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## 测试写速度
time dd if=/dev/zero of=/tmp/test bs=8k count=1000000

## 测试读速度
time dd if=/tmp/test of=/dev/null bs=8k

## 测试读写速度
time dd if=/tmp/test of=/var/test bs=64k

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cd ~/Documents
git clone https://github.com/jalvesaq/colorout.git
R CMD INSTALL colorout

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wget https://launchpad.net/ubuntu/+archive/primary/+sourcefiles/lbzip2/2.5-2/lbzip2_2.5.orig.tar.bz2

tar -xvf lbzip2_2.5.orig.tar.bz2
cd lbzip2-2.5

sudo ./configure --prefix=/usr
sudo make -j
sudo make install