kfei

Keybase proof

I hereby claim:

• I am kfei on github.
• I am kfei (https://keybase.io/kfei) on keybase.
• I have a public key ASBqABPMn4hnjXBn2PWO0agEIH4aBQoD7rqrykOtLG576go

To claim this, I am signing this object:

kfei

// With naturalWidth, naturalHeight
myImage.addEventListener('onload', function() {
	console.log('My width is: ', this.naturalWidth);
	console.log('My height is: ', this.naturalHeight);
});

// Without naturalWidth, naturalHeight
function realImgDimension(img) {
    var i = new Image();
    i.src = img.src;

kfei

# Create new array
mdadm --zero-superblock /dev/sd{a,b}
mdadm -C --level 1 /dev/md1 -n 2 /dev/sda2 /dev/sdb2

# Save to mdadm.conf since it will be used in initramfs for assembling arrays
mdadm --detail --scan >> /etc/mdadm.conf

# Make new file system and then migrate data
rsync -avxHAXS -P / /mnt/md1

kfei

# -*- coding: utf-8 -*-

# Define here the models for your scraped items
#
# See documentation in:
# http://doc.scrapy.org/en/latest/topics/items.html

import scrapy

kfei

(pprof) top10
130ms of 130ms total (  100%)
Showing top 10 nodes out of 11 (cum >= 80ms)
      flat  flat%   sum%        cum   cum%
      60ms 46.15% 46.15%       60ms 46.15%  math.Sqrt
      20ms 15.38% 61.54%       80ms 61.54%  github.com/kfei/sshcam/img2xterm.cie94
      20ms 15.38% 76.92%       20ms 15.38%  runtime.usleep
      10ms  7.69% 84.62%       10ms  7.69%  retake
      10ms  7.69% 92.31%       10ms  7.69%  runtime.cas64
      10ms  7.69%   100%       10ms  7.69%  runtime.nanotime

kfei

# Resolve all dependencies for packages that are going to be installed
for pkg in "virt-top cifs-utils redhat-lsb"; do repoquery --requires --resolve --recursive $pkg | grep -vE "i686" > dep-for-$pkg.log

# For a .rpm file, resolving dependencies can be `rpm -qpR mediawiki-1.4rc1-4.i586.rpm`

# Remove duplicates
awk '!x[$0]++' `cat dep-for-$pkg.log` > all-deps.log

# Extract package name from .deb file name
awk -F ":" '{print $1}' all-deps.log | sed -e 's/-[[:digit:]]\+$//g' > deps.log

kfei

#!/bin/bash

docker run -it --rm --privileged --net host \
    -v /tmp/.X11-unix:/tmp/.X11-unix \
    -v $PWD:$HOME/workspace \
    -v $HOME/.Xauthority:$HOME/.Xauthority \
    -e HOME=$HOME \
    -e DISPLAY=$DISPLAY \
    --entrypoint /usr/sbin/ffmpeg \
    kfei/ffmpeg $*

kfei

func main() {
    args := os.Args
    arg := make([](*_Ctype_char), 0)
    l := len(args)
    for i, _ := range args {
        char := C.CString(args[i])
        // defer C.free(unsafe.Pointer(char))
        strptr := (*_Ctype_char)(unsafe.Pointer(char))
        arg = append(arg, strptr)
    }

kfei

# Use ffmpeg to decode input video (GIF in this case)
ffmpeg -i input.gif decode/%d.png

# Use ImageMagick to crop, format: (W)x(H)+(W_SFHIT)+(H_SHIFT)
# Note the {from..to..skip} usage of Bash
convert decoded/{1..759..5}.png -crop 315x172+20+40 resized/%d.png

# An resize option
# convert decoded/{1..759..5}.png -crop 315x172+20+40 -resize 30% resized/%d.png

kfei

RUN buildDeps='gcc libc6-dev make'; \
    set -x \
    && apt-get update && apt-get install -y $buildDeps --no-install-recommends \
    && rm -rf /var/lib/apt/lists/* \
    && mkdir -p /usr/src/redis \
    && curl -sSL "$REDIS_DOWNLOAD_URL" -o redis.tar.gz \
    && echo "$REDIS_DOWNLOAD_SHA1 *redis.tar.gz" | sha1sum -c - \
    && tar -xzf redis.tar.gz -C /usr/src/redis --strip-components=1 \
    && rm redis.tar.gz \
    && make -C /usr/src/redis \