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How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

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by default,openwrt do not allow ssh access from wan, here are two method to change that:

1.login into your wrt from a lan host.issue the following command:
iptables -F

the command "flush away" all the firewall rules,including the one that rejects ssh request from wan.
now you can try ssh from anywhere.

aware that the firewall deactivation leads to highly security risk.and after the wrt restarts ,all default firewall configuration comes back.you hava to "flush" the rules once again.

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#!/bin/bash
  # heavily derived from: https://gist.github.com/tacofumi/3041eac2f59da7a775c6
  # I mainly simplifed the title generation and made it automatically create a path

  echo $(date)

  title=$(makemkvcon -r info |grep "DRV:0" | sed -E 's/.+,"(.+)","\/dev\/.+"$/\1/')

  if [[ -z $title ]]; then
    echo "Couldn't set the title - No disk found"

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Build FFmpeg and libva with decode and encode hardware acceleration on an Intel-based validation testbed:

Build platform: Ubuntu

Install baseline dependencies first

sudo apt-get -y install autoconf automake build-essential libass-dev libtool pkg-config texinfo zlib1g-dev libva-dev cmake mercurial libdrm-dev libvorbis-dev libogg-dev git libx11-dev libperl-dev libpciaccess-dev libpciaccess0 xorg-dev

Then add the Oibaf PPA, needed to install the latest development headers for libva:

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for f in /usr/share/figlet/* 
do 
  fs=$(basename $f)
  fname=${fs%%.tlf}
  toilet -f $fname $fname
done

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.force-show-scrollbars ::-webkit-scrollbar-track:vertical {
    border-left: 1px solid #E7E7E7;
    box-shadow: 1px 0 1px 0 #F6F6F6 inset, -1px 0 1px 0 #F6F6F6 inset;
}

.force-show-scrollbars ::-webkit-scrollbar-track:horizontal {
    border-top: 1px solid #E7E7E7;
    box-shadow: 0 1px 1px 0 #F6F6F6 inset, 0 -1px 1px 0 #F6F6F6 inset;
}

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Safest way to clean up boot partition - Ubuntu 14.04LTS-x64

Reference

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 

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Verify and Repair Disk Permissions via Terminal (Mac OS X)

Verify Permissions

diskutil verifyPermissions /

Repair Permissions

diskutil repairPermissions /

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Regular Colors

Value	Color
\e[0;30m	Black
\e[0;31m	Red
\e[0;32m	Green
\e[0;33m	Yellow
\e[0;34m	Blue
\e[0;35m	Purple