edit-2**: it might be the reason

As I said above, the bash shell script worked well in my old computer. Comparing with the old computer, the `msys` version is different. So is the version of tar command. In the old computer, tar is 1.13.19 and it is 1.23 in the new computer. I copied the old tar command without copying its dependency msys-1.0.dll to the new computer and renamed it tar_old. And I also updated the tar command in the shell script and run the script. Then everything is ok. So, it seemed that the problem is the tar command. I am sure that there is no any file changed when taring. Is it a bug for tar command in new version? I don&#39;t know.

-------------------------------------------------------------------
**Edit-1**: add more details

The backup is invoked by a bash shell script. It scans the target directory and builds makefile then invokes make to use tar command for backup. Followed is a typical makefile built by the bash shell script.

    #--------------------------------------------
    # backup VC
    #--------------------------------------------
    # the program for packing
    PACK_TOOL=tar
    
    # the option for packing tool
    PACK_OPTION=cjvf
    
    # M$: C driver
    WIN_C_DIR=c:
    
    # M$: D driver
    WIN_D_DIR=d:
    
    # M$: where the software is
    WIN_PRG_DIR=wuyu/tools
    # WIN_PRG_DIR=
    
    # where to save the backup files
    BAKDIR=/home/Wu.Y/MS_bak_MSYS
    
    VC_FRAMEWORK=/home/Wu.Y/MS_bak_MSYS/tools/VC/VC_framework.tar.bz2
    VC_2010=/home/Wu.Y/MS_bak_MSYS/tools/VC/VC_2010.tar.bz2
    
    .PHONY: all
    
    all: $(VC_FRAMEWORK) $(VC_2010)
    
    $(VC_FRAMEWORK): $(WIN_C_DIR)/$(WIN_PRG_DIR)/VC/Framework/*
    	@$(PACK_TOOL) $(PACK_OPTION) &quot;$@&quot; --ignore-failed-read /c/$(WIN_PRG_DIR)/VC/Framework
    $(VC_2010): $(WIN_C_DIR)/$(WIN_PRG_DIR)/VC/VS2010/*
    	@$(PACK_TOOL) $(PACK_OPTION) &quot;$@&quot; --ignore-failed-read /c/$(WIN_PRG_DIR)/VC/VS2010

As you can see, the tar package is stored in ~/MS_bak_MSYS/tools/VC/VC_2010.tar.bz2. I run the script in ~/qqaa. `~/MS_bak_MSYS` is excluded from tar command. So, the tar file I am creating is not inside a directory I am trying to put into tar file. This is why I felt it strange that the warning came up.

 

tar: file changed as we read it

On my Linux machine, I wish to create a .tar.bz2 file of a certain folder. Once I place myself in that folder (in the terminal), what do I type in the terminal command line to place the compressed folder in the home directory of my machine?

Let&#39;s say I am in the folder /home/user/folder. In the folder &quot;folder&quot; are several files (txt, .c etc). How do I compress that folder of type .tar.bz2 and place it in my /home directory?

In the /home/user/folder, I&#39;ve tried `sudo tar -cvjSf folder.tar.bz2` but get an error:

&gt; tar: Cowardly refusing to create an empty archive

Create a .tar.bz2 file Linux

Is there any way to get curl to decompress a response without sending the Accept-encoding headers in the request?

I&#39;m trying to debug an issue where the order of the Accept-encoding headers may be relevant, but I also need to know what the response is.  If I just send `-H &#39;Accept-encoding: gzip` and the server gzips the response, curl won&#39;t decompress it.

Is there any way to get curl to decompress a response without sending the Accept headers in the request?

The compression algorithm used in *zlib* is essentially the same as that in *gzip* and *zip*. What are *gzip* and *zip*? How are they different and how are they same?

How are zlib, gzip and zip related? What do they have in common and how are they different?

I am trying to connect to an api, that returns GZip encoded JSON, from a WCF service (WCF service to WCF service). I am using the **HTTPClient** to connect to the API and have been able to return the JSON object as a string. However I need to be able to store this returned data in a database and as such I figured the best way would be to return and store the JSON object in an array or byte or something along those lines. 

What I am having trouble with specifically is the decompressing of the GZip encoding and have been trying lots of different example but still cant get it. 

The below code is how I am establishing my connection and getting a response, this is the code that returns a string from the API.

    public string getData(string foo)
    {
        string url = &quot;&quot;;
        HttpClient client = new HttpClient();
        HttpResponseMessage response;
        string responseJsonContent;
        try
        {
            client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue(&quot;application/json&quot;));
            response = client.GetAsync(url + foo).Result;
            responseJsonContent = response.Content.ReadAsStringAsync().Result;
            return responseJsonContent;
        }
        catch (Exception ex)
        {
            System.Windows.Forms.MessageBox.Show(ex.Message);
            return &quot;&quot;;
        }
    }

I have been following a few different examples like these [StackExchange API][1], [MSDN][2], and a couple on stackoverflow, but I haven&#39;t been able to get any of these to work for me. 

What is the best way to accomplish this, am I even on the right track? 

Thanks guys.

  [1]: https://web.archive.org/web/20150312130407/http://cgeers.com/2011/10/02/stack-exchange-api/
  [2]: https://msdn.microsoft.com/en-us/library/system.io.compression.gzipstream%28v=vs.110%29.aspx

Decompressing GZip Stream from HTTPClient Response

We use Spring Boot/MVC with annotation-based java-config for series of RESTful services and we want to selectively enable HTTP GZIP stream compression on some API responses.

I know I can do this manually in my controller and a `byte[] @ResponseBody`, however we&#39;d prefer to rely on the Spring MVC infrastructure (filters/etc) and have it automatically do the JSON conversion and compression (i.e. the method returns a POJO).

How can I enable GZIP compression in the ResponseBody or embedded Tomcat instance, and in a way we can selectively compress only some responses?

We don&#39;t currently have any XML based configuration.

Using GZIP compression with Spring Boot/MVC/JavaConfig with RESTful

I&#39;m serving gzipped copies of my css / javascript files. As per a tutorial, I set the content-type as `application/gzip` when serving these files. However, chrome doesn&#39;t seem to un-gzip these files, and for the javascript files I get a lot of &#39;illegal character&#39; errors. If I view source, I still see the files as compressed, rather than uncompressed.

My question is, what should I set as the content type for these files, in order for the browser to interpret them correctly as gzipped css / js files, and un-gzip them? If I just set `text/javascript` or `text/css`, will the browser still interpret them correctly?

Edit: Full response headers:

    HTTP/1.1 200 OK
    x-amz-id-2: UIBkZT/MuFxsmn+3nVOzEO63rRY99l3traCbMExUgSdGHUrOIPtNp34h1+ujYKmt
    x-amz-request-id: 19346C9B01D8FC62
    Date: Mon, 12 May 2014 03:59:51 GMT
    Content-Encoding: gzip
    Last-Modified: Mon, 12 May 2014 02:24:54 GMT
    ETag: &quot;561080b5e19f6daea2e74fd5a0623c79&quot;
    Accept-Ranges: bytes
    Content-Type: application/x-gzip
    Content-Length: 5153
    Server: AmazonS3



Content Type	Original Author	Original Content on Stackoverflow
Question	Mercer	View Question on Stackoverflow
Solution 1 - Unix	Alfe	View Answer on Stackoverflow
Solution 2 - Unix	Mercer	View Answer on Stackoverflow
Solution 3 - Unix	javaPlease42	View Answer on Stackoverflow
Solution 4 - Unix	Rahul	View Answer on Stackoverflow
Solution 5 - Unix	Iain Hunter	View Answer on Stackoverflow

How to uncompress a tar.gz in another directory

Unix Problem Overview

Unix Solutions

Solution 1 - Unix

Solution 2 - Unix

Solution 3 - Unix

Solution 4 - Unix

Solution 5 - Unix

Install gitk on Mac

Eclipse reports rendering library more recent than ADT plug-in

Attributions