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@gaoyifan
gaoyifan / joinMP4
Created December 26, 2013 12:17
append lots of mp4 in one mp4 file
file=`find . -name '*.mp4' | sed 's/^\.\// -cat "/g' | tr '\n' '"'`
#echo $file
echo "MP4Box $file output.mp4" | bash
@gaoyifan
gaoyifan / bmon-3.1-patch.diff
Created June 16, 2014 22:29
bmon-3.1 patch for Homebrew
diff --git a/Makefile.in b/Makefile.in
index 6a94c01..0cfbd52 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,4 +1,4 @@
-# Makefile.in generated by automake 1.13.2 from Makefile.am.
+# Makefile.in generated by automake 1.14.1 from Makefile.am.
# @configure_input@
# Copyright (C) 1994-2013 Free Software Foundation, Inc.
@gaoyifan
gaoyifan / getCPUtime.cpp
Created June 18, 2014 12:46
getCPUtime
long long getCPUtime()
{
unsigned int time_low,time_high;
asm("rdtsc \n\t");
asm("movl %%eax, %0\n\t":"=g"(time_low));
asm("movl %%edx, %0\n\t":"=g"(time_high));
return ((long long)time_high << 32) | time_low;
}
@gaoyifan
gaoyifan / RTAI installation for ubuntu 14.04.md
Last active March 17, 2019 10:31
RTAI installation for ubuntu 14.04

RTAI installation for ubuntu 14.04

Preparation

download and unzip

cd /usr/src
curl -L https://www.rtai.org/userfiles/downloads/RTAI/rtai-4.1.tar.bz2 | tar xj
curl -L https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.10.32.tar.xz | tar xJ
curl -L http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.10.32-saucy/linux-image-3.10.32-031032-generic_3.10.32-031032.201402221635_amd64.deb -o linux-image-3.10.32-generic-amd64.deb
@gaoyifan
gaoyifan / ubuntu-mount-new-disk.md
Last active November 18, 2021 07:49
ubuntu 添加新硬盘

ubuntu 添加新硬盘

查看硬盘：

# fdisk -l
...
Disk /dev/sdb: 274.9 GB, 274877906944 bytes
255 heads, 63 sectors/track, 33418 cylinders, total 	536870912 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
@gaoyifan
gaoyifan / ubuntu-install-RTT-base-on-RTAI.md
Last active October 27, 2016 11:09
RTT installation for ubuntu14.04 base on RTAI kernel

RTT installation for ubuntu14.04 base on RTAI kernel

install requirement (assuming that use the image I provided)

apt-get install build-essential cmake libxerces-c2-dev omniorb libboost-all-dev doxygen

get RTT source

cd /usr/src
git clone git://gitorious.org/orocos-toolchain/rtt.git

add environment varible

export RTAI_ROOT_DIR=/usr/realtime
export RTAI_INCLUDE_DIR=$RTAI_ROOT_DIR/include

export RTAI_LIBRARY=$RTAI_ROOT_DIR/lib

@gaoyifan
gaoyifan / google-fonts-proxy
Last active November 10, 2022 10:02
google-fonts-proxy
server {
listen 80;
listen 443;
listen [::]:80;
listen [::]:443;
server_name fonts.lug.ustc.edu.cn;
access_log /var/log/nginx/revproxy_access.log;
error_log /var/log/nginx/revproxy_error.log;
@gaoyifan
gaoyifan / png2bin.go
Created November 23, 2015 13:21
package main
import (
"bytes"
"encoding/binary"
"fmt"
"image/png"
"os"
)
@gaoyifan
gaoyifan / keybase.md
Created June 24, 2016 17:40

Keybase proof

I hereby claim:

  • I am gaoyifan on github.
  • I am ylgaoyifan (https://keybase.io/ylgaoyifan) on keybase.
  • I have a public key whose fingerprint is 9729 B528 F023 EBA7 C4FE 8318 50E3 DB81 7CCE F878

To claim this, I am signing this object:

@gaoyifan
gaoyifan / dmesg-mirrors-Wed Sep 28 02:22:43 CST 2016
Created September 27, 2016 18:22
[ 0.573915] pci 0000:00:1a.0: reg 0x20: [io 0x9e80-0x9e9f]
[ 0.574011] pci 0000:00:1a.0: System wakeup disabled by ACPI
[ 0.574059] pci 0000:00:1a.1: [8086:3a38] type 00 class 0x0c0300
[ 0.574098] pci 0000:00:1a.1: reg 0x20: [io 0x9e20-0x9e3f]
[ 0.574194] pci 0000:00:1a.1: System wakeup disabled by ACPI
[ 0.574240] pci 0000:00:1a.2: [8086:3a39] type 00 class 0x0c0300
[ 0.574280] pci 0000:00:1a.2: reg 0x20: [io 0x9dc0-0x9ddf]
[ 0.574373] pci 0000:00:1a.2: System wakeup disabled by ACPI
[ 0.574429] pci 0000:00:1a.7: [8086:3a3c] type 00 class 0x0c0320
[ 0.574449] pci 0000:00:1a.7: reg 0x10: [mem 0xfaaf6000-0xfaaf63ff]