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Re: ATS teasers - entry at your own risk (danger of insomnia, anxiety etc.) #6979 Post by Freeze338 » 25 Nov 2019 21:22 @flight50 I hope it'll come in this Friday. Summary: Itching is found among people with Insomnia, especially for people who are female, 60+ old. The study is created by eHealthMe based on reports of 1,495 people who have Insomnia from the Food and Drug Administration (FDA), and is updated regularly.
- On-iPhone Development Environment
- Getting Shell Access
- Fixing What's Broken
Often, for some of the trickier packages to build (like Emacs or mostPython-based programs), it is easier to have a development environmenton the device than to deal with a cross-compiler. The method I outlinehere is one way to get one. It takes up room, and it's outdated, butit works for almost anything you'd want to do, if you put up with it.
If you want to install any of the ports on this website,the best way to do that is through my Cydia repo. You donot need this development environment for those packages.
I'm not going to pretend that this is the best way to do this. Ideveloped this method by changing the one I used for OS 1.0 a littleat a time when a new OS came out. It's a bit of a hack right now, butit works. I point out where I think an improvement could be made.
I'm going to assume you have a freshly jailbroken iPhone or iPad. Feelfree to skip steps if you think you can.
I've tried to write this as accurately as possible, but errors dohappen. Feel free to contact me to work things out. Worst casescenario? You have to do a full restore of your device, which isannoying but not hard. Be sure to have backups, but it shouldn't cometo that!
(Also, standard disclaimer: I claim no responsibility if somehow youmake your device blow up, or otherwise fail, while using this guide.)
For this guide, I'm going to assume at least passing familiarity withthe unix shell. After all, you're here for a development environment!Above that, I'll try to explain what I feel is needed to continue.
Finally, this guide was written for iOS 3.2 on the iPad. It shouldn'tbe significantly different for similar versions on both the iPhone andiPad, though. Particularly, it seems to still work on a jailbrokeniPad running iOS 4.2.1.
Special thanks must go to Børre Ludvigsen, who patiently workedthrough this guide on his own and helped me iron out most of thebigger issues.
Let's get started!
Getting Shell Access
More than likely, since you're here at all, you've already donethis. It's included here for completeness. Feel free to skip ahead!
If you've just jailbroken, install the OpenSSH package. Also,installing the OpenSSH reconnect helper and Insomnia is a goodidea. The helper will reconnect you automatically if you lose yourshell connection, and Insomnia keeps that from happening atall. Nothing is more annoying that having to fidget with your devicejust to keep the Wifi up!
You will also need to install 'APT 0.7 Strict' and 'Core Utilities'from Cydia. The first will let us easily install Cydia packages fromthe command line, which is a lot more convenient, and the second ishandy for working on the command line.
SSH in to your device with the username root
and the passwordalpine
. We're going to change this now, for security, and then we'llgive the user mobile
a password so we can log in without being root.
Getting an Editor
Right now we have no way of editing files. For now, I recommendinstalling nano
. It's lightweight and easy to wrap your headaround. If you've never used it before, look around the web for aGNU nano tutorial. If nano
‘s not your thing, you could also installvim
or even emacs
(though for emacs
, you need my Cydia repository).
(Note: I usually run nano
as nano -w
, which keeps nano
fromautomatically wrapping lines, which can ruin most configuration files.)
Setting Up sudo
Working as root is bad, very bad. I've accidentaly deleted my /usr
once, bricking my iPad. However, it gets annoying to have to su
intoroot every time you want to install something. So let's installsudo
!
Now we need to edit the sudoers file to make sudo
useful. We set theEDITOR
environment variable to keep visudo
from complaining thatvi
isn't there. If you'le using vim
, you can leave it out.
Right below the line that says 'root ALL=(ALL) ALL
', write thesimilar line 'mobile ALL=(ALL) ALL
', then save and exit.
(Note: when you run sudo
as mobile
, it will ask you for apassword sometimes. This is mobile
‘s password, not root
‘s.)
Logging In as mobile
Before we continue, we're going to drop our superuser privelege. Logout and log back in as mobile. As a test, make sure sudo
is workingfine. It'll give you a nice scary administration notice when you runit the first time, as a bonus!
The last line saying root
is the key: it means sudo
is set up rightand correctly giving you root access.
Installing GCC and Friends
Finally, we get to the fun part. First off, let's install somegeneral utilities for our development environment:
Some explanation: ldid
modifies programs to fake iPhone OS intorunning them like official binaries. make
is the standard GNU buildtool. We'll use wget
to fetch tarballs from the internet right inthe terminal, and then patch
to patch them. Autotools, which justabout every package uses, needs gawk
to run.
Next, we're going to install gcc
itself, but if we just go and doit, we'll run into a problem with the libgcc
offered on Telesphoreo:it refuses to install, because it breaks the system. Instead, we'llinstall the dummy package found here, and trick APTinto thinking it's already installed.
Now we're prepared to install gcc
and some development headers. The remaining mac os. Notethat these headers are compatibility headers, meant to ease thetransition from iOS 1.0 to 2.0. That is, they are old. I only trustthem for the standard POSIX headers, and even for that they fail insome parts. This is one place that could probably be improved: moreon that later.
If you're anything like me, you'll be itching to write a little'Hello, world!' program right now and try out your shiny newgcc
. Well, you'd be dissappointed. These packages are so old thatthey need fixing first.
Fixing What's Broken
Libraries
Unfortunately, you have some downloading to do. Go fetch the iPhoneDeveloper SDK. Once you have it, on a Mac, simply installit. If you're not on a Mac, you'll need an archive tool that readsDMGs and Mac packages. I know that 7zip works well on Windows, andprobably works fine through Wine on other systems.
We'll be looking in the iPhoneOS3.2.sdk
directory, but by all meanschange this version number if you need to. On a Mac with the installedofficial SDK, this is at'/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk
'.If you're using 7zip, open the Xcode DMG, then the 5.hfs
partition,which will take a while. Then, open up'iPhoneSDK/Packages/iPhoneSDKHeadersAndLibs.pkg
' for the most recentversion, or '../iPhoneSDKXXX.pkg
' for a different version. Insidethat package, open Payload
, then Payload~
, then '.
'. Thedirectory we are looking for is then at'Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.2.sdk
'.
We need to copy libraries from the official SDK on to thedevice. scp
works really well, if you have it: it transfers filesover SSH. However, anything that gets files from your computer to yourdevice will work.
(Note for the interested: iPhoneOS is missing libraries to linkagainst, so we'll be copying them over. Later on, we'll be editingsystem headers. Also, none of the frameworks on the device come withheaders, so you'll need to copy those over as you need them. It occursto me that we might be able to just copy over the entire officialSDK, and skip doing this by hand. It might work, but I haven't triedit. For now, I just copy over whatever's missing as I run into it. Iwould like to look into this, though.)
In the directory iPhoneOS3.2.sdk/usr/lib
, you will find thefollowing files:
We need to copy these files to mobile
‘s home directory,/var/mobile
, on the device. Once there, reopen your shell on yourdevice and move them to /usr/lib
:
We also need to reconstruct a few symlinks:
Headers
We also need to copy over some key C++ headers. IniPhoneOS3.2.sdk/usr/include/c++/4.0.0/arm-apple-darwin9
, there is adirectory named bits
. Copy that directory and all it contains toyour device, then install it:
Manual Header Modifications
Not only are there critical system libraries missing, but some of theheaders are just plain wrong, too. It seems that somewhere along theline, iPhone OS moved from a 32 bit inode to a 64 bit inode, so thereare a lot of structures defined in these headers that have the wrong size.
(Note for the interested: Beleive me when I say that hunting downbugs in system headers is a nightmare. Just keep in mind, if youseem to be getting random segfaults for no reason, or some extremelysubtle bug that has no reason to exist, it's probably a system headererror I haven't found yet! Compare the given headers with the onesfrom Apple, with __DARWIN_64_BIT_INO_T
defined.)
First off, we're going to edit'/private/var/include/sys/stat.h
'. Make sure to edit with sudo
, soyou have write permissions! In struct stat
, remove the line that says:
Between the entries for st_nlink
and st_uid
, add this line:
After the entry for st_ctimespec
, add this line:
Finally, after the entries for st_ctime
and st_ctimensec
, add these lines:
We're also going to edit '/private/var/include/sys/dirent.h
'. First,we're going to change the definition of __DARWIN_MAXNAMLEN
:
Insomnia (itchy Minaj) Mac Os Wallpaper
In the definition of struct dirent
, remove the line at the top that says
In its place, write in:
Between the entries for d_reclen
and d_type
, write in:
Finally, between the entries for d_type
and d_name
, remove theline that says:
That's it!
Minor Details
Some configure scripts and Makefiles (like Emacs's) looks for the Ccompiler under cc
, which is supposed to exist on standardsetups. Since we emphatically don't have a standard setup, we haveto make a link.
Apparently sometimes the GCC you get won't search /var/include
,which is where all the standard C headers are located. To fix this,add the following lines to ~/.profile
:
Make sure to log out and log back in for these changes to take effect.
Testing your GCC
If you feel so inclined, now would be the time to test out your buildenvironment. GCC works exactly as it does on Mac OS X, that is,exactly like on other systems, but with added options for linking withframeworks. Keep in mind, you may need to sign your programs beforethey'll run. I have found that I don't, but you may need to. If yourprogram crashes for no reason when you start it, you need to run
There's some way to change the system so you don't ever need to dothis, but last I heard there were some long-term side-effects.
You're Done!
Congratulations!
Created None; last modified None (history).Insomnia (itchy Minaj) Mac Os X
This work is available under the Creative Commons Attribution Non-Commercial Share-Alike 3.0 Unported License.Lately, there has been a lot of hype surrounding dark mode, a simple toggle that lets you change the background color of an app window to black.
It has recently been launched on many popular apps, as well as an optional theme on your smartphone. We can safely say: dark mode is here to stay. Here we'll go over why should you turn it on and what are the benefits of dark mode.
The benefits of dark mode
Health & well-being
'Everyone can relate to being in a room where the lights are turned down and you've got this white screen blinding you,' said Sameer Samat, Google's VP of product management for Android and Play, during an interview last week at Google I/O. One Reddit user did well to conclude this point with a brilliant comment about the benefits of dark mode:
But it is not just dry and painful eyes we get from looking at bright blue screens all day long. Exposure to light also suppresses the secretion of melatonin, a hormone needed for sleep. That is also the reason why many of our car dashboards are now blue – to keep us up and alert.
Most of us use our mobile devices throughout the entire day and night. According to Nielsen research group In 2018 Q1, we spent more than 11 hours per day on our devices. It's not surprising why many of us deal with eyes that feel — dry or itchy, and is sometimes accompanied by insomnia, headaches, or neck pain. And even worse, lower melatonin levels have been linked to an increased risk of obesity and some cancers.
Battery saving
Dark mode apps can prolong the battery life of your smartphone. Google has confirmed that using dark mode on OLED screens has been a huge help for battery life. For example, at 50% brightness, the Dark Mode interface in the YouTube app saves about 15% screen energy compared to a flat white background. At 100% screen brightness, the dark interface is saving a whopping 60% of screen energy. While OLED screens are mainly used by Android devices, lately there has been some good news for iPhone users also. Apple has promised to drop all LCD screens by 2020 and deliver all future generation devices with OLED screens. As both IOS and Android should get the native dark mode later in the year, it seems to be a promising upgrade to our phones battery life.
It looks amazing
Let's be honest, dark mode just looks super amazing. While most products are going for that similar bland white look, the dark mode does offer something different that feels mysterious and new. It also provides great opportunities for presenting graphic content such as graphs, dashboards, pictures, and photos. For example, in Weekdone we use the RAG coloring system to provide a quick visual overview of goals progress. Here's how it looks in dark mode vs light mode.
Colors seem to just pop up better on dark backgrounds. The table demonstrating levels of contrast and performance of different color combinations highlight an interesting fact: the black part of the table is the only one that provides good contrast for practically all the colors.
The color of items in an interface may also completely change how we are interacting with the content. There is some research that explores the correlation between the retention of users and using dark mode, which makes it an interesting opportunity for app developers. Eyes get less tired at night, so basically you are able to consume the content for longer periods. If you are like me, who loves to read before going to bed, then having a dark mode really makes it easier on your eyes.
When you shouldn't use dark mode?
However, not everything about dark backgrounds is good. For example, when you are using a device in a well-lit room or in direct sunlight, text positioned on dark backgrounds can be difficult to read. So the only reason not to implement a dark mode is when you're certain your app is exclusively being used during bright daylight, but this is rather exceptional.
This is why an automatic switch from sunset until sunrise is a must-have feature. Users don't even have to keep switching several times a day, which is truly great usability.
If you are interested to improve the productivity of your team, then feel free to sign up to Weekdone. We help teams to set goals in a structured way and build a weekly process of check-ins.
List of other popular services that support dark mode
Insomnia (itchy Minaj) Mac Os Download
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