salewski

;; SPDX-FileCopyrightText: <text> © 1985, 1989, 1992-1994, 2000-2020 Free Software Foundation, Inc.
;;     © 2020 Alan D. Salewski <ads@salewski.email> </text>
;;
;; SPDX-License-Identifier: GPL-3.0-or-later

;; This file IS NOT part of GNU Emacs, but it is derived from the function
;; `maximize-window', which IS part of GNU Emacs. At the time of writing
;; (2020-08-27) the `maximize-window' function is defined in the Emacs file
;; 'window.el':
;;

salewski

# SPDX-FileCopyrightText: <text>
#     © 2024 Alan D. Salewski <ads@salewski.email>
# </text>
#
# SPDX-License-Identifier: GPL-2.0-or-later

salewski

Compressing the Unicode names lists

Perhaps the most prominent, if not the most important, property of any Unicode character is its name. These immutable labels are much more descriptive than their hexadecimal codes.

But these names aren’t used often in most programming languages. Why is that? Perhaps the biggest reason why is the [sheer size of the list of names][UnicodeData.txt], weighing 1.769 MB; embedding such a file in every language runtime would impose a large burden on resource-constrained environments such as mobile devices. But can this burden be mitigated with data compression? How compressible is this list? Can we create a [succinct data structure][succinct] from this list?

Precedent for this project comes from GNU Uniname, a GNU Project utility, written by Bill Poser of British Columbia, which can look up the characters of names and the names of characters. Its source may be read in [uniname.c][] and [test-uninames.c][]. According to its documentation, the size of the compiled program

salewski

# -*- conf-unix -*-

# snippet for your ~/.gitconfig file
# provides two new git aliases:
#     * ads-push-all-from-upstream
#     * ads-push-all-from-upstream-force
# ...
[alias]
# ...

salewski

# Downloads and unpacks (in subdirs of the current directory) all of the
# Debian source packages associated with the *-dbgsym and *-dbg packages whose
# symbols are referenced by the specified program ('/usr/bin/someprogram' in
# the snippet below). Takes pains to ensure the downloaded source packages are
# at the exact same version number as the corresponding *-dbgsym/*-dbg
# packages.
#
# Assumes you are in the directory beneath which you would like the sources to
# be unpacked (by 'apt-get source'). Each unique package will have a separate
# subdirectory. We are not clever about avoiding duplicates, but 'apt-get source'

salewski

;; The variable ‘emacs-major-verseion’ and the variable ‘emacs-minor-version’
;; both first existed in GNU Emacs 19.23.
;;
;; Since GNU Emacs 24.3, the function ‘toggle-read-only’ is obsolete; the
;; recommendation is to use the function ‘read-only-mode’ instead. Note that
;; ‘read-only-mode’ is, by default, set to "C-x C-q", but I’ve got 20+ years
;; of muscle memory in my hands that want to use "C-c r" to toggle the
;; "read-onlyness" of the buffer.
;;
;; See also the function ‘view-mode’ and the variable ‘view-read-only’; having

salewski

;; I've customzied `org-log-note-headings' to add a 'created' heading. This
;; allows us to have a 'CREATED' timestamp automatically inserted into the
;; LOGBOOK when creating a new TODO item.
;;
;; This technique learned from:
;;
;;     http://lists.gnu.org/archive/html/emacs-orgmode/2009-11/msg00914.html
;;
;; for TODOs created in the buffer
;;

salewski

'''
Title:     SSHtranger Things
Author:    Mark E. Haase <mhaase@hyperiongray.com>
Homepage:  https://www.hyperiongray.com
Date:      2019-01-17
CVE:       CVE-2019-6111, CVE-2019-6110
Advisory:  https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt
Tested on: Ubuntu 18.04.1 LTS, OpenSSH client 7.6p1

We have nicknamed this "SSHtranger Things" because the bug is so old it could be

salewski

aws ec2 register-image --ena-support --sriov-net-support simple --virtualization-type hvm --name ami-base-centos --block-device-mappings '[{"DeviceName":"/dev/sda1","Ebs":{"SnapshotId":"snap-05168016823a3fc9f"}}]' --root-device-name /dev/sda1 --architecture x86_64 --profile rdc-com-production

aws ec2 create-tags --tags Key=OS,Value=CentOS Key=Application,Value=base --resources ami-423a593d  --profile rdc-com-production

salewski

! --------------------------------------------------------------------------------
! This example configuration shows what WE did to get Amazon VPC working with our
! ASAs.  We use version 8.3(1). This config has not been reviewed or otherwise
! blessed in any way by anyone at Amazon.  YMMV.
! 
! It differs from Amazon's supplied config by using two different sets of
! crypto maps and ACLs, so it brings both tunnels up simultaneously.
!
! For the purposes of the example, the physical datacenter network is 172.16.1.0/24
! and the VPC is 10.0.0.0/16.