Pavel Kondratev kaloprominat

## git: replace remove override tag bash
git tag -d <tagname>
git push origin :refs/tags/<tagname>
git tag -f <tagname>
git push origin master --tags

## bash: xor encrypt decrypt string with passphrase
#!/bin/bash

# requirements:
#
# md5
# cut
# tr
# base64
#

## currentBuildIsSeed.py
#!/usr/bin/python

import objc

from Foundation import NSBundle, NSClassFromString

SeedingBundle = NSBundle.bundleWithPath_('/System/Library/PrivateFrameworks/Seeding.framework')
objc.loadBundleFunctions(SeedingBundle, globals(), [("currentBuildIsSeed", '@')])
buildInfo = NSClassFromString('SDBuildInfo')

## catalogUtilities.py
#!/usr/bin/python

import objc

from Foundation import NSBundle, NSClassFromString

SeedingBundle = NSBundle.bundleWithPath_('/System/Library/PrivateFrameworks/Seeding.framework')

functions = [
             ('currentCatalog', '@'),

## mac os x: bash software update change beta catalog

softwareupdate --clear-catalog
Enabling is a bit more tricky, because you need to choose your channel/source. The options are:

OS X Public Beta

sudo softwareupdate --set-catalog https://swscan.apple.com/content/catalogs/others/index-10.12beta-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
OS X Developer Beta catalog

sudo softwareupdate --set-catalog https://swscan.apple.com/content/catalogs/others/index-10.12seed-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

## mac os: run macbook firmware updater create package
Procedure followed by Pepijn to run the high sierra firmware installer:

1. get the FirmwareUpdate.pkg file from the OS installer app's installESD.dmg
2. extract the contents using pkgutil --expand FirmwareUpdate.pkg <path somewhere>/FirmwareUpdate
3. in terminal, cd to the Scripts directory inside the expanded firmwareupdate pkg.
4. with Scripts as your working directory, run these 2 commands, then reboot:
  /usr/libexec/FirmwareUpdateLauncher -p "$PWD/Tools"
  /usr/libexec/efiupdater -p "$PWD/Tools/EFIPayloads"
5. at the reboot, firmware will be updated if there are any updates to be applied.

## bash mysql: percona xtrabackup innobackupex backup slave
innobackupex --slave-info --databases=db ./

## mac os x: parse extract read cat decode mobile mobileprovision provision file
security cms -D -i path_to_mobileprovision

## linux: resize reduce shrink lvm lxc container size
# resize LXC by lxctl

lxctl set <container> --rootsz 150g

# or

lxctl stop <container>

e2fsck -f /dev/vg00/container

## linux: bash add swap file memory linux ubuntu
How To Add Swap on Ubuntu 14.04
Posted Apr 28, 2014 532.2k views Getting Started Linux Basics Server Optimization Ubuntu
Introduction

One of the easiest way of increasing the responsiveness of your server and guarding against out of memory errors in your applications is to add some swap space. Swap is an area on a hard drive that has been designated as a place where the operating system can temporarily store data that it can no longer hold in RAM.

Basically, this gives you the ability to increase the amount of information that your server can keep in its working "memory", with some caveats. The space on the hard drive will be used mainly when space in RAM is no longer sufficient for data.

The information written to disk will be slower than information kept in RAM, but the operating system will prefer to keep running application data in memory and use swap for the older data. Overall, having swap space as a fall back for when your system's RAM is depleted is a good safety net.
	#!/usr/bin/python

	import objc

	from Foundation import NSBundle, NSClassFromString

	SeedingBundle = NSBundle.bundleWithPath_('/System/Library/PrivateFrameworks/Seeding.framework')
	objc.loadBundleFunctions(SeedingBundle, globals(), [("currentBuildIsSeed", '@')])
	buildInfo = NSClassFromString('SDBuildInfo')

	softwareupdate --clear-catalog
	Enabling is a bit more tricky, because you need to choose your channel/source. The options are:

	OS X Public Beta

	sudo softwareupdate --set-catalog https://swscan.apple.com/content/catalogs/others/index-10.12beta-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
	OS X Developer Beta catalog

	sudo softwareupdate --set-catalog https://swscan.apple.com/content/catalogs/others/index-10.12seed-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
	Procedure followed by Pepijn to run the high sierra firmware installer:

	1. get the FirmwareUpdate.pkg file from the OS installer app's installESD.dmg
	2. extract the contents using pkgutil --expand FirmwareUpdate.pkg <path somewhere>/FirmwareUpdate
	3. in terminal, cd to the Scripts directory inside the expanded firmwareupdate pkg.
	4. with Scripts as your working directory, run these 2 commands, then reboot:
	/usr/libexec/FirmwareUpdateLauncher -p "$PWD/Tools"
	/usr/libexec/efiupdater -p "$PWD/Tools/EFIPayloads"
	5. at the reboot, firmware will be updated if there are any updates to be applied.
	# resize LXC by lxctl

	lxctl set <container> --rootsz 150g

	# or

	lxctl stop <container>

	e2fsck -f /dev/vg00/container
	How To Add Swap on Ubuntu 14.04
	Posted Apr 28, 2014 532.2k views Getting Started Linux Basics Server Optimization Ubuntu
	Introduction

	One of the easiest way of increasing the responsiveness of your server and guarding against out of memory errors in your applications is to add some swap space. Swap is an area on a hard drive that has been designated as a place where the operating system can temporarily store data that it can no longer hold in RAM.

	Basically, this gives you the ability to increase the amount of information that your server can keep in its working "memory", with some caveats. The space on the hard drive will be used mainly when space in RAM is no longer sufficient for data.

	The information written to disk will be slower than information kept in RAM, but the operating system will prefer to keep running application data in memory and use swap for the older data. Overall, having swap space as a fall back for when your system's RAM is depleted is a good safety net.