evansd

function substitute {
    if [ -z "$1" -o -z "$2" ]; then
        echo "Usage: substitue FROM_STRING TO_STRING [OPTION]..."
        echo
        echo "Replace all occurances of FROM_STRING (a sed-compatible regular"
        echo "expression) with TO_STRING in all files for which ack-grep matches"
        echo "FROM_STRING."
        echo
        echo "Any additional options are passed directly to ack-grep (e.g.,"
        echo " --type=html would only run the substitution on html files)." 

shunchu

t = 236 # seconds
Time.at(t).utc.strftime("%H:%M:%S")
=> "00:03:56"

# Reference
# http://stackoverflow.com/questions/3963930/ruby-rails-how-to-convert-seconds-to-time

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

hofmannsven

Git

Global Settings

• Related Setup: https://gist.github.com/hofmannsven/6814278
• Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
• Interactive Beginners Tutorial: http://try.github.io/
• Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!

blacktm

#!/bin/bash

# --------------------------------------------------------------------------------------------
# Installs Ruby using rbenv/ruby-build on the Raspberry Pi (Raspbian)
#
# Run from the web:
#   bash <(curl -s https://gist.githubusercontent.com/blacktm/8302741/raw/install_ruby_rpi.sh)
# --------------------------------------------------------------------------------------------

# Set the Ruby version you want to install

porjo

Convert sequence of JPEG images to MP4 video

Simple glob:

ffmpeg -r 24 -i '*.JPG' -s hd1080 -vcodec libx264 timelapse.mp4

Start from DSC_0079.JPG

ffmpeg -r 24 -f image2 -start_number 79 -i DSC_%04d.JPG -s hd1080 -vcodec libx264 timelapse2.mp4

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

ryderstorm

# the instructions from here: https://stackoverflow.com/questions/3704919/installing-rmagick-on-ubuntu/31089915#31089915
# worked, but only after I added in line 8

sudo apt-get purge graphicsmagick graphicsmagick-dbg imagemagick-common imagemagick imagemagick-6.q16 libmagickcore-6-headers libmagickwand-dev graphicsmagick-libmagick-dev-compat
sudo apt-get autoremove
sudo apt-get install imagemagick libmagickwand-dev
sudo ln -s /usr/lib/x86_64-linux-gnu/ImageMagick-6.8.9/bin-Q16/Magick-config /usr/bin/Magick-config
export PKG_CONFIG_PATH=/usr/lib/x86_64-linux-gnu/pkgconfig
gem install rmagick

emmanueltissera

Creating the patch

git format-patch -1 <sha>
OR
git format-patch -1 HEAD

Applying the patch

git apply --stat file.patch # show stats.
git apply --check file.patch # check for error before applying

gvenzl

LOCATION=$(curl -s https://api.github.com/repos/<YOUR ORGANIZTION>/<YOUR REPO>/releases/latest \
| grep "zipball_url" \
| awk '{ print $2 }' \
| sed 's/,$//'       \
| sed 's/"//g' )     \
; curl -L -o <OUTPUT FILE NAME> $LOCATION

for example: