diff --git a/sources/tech/20140825 Linux FAQs with Answers--How to enable Nux Dextop repository on CentOS or RHEL.md b/sources/tech/20140825 Linux FAQs with Answers--How to enable Nux Dextop repository on CentOS or RHEL.md new file mode 100644 index 0000000000..bad9315d07 --- /dev/null +++ b/sources/tech/20140825 Linux FAQs with Answers--How to enable Nux Dextop repository on CentOS or RHEL.md @@ -0,0 +1,49 @@ +Linux FAQs with Answers--How to enable Nux Dextop repository on CentOS or RHEL +================================================================================ +> **Question**: I would like to install a RPM package which is available only in Nux Dextop repository. How can I set up Nux Dextop repository on CentOS or RHEL? + +[Nux Dextop][1] is a third-party RPM repository which contains many popular desktop and multimedia related packages (e.g., Ardour, Shutter, etc) for CentOS, RHEL and ScientificLinux. Currently, Nux Dextop repository is available for CentOS/RHEL 6 and 7. + +To enable Nux Dextop repository on CentOS or RHEL, follow the instructions below. + +First of all, understand that Nux Dextop is designed to coexist with EPEL repository. So you need to [enable EPEL][2] in order to use Nux Dextop repo. + +After enabling EPEL, go ahead and install Nux Dextop repository with rpm command as follows. + +On CentOS/RHEL 6.*: + + $ sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm + +On CentOS/RHEL 7: + + $ sudo rpm -Uvh http://li.nux.ro/download/nux/dextop/el7/x86_64/nux-dextop-release-0-1.el7.nux.noarch.rpm + +Now verify that Nux Dextop repository is successfully installed: + + $ yum repolist + +![](https://farm6.staticflickr.com/5574/14790031847_90b4a829d7_z.jpg) + +### For Repoforge/RPMforge Users ### + +According to the author, Nux Dextop is known to cause conflicts with other third-party RPM repos such as Repoforge and ATrpms. Therefore, if you enabled any third-party repos other than EPEL, it is highly recommend you set Nux Dextop repository to "default off" state. That is, open /etc/yum.repos.d/nux-dextop.repo with a text editor, and change "enabled=1" to "enabled=0" under nux-desktop. + +$ sudo vi /etc/yum.repos.d/nux-dextop.repo + +![](https://farm6.staticflickr.com/5560/14789955930_f8711b3581_z.jpg) + +Then whenever you want to install a package from Nux Dextop repo, explicitly enable the repo as follows. + + $ sudo yum --enablerepo=nux-dextop install + +-------------------------------------------------------------------------------- + +via: http://ask.xmodulo.com/enable-nux-dextop-repository-centos-rhel.html + +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +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://li.nux.ro/download/nux/dextop/ +[2]:http://xmodulo.com/2013/03/how-to-set-up-epel-repository-on-centos.html \ No newline at end of file diff --git a/sources/tech/20140825 Linux FAQs with Answers--How to fix 'failed to run aclocal--No such file or directory'.md b/sources/tech/20140825 Linux FAQs with Answers--How to fix 'failed to run aclocal--No such file or directory'.md new file mode 100644 index 0000000000..076e643bef --- /dev/null +++ b/sources/tech/20140825 Linux FAQs with Answers--How to fix 'failed to run aclocal--No such file or directory'.md @@ -0,0 +1,50 @@ +Linux FAQs with Answers--How to fix “failed to run aclocal: No such file or directory” +================================================================================ +> **Question**: I am trying to build a program on Linux. The development release of the program comes with "autogen.sh" script. When I run it to create configure script, however, I am getting the following error: +> +> Can't exec "aclocal": No such file or directory at /usr/share/autoconf/Autom4te/FileUtils.pm line 326. +> autoreconf: failed to run aclocal: No such file or directory +> +> How can I fix this problem? + +The development release of a program source code often comes with autogen.sh which is used to prepare a build process, including verifying program functionality and generating configure script. This autogen.sh script then relies on autoreconf to invoke autoconf, automake, aclocal and other related tools. + +The missing aclocal is part of automake package. Thus, to fix this error, install the following package. + +On Debian, Ubuntu or Linux Mint: + + $ sudo apt-get install automake + +On CentOS, Fedora or RHEL: + + $ sudo yum install automake + +-------------------------------------------------------------------------------- + +via: http://ask.xmodulo.com/fix-failed-to-run-aclocal.html + +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出 + +[1]: +[2]: +[3]: +[4]: +[5]: +[6]: +[7]: +[8]: +[9]: +[10]: +[11]: +[12]: +[13]: +[14]: +[15]: +[16]: +[17]: +[18]: +[19]: +[20]: \ No newline at end of file diff --git a/sources/tech/20140825 Linux FAQs with Answers--How to install Shutter on CentOS.md b/sources/tech/20140825 Linux FAQs with Answers--How to install Shutter on CentOS.md new file mode 100644 index 0000000000..5715f95a18 --- /dev/null +++ b/sources/tech/20140825 Linux FAQs with Answers--How to install Shutter on CentOS.md @@ -0,0 +1,23 @@ +Linux FAQs with Answers--How to install Shutter on CentOS +================================================================================ +> **Question**: I would like to try out Shutter screenshot program on my CentOS desktop. However, when I tried to install Shutter with yum, it says "No package shutter available." How can I install Shutter on CentOS? + +[Shutter][1] is an open-source (GPLv3) screenshot tool for Linux desktop. It is packed with a number of user-friendly features, making it one of the most powerful screenshot programs in Linux. With Shutter, you can capture a screenshot of a rectangular area, a window, an entire desktop screen, or even a web page at any arbitrary URL. Besides, it also allows you to edit a captured screenshot with a built-in image editor, apply different effects, export to different image formats (svg, pdf, ps), or upload to public image hosts or FTP sites. + +Shutter is not available as a pre-built package on CentOS (as of version 7). Fortunately, there exists a third-party RPM repository called Nux Dextop, which offers Shutter package. So [enable Nux Dextop repository][2] on CentOS. Then use the following command to install Shutter. + + $ sudo yum --enablerepo=nux-dextop install shutter + +![](https://farm4.staticflickr.com/3876/14986638615_6501a68527_z.jpg) + +-------------------------------------------------------------------------------- + +via: http://ask.xmodulo.com/install-shutter-centos.html + +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +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://shutter-project.org/ +[2]:http://ask.xmodulo.com/enable-nux-dextop-repository-centos-rhel.html \ No newline at end of file diff --git a/sources/tech/20140825 Linux FAQs with Answers--How to show a MAC learning table of Linux bridge.md b/sources/tech/20140825 Linux FAQs with Answers--How to show a MAC learning table of Linux bridge.md new file mode 100644 index 0000000000..3c82bdeecb --- /dev/null +++ b/sources/tech/20140825 Linux FAQs with Answers--How to show a MAC learning table of Linux bridge.md @@ -0,0 +1,22 @@ +Linux FAQs with Answers--How to show a MAC learning table of Linux bridge +================================================================================ +> **Question**: I would like to check MAC address learning status of a Linux bridge that I created with brctl tool. How can I view the MAC learning table (or forwarding table) of a Linux bridge? + +A Linux bridge is software implementation of a network bridge, which is part of Linux kernel. Similar to hardware bridge, Linux bridge maintains a layer-2 forwarding table (also known as MAC learning table, forwarding database, or just FDB), which keeps track of what MAC addresses are associated with which ports. When a bridge receives a packet (with source MAC address X) at port N, it records in FDB that MAC address X is reachable from port N. That way, later when a bridge needs to forward a packet destined to address X, it knows where to forward the packet from FDB lookup. Building a FDB is often called "MAC learning" or just "learning" process. + +You can check the current forwarding table or MAC learning table of a Linux bridge using the following command. + + $ sudo brctl showmacs + +![](https://farm4.staticflickr.com/3856/14963353726_8971873948_z.jpg) + +This command will show a list of all learned MAC addresses along with their associated port number. Each entry has a corresponding aging timer attached to it, so that the forwarding entries get refreshed after some time, making the MAC learning table up-to-date. + +-------------------------------------------------------------------------------- + +via: http://ask.xmodulo.com/show-mac-learning-table-linux-bridge.html + +译者：[译者ID](https://github.com/译者ID) +校对：[校对者ID](https://github.com/校对者ID) + +本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出 \ No newline at end of file