#+title: sources of aminb.org's pages and posts #+hugo_base_dir: .. #+seq_todo: TODO DRAFT DONE #+property: header-args :eval never-export #+options: author:nil #+macro: abbr @@html:$1@@ #+macro: span @@html:$2@@ * Pages :PROPERTIES: :EXPORT_HUGO_SECTION: / :END: ** Home :PROPERTIES: :EXPORT_FILE_NAME: _index :END: I'm a [[/uw][graduate student]] in the [[https://watform.uwaterloo.ca][WatForm]] group at University of Waterloo, supervised by [[https://cs.uwaterloo.ca/~nday/][Dr. Nancy Day]]. I'm interested in using formal methods, especially type systems, to help make software more reliable. ** CV :PROPERTIES: :EXPORT_FILE_NAME: cv :EXPORT_HUGO_MENU: :menu topnav :weight 10 :END: My academic {{{abbr(CV)}}} is available as [[/cv.pdf][cv.pdf]], and an outdated professional resume is available as [[/resume.pdf][resume.pdf]] as well. I'm interested in functional programming and functional languages, type systems, and formal methods in general. I love writing Haskell and I'm looking into Rust and Lean as well. Feel free to [[/contact][drop me a line]] if you like to geek out about any of the above. ** DONE Now CLOSED: [2018-09-04 Tue 10:53] :PROPERTIES: :EXPORT_FILE_NAME: now :EXPORT_HUGO_AUTO_SET_LASTMOD: t :EXPORT_HUGO_MENU: :menu topnav :weight 20 :EXPORT_HUGO_CUSTOM_FRONT_MATTER: :customTitle "What I'm doing now" :END: This is my [[https://nownownow.com/about][now page]]. I'm currently doing my third semester as a [[/uw][graduate student]] in the Waterloo Formal Methods group at University of Waterloo. I'm also TA'ing [[https://www.student.cs.uwaterloo.ca/~se212/][SE 212: Logic and Computation]], taught by my supervisor, Nancy. In my spare time, I write [[https://www.gnu.org/philosophy/free-sw.en.html][free software]] (projects page coming soon), and tend to various tasks as a GNU webmaster. I've also been picking up the guitar, after giving up on my longtime dream of being a pianist, at least for now. This update was on {{< lastmod >}}. ** TODO Projects ** DONE Contact CLOSED: [2018-09-03 Mon 20:44] :PROPERTIES: :EXPORT_FILE_NAME: contact :EXPORT_HUGO_MENU: :menu topnav :weight 40 :EXPORT_HUGO_CUSTOM_FRONT_MATTER: :customTitle "Say hello!" :END: #+macro: xmpp @@html:$1@@ You can contact me via email or through my accounts on various online platforms. *** Primary Email is my preferred method of communication. - [[mailto:amin@aminb.org][amin@aminb.org]], personal or general inquiries - [[mailto:bandali@gnu.org][bandali@gnu.org]], GNU- or free software-related - [[mailto:abandali@uwaterloo.ca][abandali@uwaterloo.ca]], academic or UW-related - gpg key: [[https://pgp.surfnet.nl/pks/lookup?op=vindex&fingerprint=on&search=0xD1FBA36627D65876][CDDE 75F9 0353 8E71 813C DA27 D1FB A366 27D6 5876]] *** Secondary - irc: bandali on [[https://freenode.net][freenode]] and [[https://wiki.mozilla.org/IRC][moznet]] - fediverse: [[https://pleroma.site/users/aminb][aminb@pleroma.site]] - xmpp: {{{xmpp(aminb@member.fsf.org)}}} - matrix: [[https://matrix.to/#/@aminb:matrix.org][@aminb:matrix.org]] *** Other online places - [[https://git.sr.ht/~bandali][bandali]] on [[https://sr.ht][sr.ht]] - [[https://savannah.gnu.org/users/bandali][bandali]] on Savannah - [[https://lobste.rs/u/bandali][bandali]] on Lobsters - [[https://gitlab.com/bandali][bandali]] on GitLab - [[https://keybase.io/bandali][bandali]] on Keybase - [[https://news.ycombinator.com/user?id=bandali][bandali]] on HN - [[https://www.reddit.com/u/bandali][bandali]] on Reddit *** Dormant accounts These are accounts I don't use anymore, unless absolutely necessary. - [[https://functional.cafe/@a][a]] on functional.cafe - [[https://mastodon.social/@aminb][aminb]] on mastodon.social - [[https://savannah.gnu.org/users/aminb][aminb]] on Savannah - [[https://github.com/aminb][aminb]] on GitHub - [[https://www.reddit.com/u/aminb][aminb]] on Reddit - [[https://twitter.com/aminban][aminban]] on Twitter ** Colophon :PROPERTIES: :EXPORT_FILE_NAME: colophon :END: #+macro: light @@html:@@ #+macro: ccbysa @@html:Creative Commons Attribution-ShareAlike 4.0 International @@{{{ccbysa-img}}}@@html:@@ #+macro: ccbysa-img @@html:Creative Commons Licence@@ This is my personal website, previous versions of which I've ran on different domains since 2012. The last version was generated using [[https://www.romanzolotarev.com/ssg.html][ssg]] (shout out to Roman Zolotarev), but I've since ported it to GNU Emacs + Org mode. The sources are available on https://git.sr.ht/~aminb/aminb.org. The site is automatically generated on each =git push= using the [[https://builds.sr.ht][builds.sr.ht]] service (see the [[https://git.sr.ht/~aminb/aminb.org/tree/.build.yml][=.build.yml=]] build manifest) and is deployed to my server, where it's served by [[https://www.nginx.com][Nginx]] on [[https://www.debian.org][Debian GNU/Linux]]. *** Night mode To toggle night mode, click on {{{light}}}, which is always available on the top navigation menu. It saves its state in a browser cookie, other than that no JavaScript is required to use this website. *** Copyright and Licenses :PROPERTIES: :CUSTOM_ID: copyright :END: The source code for this site is licensed under version 3 (or, at your option, any later version) of the [[https://gnu.org/licenses/gpl.html][GNU General Public License]] (see the [[https://git.sr.ht/~aminb/aminb.org/tree/COPYING][=COPYING=]] file). The contents of the website are licensed under a {{{ccbysa}}} license. *** i2p angel :PROPERTIES: :CUSTOM_ID: i2pangel :END: The favicons were derived from [[https://psychosoma.tech][nether]]'s beautiful [[https://psychosoma.tech/me/work/i2pangel.png][i2p angel]], a small version of which is displayed on the home page. ** Search :PROPERTIES: :EXPORT_HUGO_SECTION: / :EXPORT_FILE_NAME: search :EXPORT_HUGO_LAYOUT: search :EXPORT_HUGO_OUTPUTS: html json :EXPORT_HUGO_CUSTOM_FRONT_MATTER: :sitemap '((priority . 0.1)) :END: Results from static site search implemented using /Fusejs/, /jquery/ and /mark.js/. -- [[https://gist.github.com/eddiewebb/735feb48f50f0ddd65ae5606a1cb41ae][Source]] * Posts :PROPERTIES: :EXPORT_HUGO_SECTION: post :EXPORT_HUGO_AUTO_SET_LASTMOD: t :END: ** Arch GNU/Linux on MacBook Air 2013 :arch:macbook: :PROPERTIES: :EXPORT_FILE_NAME: arch-macbook-air :EXPORT_DATE: 2016-11-01 :EXPORT_OPTIONS: ^:{} :EXPORT_HUGO_ALIASES: /2016/11/arch-macbook-air :EXPORT_HUGO_CUSTOM_FRONT_MATTER: :toc true :END: This post summarizes how I install and dual-boot Arch GNU/Linux with Full-Disk Encryption alongside macOS. It is not meant to be a replacement for the [[https://wiki.archlinux.org/index.php/installation_guide][Installation Guide]] or the former [[https://csdietz.github.io/arch-beginner-guide/][Beginner's Guide]]. Rather, it mostly serves as a small summary with a few useful notes about the gotchas. So, make sure you understand what you type into your terminal. If you don't, checking out the Arch wiki should probably be your first step. /Note:/ you will need internet access throughout the installation and the MacBook Air's WiFi doesn't work out of the box on Arch. I recommend using your phone's USB Tethering (if it does support it), or using an Ethernet-USB adapter. *** Shrinking the macOS partition The first step I take is resizing the HFS+ macOS partition to make room for the new {{{abbr(GNU/Linux)}}} installation. There are plenty of tutorials on how to do this using macOS's Disk Utility, so do that and then come back! *** Creating a bootable Arch Installer USB There are different ways of creating a bootable Arch USB, all documented on the [[https://wiki.archlinux.org/index.php/USB_flash_installation_media][USB flash installation media]] page on the Arch wiki, but the simplest one is using =dd= if you already have access to another UNIX system. {{{span(red,Warning:)}}} make sure you backup the data on your flash drive, as =dd= will irrevocably destroy all data on it. Use =lsblk= to find the name (block device) of your USB drive, then run =dd= (as root) as shown below: #+begin_src bash dd bs=4M if=/path/to/archlinux.iso of=/dev/sdx status=progress && sync #+end_src Replace =/path/to/archlinux.iso= with the path to the Arch image you have downloaded, and =/dev/sdx= with your drive. *** Booting up from the USB After creating the install USB, reboot your laptop and hold the alt key and boot into the USB. When booting is complete and you're presented with the prompt, it's a good time to make sure you're connected to the internet (see the /note/ at the top of this post). Use =ping= to verify that you've established a connection: #+begin_src bash ping archlinux.org #+end_src *** Updating the system clock Once you're connected to the internet, make sure the system clock is accurate: #+begin_src bash timedatectl set-ntp true # start and enable systemd-timesyncd #+end_src You can check the service status using =timedatectl status=. *** Partitioning :PROPERTIES: :CUSTOM_ID: partitioning :END: I won't dive into partitioning and instead, I'll refer you to the [[https://wiki.archlinux.org/index.php/Partitioning][Partitioning]] page of Arch wiki. Of the available partitioning tools, I personally prefer =cfdisk=. *** Setting up LVM & LUKS I use a [[https://wiki.archlinux.org/index.php/Dm-crypt/Encrypting_an_entire_system#LVM_on_LUKS][LVM on LUKS]] setup, where I set up LVM on top of the encrypted partition. First, let's set up the underlying encrypted partition: #+begin_src bash cryptsetup -v --cipher aes-xts-plain64 --key-size 512 --hash sha512 \ --iter-time 5000 --use-urandom -y luksFormat /dev/sdaX #+end_src where =/dev/sdaX= is the partition you created in the last step (e.g. =/dev/sda4=). For more information about the =cryptsetup= options, see the [[https://wiki.archlinux.org/index.php/Dm-crypt/Device_encryption#Encryption_options_for_LUKS_mode][LUKS encryption options]]. Then we open the container: #+begin_src bash cryptsetup open --type luks /dev/sdaX lvm #+end_src Now it's time to use lvm and prepare the logical volume(s): #+begin_src bash pvcreate /dev/mapper/lvm vgcreate vg /dev/mapper/lvm lvcreate --extents +100%FREE -n root vg #+end_src This will create a physical volume on the mapping we just opened, create a volume group named =vg= on the physical volume, and create a logical volume named =root= that spans the entire volume group. More complex setups are possible thanks to the great flexibility of lvm. We now format the logical volume with =ext4=: #+begin_src bash mkfs.ext4 /dev/mapper/vg-root #+end_src *** Installing the base system Let's mount the logical volume, make a directory for the mount point of the boot partition, and mount the boot partition (=/dev/sda1=): #+begin_src bash mount /dev/mapper/vg-root /mnt mkdir /mnt/boot mount /dev/sda1 /mnt/boot #+end_src Finally, let's install the base system (and optionally =base-devel=): #+begin_src bash pacstrap /mnt base base-devel #+end_src *** Configuring the system Let's generate the fstab: #+begin_src bash genfstab -U /mnt >> /mnt/etc/fstab #+end_src Use your favorite terminal-based editor, edit the fstab file and add the =discard= option for the root partition to enable TRIM on the SSD. Now we change root into our newly installed system and will configure it. Adjust these according to your own setup. #+begin_src bash arch-chroot /mnt /bin/bash passwd # set the root password echo myhostname > /etc/hostname # set the hostname ln -s /usr/share/zoneinfo/Canada/Eastern /etc/localtime # time zone hwclock --systohc --utc # write system clock to hardware clock (UTC) useradd -m -G wheel -s /bin/bash myuser # create myuser passwd myuser # set the password for myuser echo "myuser ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers.d/myuser # uncomment en_US.UTF-8 UTF-8 and other needed locales in /etc/locale.gen locale-gen echo LANG=en_US.UTF-8 > /etc/locale.conf export LANG=en_US.UTF-8 #+end_src Then adjust the initramfs hooks in =/etc/mkinitcpio.conf= and enable the =encrypt= and =lvm2= hooks, and make sure =keyboard= is available before =encrypt= so you can actually type in the LUKS password when booting. Your =HOOKS= line should look similar to this: #+begin_src HOOKS="base udev autodetect modconf block keyboard encrypt lvm2 filesystems fsck" #+end_src After adjusting the hooks, build the initramfs: #+begin_src bash mkinitcpio -p linux #+end_src Now, install the =intel-ucode= package. We'll configure the bootloader to enable intel microcode updates. #+begin_src bash pacman -S intel-ucode #+end_src Create the =/boot/loader/loader.conf= with the following content (adjust the timeout to your liking): #+begin_src default arch timeout 3 #+end_src Then create the entry for Arch: #+begin_src bash mkdir -p /boot/loader/entries touch /boot/loader/entries/arch.conf #+end_src Now edit =/boot/loader/entries/arch.conf= to specify the Arch entry: #+begin_src title Arch GNU/Linux linux /vmlinuz-linux initrd /intel-ucode.img initrd /initramfs-linux.img options cryptdevice=/dev/sdaX:vg:allow-discards root=/dev/mapper/vg-root rw #+end_src Again, =/dev/sdaX= is the partition you created in the [[#partitioning][partitioning]] step as the underlying encrypted partition. Finally, install the bootloader, exit the chroot, umount and reboot! #+begin_src bash bootctl install exit umount -R /mnt reboot #+end_src *** Post-installation recommendations Congratulations! You now have a minimal Arch installation. At this point, I usually install my favorite AUR helper, [[https://aur.archlinux.org/packages/pacaur/][pacaur]], then I install the [[https://aur.archlinux.org/packages/broadcom-wl-dkms/][broadcom-wl-dkms]] wireless driver and [[https://aur.archlinux.org/packages/mba6x_bl-dkms/][mba6x_bl-dkms]] backlight driver to fix the post suspend/resume issue where three's no brightness after waking up from suspend, and the only available brightness would be 100%. #+begin_src bash pacaur -S linux-headers dkms # linux-headers is required for dkms pacaur -S broadcom-wl-dkms pacaur -S mba6x_bl-dkms #+end_src Then, I'd like to install - input, graphics, and sound drivers, - a desktop environment (I prefer Xfce or LXQt), - a display manager for login screen (lightdm or sddm), and - a network manager (NetworkManager or ConnMan). Check out the [[https://wiki.archlinux.org/index.php/General_recommendations][General recommendations]] for more details. *** References Here are some resources I've come across each with lots of useful bits and pieces, about installing Arch on a MacBook: - [[https://github.com/pandeiro/arch-on-air][pandeiro/arch-on-air]] - [[https://loicpefferkorn.net/2015/01/arch-linux-on-macbook-pro-retina-2014-with-dm-crypt-lvm-and-suspend-to-disk/][Arch Linux on MacBook Pro Retina 2014 with DM-Crypt, LVM and suspend to disk]] - [[http://frankshin.com/installing-archlinux-on-macbook-air-2013/][Installing Archlinux on Macbook Air 2013]] - [[http://panks.me/posts/2013/06/arch-linux-installation-with-os-x-on-macbook-air-dual-boot/][Arch Linux Installation with OS X on Macbook Air (Dual Boot)]] - [[https://visual-assault.org/2016/03/05/install-encrypted-arch-linux-on-apple-macbook-pro/][Installing (encrypted) Arch Linux on an Apple MacBook Pro]] - [[http://alexeyzabelin.com/arch-on-mac][Installing Arch Linux on a MacBook Air 2013]] - [[https://medium.com/phils-thought-bubble-of-recent-stuff/arch-linux-running-on-my-macbook-2ea525ebefe3][Arch Linux running on my MacBook]] - [[http://codylittlewood.com/arch-linux-on-macbook-pro-installation/][Dual boot Arch Linux on MacBook Pro Installation]] * COMMENT Local Variables :ARCHIVE: # Local Variables: # org-hugo-footer: "\n\n[//]: # \"Exported with love from a post written in Org mode\"\n[//]: # \"- https://ox-hugo.scripter.co\"" # org-hugo-auto-export-on-save: t # End: