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Updated sudo packages that fix two bugs are now available for Red Hat Enterprise Linux 6. The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root. This update fixes the following bugs: * A race condition in the signal handling code caused the sudo process to become unresponsive after receiving the SIGCHLD signal. This update modifies the signal handling to prevent the race condition, which ensures that the sudo process no longer hangs under these circumstances. (BZ#802440) * The "-l" option is used to list allowed and forbidden commands for the invoking user or for the user specified by the "-U" option. However, previously, the getgrouplist() function incorrectly checked the invoker's group membership instead of the membership of the specified user. Consequently, using the "sudo" command with both the "-l" and "-U" options listed privileges granted to any group the ...

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So you want to set up your own private chat network for friends or family, or maybe your company uses the major chat providers like AIM, Yahoo, MSN, or Google for interoffice communication, but you want more control and to keep the network traffic inside your LAN. Whatever your case may be, this guide will show you how to do it with Ignite Realtime’s Openfire Jabber Server for Linux. http://enbeeone3.com/setting-up-an-xmpp-server-on-centos/