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ANDROID 10 SAMSUNG IMG PACK/REPACK - UBUNTU 18.10 COSMIC
[BOOTLOADER UNLOCKED IS REQUIRED - FIRST UNLOCK BOOTLOADER]
-----------------------------------------------------------
/etc/apt/sources.list

deb http://old-releases.ubuntu.com/ubuntu/ cosmic main universe restricted multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ cosmic main universe restricted multiverse

deb http://old-releases.ubuntu.com/ubuntu/ cosmic-security main universe restricted multiverse
deb-src http://old-releases.ubuntu.com/ubuntu/ cosmic-security main universe restricted multiverse

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# RouterOS has a limitation where you can't run UPnP on the same interface for both internal and external (in order to DST-NAT from a LAN IP to another LAN IP on same interface/subnet)
# This hack lets you workaround this limitation
#
# In the following example, bridge1 has IP 192.168.0.2 and is the gateway for other some clients with uPnP needs
# The router's default gateway upstream, is another LAN device, eg 192.168.0.1
#
# How it works:
# 1. First we disable uPnP daemon
# 2. We define the intended internal uPnP interface as an external one for now
# 3. Enable uPnP

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#Expand /tmp (if tmpfs)
mount -o remount,size=5G /tmp/

# Clone to multiple disks with progress
dd if=/dev/sda | pv -s $(blockdev --getsize64 /dev/sda) | tee >(dd of=/dev/sdb) | tee >(dd of=/dev/sdc) | dd of=/dev/sdd
# faster... and source can be image or device
pv /dev/sda | tee >(dd bs=64k of=/dev/sdb) >(dd bs=64k of=/dev/sdc) >(dd bs=64k of=/dev/sdd) | dd bs=64k of=/dev/sde

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Let [tag] = any tag in upstream repo

git fetch upstream --tags
git push origin --tags

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###
# MySQL database replication (MyISAM only) using syncthing(+API)
# version 0.2
#
# You'll first want to set up syncthing folders for each /var/lib/mysql/x,y,z,.. mysql database you want to sync
# (and limit max conflicts per folder to 1 (or 0) to keep the db folders 'clean')
#
# Why? Does the job for my application; extremely easy multi-master deployment (slave too)
# Warning: at least 10 second 'margin of error' for potential data corruption ... use at own risk.
###

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vs Questions

---

1. http://stackoverflow.com/questions/804115 (rebase vs merge).
2. https://www.atlassian.com/git/tutorials/merging-vs-rebasing (rebase vs merge)
3. https://www.atlassian.com/git/tutorials/undoing-changes/ (reset vs checkout vs revert)
4. http://stackoverflow.com/questions/2221658 (HEAD^ vs HEAD~) (See git rev-parse)
5. http://stackoverflow.com/questions/292357 (pull vs fetch)
6. http://stackoverflow.com/questions/39651 (stash vs branch)
7. http://stackoverflow.com/questions/8358035 (reset vs checkout vs revert)