A collection of links to useful cheat sheets.
Only what's properly printable can get a spot at the top of this list. It should also be small enough to fit on a few pages. almost all links in this document were designed by their creators so that YOU can print them in a good-looking format and store them however is best for you. Anything that isn't really something you could print in A4/UfS Letter format, but is still a well-made cheatsheet can get a spot at the end of the page.
Pleae contribute any you remember you've seen and liked. It would be wonderful if we can get these to be something more commonly made.
https://cdn-cybersecurity.att.com/blog-content/GoogleHackingCheatSheet.pdf (nicely put together!) https://www.alienvault.com/blog-content/GoogleHackingCheatSheet.pdf (original link, dead)
http://bhami.com/unix-rosetta.pdf (printable on big printers)
http://www.tablespace.net/quicksheet/aix-quicksheet.pdf
http://www.cheat-sheets.org/saved-copy/linux_quickref.pdf https://www.loggly.com/wp-content/uploads/2015/05/Linux-Cheat-Sheet-Sponsored-By-Loggly.pdf (Linux and its GNUisms)
https://access.redhat.com/sites/default/files/attachments/12052018_systemd_6.pdf (filed under operating systems for sarcasm only)
http://www.oracle.com/technetwork/solaris-11-cheat-sheet-1556378.pdf (printable, great)
https://cs.indstate.edu/~sbaker/faq/QuickRefCard.pdf
https://www.sans.org/security-resources/sec560/windows_command_line_sheet_v1.pdf (printable, old)
http://dinf.ru/Doc_base/Alcatel_omniswitch_commands.pdf (printable)
http://www.roesen.org/files/cp_cli_ref_card.pdf
https://forums.juniper.net/jnet/attachments/jnet/ConfigLib/147/1/Juniper-SRX-CheatSheet.pdf (printable, old) http://netfixpro.com/wp-content/uploads/2016/09/Juniper-Commands-Cheat-Sheet-1.pdf (printable, looks good)
https://mystajones.files.wordpress.com/2016/06/cisco-ios-quick-reference-cheat-sheet-2-1.pdf (printable)
https://www.jk-47.com/wp-content/uploads/2014/10/command-quick-reference-ccmigration_09186a008051d2b4.pdf (printable)
Let me take a moment to wonder why they still call them 'Multilayer' if they don't even implement FC<->iSCSI Gateway functions like the SN5428 did. I wonders
https://havel.mojeservery.cz/wp-content/uploads/2015/10/routeros-cheat-sheet-v1.1.pdf (printable)
http://eval.veritas.com/downloads/van/vm_quickref.pdf (printable)
http://hamwaves.com/zfs/en/zfs.a4.pdf (good manual, but not 2 pages)
https://gist.github.com/jctosta/af918e1618682638aa82 (Markdown but small enough to print) https://catonmat.net/ftp/screen.cheat.sheet.pdf (PDF, a bit ugly) http://www.guckes.net/Screen/doc/GNU_Screen_Quick_Reference_Card.pdf (perfect!)
http://atkinsam.com/documents/tmux.pdf (wow, so tmux is more complex than screen? wtf people)
https://en.opensuse.org/images/1/17/Zypper-cheat-sheet-1.pdf (printable, front) https://en.opensuse.org/images/3/30/Zypper-cheat-sheet-2.pdf (printable, back)
http://www.arduino.org/learning/getting-started/download/21_924abaed4958b5b40713907d1099b82c (printable)
http://www.postgresonline.com/downloads/special_feature/postgresql90_cheatsheet_A4.pdf
http://www.dusun-think.net/dosya/czyayin/mysqlcheatsheet.pdf https://havel.mojeservery.cz/wp-content/uploads/2015/10/mysql-ref-card.pdf (better looks)
https://www.docker.com/sites/default/files/Docker_CheatSheet_08.09.2016_0.pdf (printable)
https://sematext.com/wp-content/uploads/2017/04/kubernetes-cheatsheet.pdf (printable)
"the ulimate k8s cheat sheet" (printable images when you scroll far down) https://acloudguru.com/blog/engineering/the-ultimate-terraform-cheatsheet
https://www.cheatography.com/davbfr/cheat-sheets/vagrant-cheat-sheet/
WHY is there none for VBoxManage?
http://public.diversetips.se/XenServer%206.0%20XE-Command%20Reference%20(1.1).pdf (WOW!) http://360is.blogspot.de/2009/03/xenserver-administration-poster.html (~2009, asking for email, good intro anyway)
https://www.adldata.org/wp-content/uploads/2015/07/VMware-vSphere-Performance-Resolution-Cheat-Sheet.pdf (performance debugging) http://www.4d-dc.com/sites/default/files/4D_CHEAT_SHEET%20VM_WARE%201%206.pdf (only Ports and Logs)
https://vmware.github.io/photon-controller/assets/files/command-line-cheat-sheet.pdf
https://azeria-labs.com/assembly-basics-cheatsheet/
http://blog.nanard.org/post/2013/05/23/CFEngine-3-%3A%3A-PCRE-cheatsheet (PCRE Cheatsheet)
..
..
(I remember one for knife)
..
https://www.cheatography.com/dlicudi/cheat-sheets/guidelines-for-writing-checks-for-check-mk/
https://www.thomas-krenn.com/de/tkmag/wp-content/uploads/2017/08/ipmitool-cheat-sheet-v1.0.pdf
http://www.cheat-sheets.org/saved-copy/2675288-Veritas-Cluster-Cheat-Sheet.pdf (printable) http://eval.veritas.com/downloads/van/vcs_quickref.pdf (printable, better)
https://services.github.com/on-demand/downloads/github-git-cheat-sheet.pdf (printable) https://www.atlassian.com/dms/wac/images/landing/git/atlassian_git_cheatsheet.pdf (printable, better)
https://www.mercurial-scm.org/wiki/QuickReferenceCardsAndCheatSheets?action=AttachFile&do=view&target=Mercurial-Cheatsheet-Adrian-v1.0.pdf (once you know it, this is beneficial) http://www.cheatography.com/codeshane/cheat-sheets/mercurial-hg/pdf/ (printable)
http://orgmode.org/orgcard.pdf (printable, org mode only?)
https://www.ibm.com/developerworks/community/files/form/anonymous/api/library/0e088c99-9f24-4c5c-a79a-a65ab8323565/document/ea62f503-ceaa-403f-8142-26a946e0723a/media (printable, good explanations I've not seen before)
https://eggplant.pro/blog/wp-content/uploads/2016/12/vi-vim-tutorial.pdf (printable, information density: flight sim users)
https://learncodethehardway.org/unix/bash_cheat_sheet.pdf http://www.asfa.k12.al.us/ourpages/auto/2016/8/10/55689107/reference_bash-cheat.pdf (not too specific) https://www.cheatography.com/citguy/cheat-sheets/bash-shortcuts/ (emacs mode movement only) http://www.catonmat.net/download/bash-vi-editing-mode-cheat-sheet.pdf (vi mode movement only, highly recommended if you want to actually USE your shell)
http://st23.org/misc/sysadmin/downloads/reference.card-ksh.programming.pdf (printable, 1994)
https://download.microsoft.com/download/2/1/2/2122F0B9-0EE6-4E6D-BFD6-F9DCD27C07F9/WS12_QuickRef_Download_Files/PowerShell_ISE_v3.pdf https://static1.squarespace.com/static/552092d5e4b0661088167e5c/t/5760096ecf80a129e0b17634/1465911664070/Windows+PowerShell+Logging+Cheat+Sheet+ver+June+2016+v2.pdf (about logging)
Win: https://code.visualstudio.com/shortcuts/keyboard-shortcuts-windows.pdf Mac: https://code.visualstudio.com/shortcuts/keyboard-shortcuts-macos.pdf Linux: https://code.visualstudio.com/shortcuts/keyboard-shortcuts-linux.pdf
https://resources.jetbrains.com/storage/products/intellij-idea/docs/IntelliJIDEA_ReferenceCard.pdf
https://resources.jetbrains.com/storage/products/webstorm/docs/WebStorm_ReferenceCard.pdf
http://packetlife.net/media/library/16/Markdown.pdf (printable) https://www.rstudio.com/wp-content/uploads/2015/02/rmarkdown-cheatsheet.pdf (printable, for R users)
http://www.digilife.be/quickreferences/QRC/Doxygen%20Quick%20Reference.pdf (printable, ftw)
http://pentestmonkey.net/cheat-sheet/shells/reverse-shell-cheat-sheet (not pdf, but useable)
... nothing yet
... didnt find anything good
(For the record, anything that is not purely PDF should be down here)
https://www.cyberciti.biz/howto/question/linux/apt-get-cheat-sheet.php
https://devhints.io/bash.html (really nice)
http://www.cyberfella.co.uk/2012/08/28/emc-networker/
http://www.unixmantra.com/2013/06/tsm-cheat-sheet.html (wall of text, well made) https://couldnt-care-less.com/2020/11/17/cheat-sheet-fuer-tsm/ (german) https://adsm.org/forum/index.php?threads/cheat-sheet.17079/ at the last post of the thread, if you do sign up
http://lzone.de/cheat-sheet/OpenNebula
https://sabaini.at/pages/ceph-cheatsheet.html
http://www.datadisk.co.uk/html_docs/sun/sun_zfs_cs.htm
https://workaround.org/bacula-cheatsheet/
https://www.cambus.net/freebsd-cheatsheet/ https://gist.github.com/steakknife/77619edfa67c501c8aa0
http://linux-iscsi.org/wiki/ISCSI#Cheat_sheet
http://www.ducea.com/2009/03/08/mdadm-cheat-sheet/
https://www.thegeekdiary.com/centos-rhel-7-firewalld-command-line-reference-cheat-sheet/
https://github.com/bertvv/cheat-sheets/blob/master/print/VyOS.pdf
http://blogofsysadmins.com/xenserver-commands-cheat-sheet (text, not pdf :)
http://richgoldstein.net/KB/esx_cheatsheet.html https://ervikrant06.wordpress.com/2014/07/16/esx-5-5-cheat-sheet-part-1/
http://www.pica8.com/document/v2.3/pdf/ovs-commands-reference.pdf (pica8 is only good docs, pdf, but not a cheat sheet) https://www.packetflow.co.uk/useful-nuage-network-commands/ (also very good, a cheat sheet, someone should organize & pdf this)
There is a well-maintained cheatsheet, it just would need someone who gives it proper formatting. (The author explains the nice markdown pandoc interface but it seems this is also the exact reason why this doesn't have a nice format) https://github.com/Jeeppler/qubes-cheatsheet/raw/master/qubes-cheatsheet.pdf
https://github.com/neilhwatson/nustuff/blob/master/perl/cheatsheet.pod
This has all the stuff you normally need, it's also easy to edit for print.
https://thesanguy.com/2013/09/11/useful-brocade-fos-cli-commands/
addme: https://sethrobertson.github.io/GitFixUm/fixup.html