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FreeBSD Jail Allow Sound And Flash Access

I am running KDE desktop within FreeBSD jail. How do I get audio working from inside the FreeBSD jail so that flash will also work?
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Ubuntu: SIOCADDRT: File exists Error and Solution

I'm typing the following command under Ubuntu Linux:

route add default gw eth0

But it is giving me out the following error:

SIOCADDRT: File exists

How do I fix this problem?
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Handling nginx Failover With KeepAlived

How do configure to release and obtain VIP (virtual IP) when nginx is dead, down or system is rebooted for the kernel upgrades?
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Linux Increasing The Transmit Queue Length (txqueuelen)

How do I set txqueuelen (the length of the transmit queue) length of the network card device under Linux? How do I set it for a high latency and/or a high speed network for bulk transfer from disturbing interactive traffic like ssh too much?
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Linux MTU Change Size

We've gigabit networks, and large maximum transmission units (MTU) sizes (JumboFrames) can provide better network performance for our HPC environment. How do I change MTU size under Linux?
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What Is The Meaning of In Routing Table?

My home Linux laptop is connected to ADSL router and whenever I run route -n command at the prompt it says is set to my routers IP What is the meaning of
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Ubuntu Linux: Find Out Default Gateway

How do I find out default gateway IP address (default router IP assigned) for my Ubuntu Linux systems?
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Slackware Linux Restart / Start / Stop Networking Service Command

How do I restart or start or stop networking service on Slackware Linux using command line option?
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Set Txqueuelen Under Linux

How do I set txqueuelen of my network interface card (NIC) under any Linux distro?
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Change Txqueuelen Under Linux

How do I change txqueuelen (transmit queue) under Linux for eth0 card to improve performance?
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