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sources/Setup Apache 2.4 and Php FPM with mod proxy fcgi on Ubuntu 13.10.md
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没人领我就继续做吧
Setup Apache 2.4 and Php FPM with mod proxy fcgi on Ubuntu 13.10
================================================================================
### mod_proxy_fcgi ###
### mod\_proxy\_fcgi ###
The module mod_proxy_fcgi is a new one and it allows apache to connect to/forward requests to an external fastcgi process manager like php fpm. This allows for a complete separation between the running of php scripts and Apache. Earlier we had to use modules like mod_fcgid and mod_fastcgi which all had some limitations. Mod_fcgid for example did not properly utilise the process management capability of php-cgi whereas mod_fastcgi is a third party module.

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sources/tech/5 Ways To Check If Linux OS is 32 bit or 64 Bit.md
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crowner 验尸中
5 Ways To Check If Linux OS is 32 bit or 64 Bit
================================================================================
Sometimes Linux newbies get confused while downloading a software because the download page offers them both 32 bit and 64 bit versions of the same software. It is important to know whether your Linux OS is 32-bit or 64-bit, as this information is required while doing various tasks. In this article, we will discuss five different ways to check if your Linux OS is 32-bit or 64-Bit.
### Check If Linux is 32-bit or 64-Bit ###
Please note that the methods mentioned in this article are tested on Ubuntu 13.10.
#### 1. Execute the ‘uname -a’ command ####
One of the most common way to check if your Linux OS is 32 bit or 64 Bit is by running the [uname command][1].
For example, on my system, it displayed the following information:
$ uname -a
Linux ubuntu 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:12:00 UTC 2013 i686 athlon i686 GNU/Linux
The highlighted **i686** (or i386 in some cases) signifies that the operating system is 32 bit, but if **x86_64** appears, then it means that the OS is 64 bit.
#### 2. Execute the ‘uname -m’ command ####
A similar but slightly different way is to run the ‘uname -m’ command.
For example, on my system, it displayed the following information:
$ uname -m
i686
Which means that my Ubuntu Linux is 32-bit. If it would have been 64 bit, the output would have been x86_64.
#### 3. Using the file command ####
Although it’s a kind of hack, but still it can be used to solve the purpose. In this case, you have run the file command with **/sbin/init** as an argument.
Here is an example :
$ file /sbin/init
/sbin/init: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=0xc0d86a25a7abb14cad4a65a1f7d03605bcbd41f6, stripped
The highlighted 32-bit signifies a 32-bit OS, and vice-versa.
#### 4. Using the arch command ####
Another alternative is to use the arch command, which prints the machine hardware name.
Here is an example:
$ arch
i686
So you can see that the output was i686, which signifies a 32-bit OS. For a 64-bit OS, the output would have been x86_64.
#### 5. Through system settings ####
If you are using Ubuntu 12.04 or higher, you can easily check your OS architecture by going to All **Settings -> Details**.
![details](http://mylinuxbook.com/wp-content/uploads/2014/04/details.png)
So you can see that the OS type (32-bit) is clearly mentioned here.
Do you know other ways to check if Linux OS is 32 bit or 64 Bit? Share your ideas in comments
--------------------------------------------------------------------------------
via: http://mylinuxbook.com/5-ways-to-check-if-linux-is-32-bit-or-64-bit/
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
[1]:http://mylinuxbook.com/linux-uname-command/