No, that&#39;s not possible. The port is not part of the hostname, so it has no meaning in the `hosts`-file.


If you really need to do this, use a reverse proxy. For example, with Nginx:

    server {
      listen       api.mydomain.com:80;
      server_name  api.mydomain.com;
      location / {
        proxy_pass http://127.0.0.1:8000;
      }
    }

i have defined some strings in the `strings.xml` file. Now I need to put some extra space between some numbers in the string. When I type extra space characters this is not showing on the application though.

Before:

    &lt;string name=&quot;spelatonertext3&quot;&gt;-4, 5, -5, 6, -6,

And if I put extra space like this:

    &lt;string name=&quot;spelatonertext3&quot;&gt;-4,  5, -5,   6,  -6,

It just looks the same on the app. How can I make space characters into the XML string?

How to put space character into a string name in XML?

I would like to calculate an [MD5][1] checksum of some content. How do I do this in PowerShell?

  [1]: http://en.wikipedia.org/wiki/MD5


How to get an MD5 checksum in PowerShell

Can I map an IP address like `127.0.0.1` to a domain name *and* a port?

For example, I would like to map `127.0.0.1` to `api.example.com:8000`

Can I map a hostname *and* a port with /etc/hosts?

Can I map an IP address like <code>127.0.0.1</code> to a domain name and a port?
For example, I would like to map <code>127.0.0.1</code> to <code>api.example.com:8000</code>

I&#39;ve booted up a CentOS server on rackspace and executed `yum install httpd`&#39;d. Then `services httpd start`. So, just the barebones.

I can access its IP address remotely over ssh (22) no problem, so there&#39;s no problem with the DNS or anything (I think...), but when I try to connect on port 80 (via a browser or something) I get connection refused. 

From localhost, however, I can use telnet (80), or even lynx on itself and get served with no problem. From outside (my house, my school, a local coffee shop, etc...), telnet connects on 22, but not 80. 

I use `netstat -tulpn` (&lt;- I&#39;m not going to lie, I don&#39;t understand the `-tulpn` part, but that&#39;s what the internet told me to do...) and see 

    tcp    0    0 :::80     :::*    LISTEN    -                   

as I believe I should. The `httpd.conf` says `Listen 80`. 

I have `services httpd restart`&#39;d many a time.

Honestly I have no idea what to do. There is NO way that rackspace has a firewall on incoming port 80 requests. I feel like I&#39;m missing something stupid, but I&#39;ve booted up a barebones server twice now and have done the absolute minimum to get this functioning thinking I had mucked things up with my tinkering, but neither worked. 

Any help is greatly appreciated! (And sorry for the long winded post...)

**Edit**
I was asked to post the output of `iptables -L`. So here it is:

    Chain INPUT (policy ACCEPT)
    target     prot opt source               destination         
    ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
    ACCEPT     icmp --  anywhere             anywhere            
    ACCEPT     all  --  anywhere             anywhere            
    ACCEPT     tcp  --  anywhere             anywhere            state NEW tcp dpt:ssh 
    REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited 
    
    Chain FORWARD (policy ACCEPT)
    target     prot opt source               destination         
    REJECT     all  --  anywhere             anywhere            reject-with icmp-host-prohibited 
    
    Chain OUTPUT (policy ACCEPT)
    target     prot opt source               destination   



apache not accepting incoming connections from outside of localhost

How to copy contents from a directory and not symbolic link?

Following is the shell script to read all the DSF present in the box. But since the line is having spaces, it is displaying them in different lines.
For those of you who dont understand `ioscan -m dsf`, replace it by `ls -ltr`, then the output is such that the permission and names are displayed in different line, but i want them in the same line.

    #!/usr/bin/ksh
    
    for a in `ioscan -m dsf`
    do
     echo  $a
    done



Iterate over lines instead of words in a for loop of shell script

I have a directory that I want to compress to send it by e-mail, I&#39;ve tried this:

    tar -cvf filename.tar.gz directory_to_compress/

But when I try to send it by e-mail, Google says:

    filename.tar.gz contains an executable file. For security reasons, Gmail does not allow you to send this type of file.

How to compress a directory into a `tar.gz` file from command line?

How to send a compressed archive that contains executables so that Google&#39;s attachment filter won&#39;t reject it

I have two scripts 1.sh and 2.sh.

1.sh is as follows:

    #!/bin/sh
    variable=&quot;thisisit&quot;
    export variable

2.sh is as follows:

    #!/bin/sh
    echo $variable

According to what I read, doing like this (export) can access the variables in one shell script from another. But this is not working in my scripts. Can somebody please help. Thanks in advance.

export not working in my shell script

I am confused about DNS caching. I am writing a small forward proxy server and want to use OS DNS cache on a Linux system.
 
If I understand correctly, then there is DNS caching at the browser level. Then there is DNS caching at OS level (Windows has it. I am not sure if Linux distros have it by default). 

So, how does a browser/proxy_server use OS DNS caching? I am trying to find if I can rely on Linux for DNS caching instead of doing it on my own inside my proxy.

Thanks

DNS caching in linux

I&#39;m running into this problem trying to link my **Godaddy domain** with an **AWS Elastic Beanstalk instance**. I found a lot of documentation on how to link an **EC2 instance** with a domain on Godaddy but not for Elastic Beanstalk instance. So I ended up with this URL: `www.MY_SITE.elasticbeanstalk.com`

Here is what I did for an EC2 instance:

 1. I updated the **Nameservers** on my Godaddy domain with the ones from my **Route 53 Hosted Zone**.
 2. I created a new **Elastic IP** on the EC2 console.
 3. I went back to Godaddy and updated the **DNS A @** field from their DNS Manager, with the EC2 Elastic IP one.
 4. You normally have to wait 1h to 48h and it should work.

How can I do the same for a AWS Elastic Beanstalk instance, not an EC2 one? I can&#39;t see the instance I created from my EC2 console in order to link it to an Elastic IP.

Hope this is clear enough.. Any help?

How to link godaddy domain with AWS Elastic Beanstalk environment?

I would like to host 2 different domains in the same server using nginx.
I redirected both domains to this host via @ property. Although I configure 2 different server blocks, whenever I try to access second domain, it redirects to first one.

Here is my config.

    server {
		listen      www.domain1.com:80;
		access_log  /var/log/nginx/host.domain1.access.log  main;
		root /var/www/domain1;
		server_name www.domain1.com;

		location ~ \.php$ {
		    # Security: must set cgi.fixpathinfo to 0 in php.ini!
		    fastcgi_split_path_info ^(.+\.php)(/.+)$;
		    fastcgi_pass 127.0.0.1:9000;
		    fastcgi_index index.php;
		    fastcgi_param SCRIPT_FILENAME         $document_root$fastcgi_script_name;
		    fastcgi_param PATH_INFO $fastcgi_path_info;
		    include /etc/nginx/fastcgi_params;
	    }
	}

	server {
        listen       www.domain2.com:80;
        access_log  /var/log/nginx/host.domain2.access.log  main;
        root /var/www/domain2;
        server_name www.domain2.com;

        location ~ \.php$ {
            # Security: must set cgi.fixpathinfo to 0 in php.ini!
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass 127.0.0.1:9000;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME         $document_root$fastcgi_script_name;
            fastcgi_param PATH_INFO $fastcgi_path_info;
            include /etc/nginx/fastcgi_params;
        }
    }

How can I fix this?
Thanks.

Nginx Different Domains on Same IP

I was too quick about visiting a site I set up on a customer server, and Firefox now remembers, that the default site for (example) 

    testsite.mycompanyname.com (non existing subdomain, same as *.mycompanyname.com)

is 

    www.mycompanyname.dk - or rather the IP of the default server

I have then later set up the public DNS (a-record) to redirect to another server, but Firefox remembers the default IP adress.

Chrome/IE/Safari - no problem, as they have not visited that site before DNS kicked in...

I have set these in about:config:

    network.dns.disablePrefetch = true
    network.dnsCacheExpiration = 0

Anything else?

I really need firebug to debug the frontend on that site....

Cheers


Firefox invalidate dns cache

I&#39;m having trouble with routing a subdomain to a Wordpress blog hosted on Heroku, and the root domain to another Heroku app.

If I have purchased a domain called `cheese.com` on NameCheap and I&#39;d like to route a subdomain like `blog.cheese.com` how could I do this on Heroku?

What type of setting would I need to place on each Heroku application?



How to point subdomain to a Heroku app, and root domain to another Heroku app?

This might be a very basic question but it confuses me.  

Can two different connected sockets share a port? I&#39;m writing an application server that should be able to handle more than 100k concurrent connections, and we know that the number of ports available on a system is around 60k (16bit). A connected socket is assigned to a new (dedicated) port, so it means that the number of concurrent connections is limited by the number of ports, unless multiple sockets can share the same port. So the question.

TCP: can two different sockets share a port?

I tried to close the tomcat using `./shutdown.sh` from tomcat `/bin` directory. But found that the server was not closed properly. And thus I was unable to restart&lt;br&gt;My tomcat is running on port `8080`.

I want to kill the tomcat process running on `8080`. I first want to have the list of processes running on a specific port (8080) in order to select which process to kill.

How to kill a process running on particular port in Linux?

Is there a way to examine the status of a specific port from the Windows command line? I know I can use netstat to examine all ports but netstat is slow and looking at a specific port probably isn&#39;t.

Command line for looking at specific port

I opened port #5955 from a java class to comunicate from a client. How do i close this port after I am done? and also which command can show me if port open or closed?


How do I close an open port from the terminal on the Mac?

What ports does RabbitMQ Server use or need to have open on the firewall for a cluster of nodes?

My `/usr/lib/rabbitmq/bin/rabbitmq-env` is set below which I&#39;m assuming are needed (35197).

    SERVER_ERL_ARGS=&quot;+K true +A30 +P 1048576 \   
    -kernel inet_default_connect_options [{nodelay,true}] \  
    -kernel inet_dist_listen_min 35197 \   
    -kernel inet_dist_listen_max 35197&quot;

I haven&#39;t touched the `rabbitmq.config` to set a custom `tcp_listener` so it should be listening on the default 5672.


Here are the relevant netstat lines:

    tcp        0      0 0.0.0.0:4369           0.0.0.0:*           LISTEN      728/epmd 
    tcp        0      0 0.0.0.0:35197          0.0.0.0:*           LISTEN      5126/beam
    tcp6       0      0 :::5672                :::*                LISTEN      5126/beam

My questions are:

1. for other nodes to be able to connect to the cluster, do all 3 ports 4369, 5672 and 35197 need to be open?

2. Why isn&#39;t 5672 running on tcp and not just tcp6?



What ports does RabbitMQ use?

I&#39;m still learning Node JS and javascript and have an app.  I have a configuration file where I need to grab the hostname of the server on Ubuntu 12.04

I tried something like:

     window.location.hostname

But that did not work.  Sample code below:

    exports.config = {
        app_name : [ window.location.hostname ]
    }

If I use a string, it will load fine, but this is going to be managed through Github and needs to be differentiated when the app loads.

Node JS return hostname

I&#39;d like to get remote machine/hostname through IP Address. 
I found lots of answer such as nslookup, host, resloveip, etc..
but I still can&#39;t get hostname from my target machine(cent OS, ubuntu etc...)
It seems need to register to DNS server?

I have a machine named **test** and using IP **10.1.27.97**

but I used the method above still can&#39;t not get &quot;**test**&quot;

Does anyone can help me to get the hostname form IP Address?

How to get hostname from IP (Linux)?

Is there a way I can reach my docker containers using names instead of ip addresses?

I&#39;ve heard of pipework and I&#39;ve seen some dns and hostname type options for docker, but I still am unable to piece everything together.

Thank you for your time.

I&#39;m not sure if this is helpful, but this is what I&#39;ve done so far:

- installed docker container host using docker-machine and the vmwarevsphere driver
- started up all the services with docker-compose
- I can reach all of the services from any other machine on the network using IP and port

I&#39;ve added a DNS alias entry to my private network DNS server and it matches the machine name that&#39;s used by docker-machine.  But the machine always picks up a different IP address when it boots and connects to the network.

I&#39;m just lost as to where to tackle this:

- network DNS server
- docker-machine hostname
- docker container hostname
- probably some combination of all of them

I&#39;m probably looking for something similar to this question:

https://stackoverflow.com/questions/27342382/how-can-let-docker-use-my-network-router-to-assign-dhcp-ip-to-containers-easily

Any general direction will be awesome...thanks again!



Content Type	Original Author	Original Content on Stackoverflow
Question	Carson	View Question on Stackoverflow
Solution 1 - Linux	mata	View Answer on Stackoverflow
Solution 2 - Linux	Eric Fortis	View Answer on Stackoverflow

Can I map a hostname and a port with /etc/hosts?

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How to get an MD5 checksum in PowerShell

How to put space character into a string name in XML?

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