Hacks - Revision history

Johnno: /* Using rsync with FAT volumes (USB sticks and SD cards) */

2026-01-09T01:26:51Z

Using rsync with FAT volumes (USB sticks and SD cards)

Johnno: /* Fancy PostgreSQL prompts */

2024-12-16T21:10:29Z

Fancy PostgreSQL prompts

Johnno at 21:10, 16 December 2024

2024-12-16T21:10:12Z

Johnno: /* Turn off the shitty default "visual" mouse mode in vim */

2024-06-12T23:57:32Z

Turn off the shitty default "visual" mouse mode in vim

Johnno: /* Ditch Snap */

2023-07-15T03:50:19Z

Ditch Snap

Johnno at 03:47, 16 November 2022

2022-11-16T03:47:51Z

Johnno at 02:46, 16 November 2022

2022-11-16T02:46:45Z

Johnno at 21:38, 12 July 2022

2022-07-12T21:38:41Z

Johnno: /* Use etckeeper */

2022-04-19T00:53:04Z

Use etckeeper

Johnno: /* Clean out your revoked and expired PGP keys */

2021-10-05T23:34:49Z

Clean out your revoked and expired PGP keys

@@ Line 193: / Line 193: @@
 But that's probably not all, because rsync will probably complain that it can't set the timestamp. You'll need to mount your USB stick so it ignores a user check that FAT can't enforce:
   mount -o remount,allow_utime=2 /mnt/usb-stick
 ==Notes==
 <references/>

@@ Line 183: / Line 183: @@
 Escape codes use '%' character, documented here: [https://www.postgresql.org/docs/current/app-psql.html#APP-PSQL-PROMPTING Psql Prompts].
-==Using rsync with FAT volumes (USB sticks and SD cards)
+==Using rsync with FAT volumes (USB sticks and SD cards)==
 You might have noticed that all your files have today's timestamp on them when using rsync thus:

@@ Line 183: / Line 183: @@
 Escape codes use '%' character, documented here: [https://www.postgresql.org/docs/current/app-psql.html#APP-PSQL-PROMPTING Psql Prompts].
 ==Notes==
 <references/>

@@ Line 84: / Line 84: @@
 == Turn off the shitty default "visual" mouse mode in vim ==
-Christ. Add this to ~/.vimrc
+Add this to <code>/etc/vim/vimrc.local</code> file:<ref>Böhnke, H (16 March 2019). [https://unix.stackexchange.com/a/506723 Answer 506723] on "Disabling mouse support in vim in a gnome-terminal environment", Unix & Linux Stack Exchange.</ref>
-  set mouse-=a
 == Too many leftover git branches merged into master? Nukem! ==

@@ Line 118: / Line 118: @@
 == Ditch Snap ==
-Installing Firefox properly
+=== 1. Install Firefox properly ===
 Ubuntu 22.04 replaces the Firefox Debian package with a pseudo-package that installs it using Snap. This is no longer optional, and it is also stupid, annoying, slow, and potentially insecure for many reasons.<ref>Brandon Hopkins. [https://techhut.tv/flatpak-vs-snap-vs-appimage/ "Flatpak vs. Snap vs. AppImage - Linux Packaging Benchmarks"] TechHut, April 2022.</ref> Several Firefox extensions that need to talk to other applications don't currently work in Snap installed Firefox, including things like Zotero and Keepass.
@@ Line 138: / Line 138: @@
 echo 'Package: firefox*
 Pin: release o=LP-PPA-mozillateam
-Pin-Priority: 501' > /etc/apt/preferences.d/mozillateamppa
+Pin-Priority: 501' > /etc/apt/preferences.d/mozillateam-ppa.pref
 </syntaxhighlight>

← Older revision		Revision as of 03:47, 16 November 2022
Line 150:		Line 150:

	Escape codes use '%' character, documented here: [https://www.postgresql.org/docs/current/app-psql.html#APP-PSQL-PROMPTING Psql Prompts].		Escape codes use '%' character, documented here: [https://www.postgresql.org/docs/current/app-psql.html#APP-PSQL-PROMPTING Psql Prompts].
		+
		+
		+	==Notes==
		+
		+	<references/>

← Older revision		Revision as of 02:46, 16 November 2022
Line 140:		Line 140:
	Pin-Priority: 501' > /etc/apt/preferences.d/mozillateamppa		Pin-Priority: 501' > /etc/apt/preferences.d/mozillateamppa
	</syntaxhighlight>		</syntaxhighlight>
		+
		+	==Fancy PostgreSQL prompts==
		+
		+	For a coloured prompt including what user, connection, and host you're on, stick this in ~/.psqlrc or /etc/postgresql-common/psqlrc:
		+
		+	\set PROMPT1 '%[%033[1m%](%n@%[%033[1;35m%]%M%[%033[m%]%[%033[1m%] on %[%033[1;31m%]%`hostname`%[%033[m%]%[%033[1m%]) \n%/%R%#%[%033[m%] '
		+	\set PROMPT2 '%[%033[1m%]%/%R%#%[%033[m%] '
		+	\set PROMPT3 '%[%033[1m%]>>%[%033[m%] '
		+
		+	Escape codes use '%' character, documented here: [https://www.postgresql.org/docs/current/app-psql.html#APP-PSQL-PROMPTING Psql Prompts].

← Older revision		Revision as of 21:38, 12 July 2022
Line 115:		Line 115:
	sudo apt install cuetools		sudo apt install cuetools
	cuetag cdimage.cue *.flac		cuetag cdimage.cue *.flac
		+
		+	== Ditch Snap ==
		+
		+	Installing Firefox properly
		+
		+	Ubuntu 22.04 replaces the Firefox Debian package with a pseudo-package that installs it using Snap. This is no longer optional, and it is also stupid, annoying, slow, and potentially insecure for many reasons.<ref>Brandon Hopkins. [https://techhut.tv/flatpak-vs-snap-vs-appimage/ "Flatpak vs. Snap vs. AppImage - Linux Packaging Benchmarks"] TechHut, April 2022.</ref> Several Firefox extensions that need to talk to other applications don't currently work in Snap installed Firefox, including things like Zotero and Keepass.
		+
		+	It also completely fails to find and import any existing Firefox profile. Snap apps for whatever stupid reason keep settings in a hard-coded ~/snap folder. Who thought that was a good idea? What's wrong with ~/.config and/or ~/.local, or couldn't they even use ~/.snap? Good grief.
		+
		+	Luckily, we can use the Mozilla Team PPA instead.<ref>Ji M. [https://ubuntuhandbook.org/index.php/2022/04/install-firefox-deb-ubuntu-22-04/ "How to Install Latest Firefox as classic Deb in Ubuntu 22.04"] Ubuntu Handbook, April 2022.</ref> In summary:
		+	<syntaxhighlight lang="bash">
		+	# Remove Firefox entirely:
		+	snap remove firefox
		+	apt remove firefox
		+
		+	# Add the Mozilla Team PPA and install:
		+	add-apt-repository ppa:mozillateam/ppa
		+	apt update
		+	apt install -t 'o=LP-PPA-mozillateam' firefox
		+
		+	# Pin to the Mozilla Team PPA so we never get the Snap pseudo-package
		+	echo 'Package: firefox*
		+	Pin: release o=LP-PPA-mozillateam
		+	Pin-Priority: 501' > /etc/apt/preferences.d/mozillateamppa
		+	</syntaxhighlight>

@@ Line 17: / Line 17: @@
 === Fix the daily commit bug ===
-Unfortunately since about 18.04 there is a bug where a systemd timer and a cron.daily task compete to commit a daily commit if needed; unfortunately one of them doesn't bother to check the {{path|etckeeper.conf}} file to see whether you've disabled it. If you have {{path|DISABLE_DAILY_AUTOCOMMITS=1}} in your config file, then you probably don't want daily auto commits. If this is so, run this to disable the systemd timer:
+Unfortunately since about 18.04 there is a bug where a systemd timer and a cron.daily task compete to commit a daily commit if needed; unfortunately one of them doesn't bother to check the {{path|etckeeper.conf}} file to see whether you've disabled it. If you have <code>DISABLE_DAILY_AUTOCOMMITS=1</code> in your config file, then you probably don't want daily auto commits. If this is so, run this to disable the systemd timer:
   systemctl disable --now etckeeper.timer

@@ Line 49: / Line 49: @@
 Spring-clean your gpg database, make it go faster. Just go:
-  gpg --delete-keys `gpg --list-keys|grep -P 'revoked|expired'|awk -F/ '{print $2}'|awk '{print $1}'`
+  gpg --delete-keys $(gpg --list-public-keys|grep -PB1 'expired|revoked'|grep '^\s')
 Obviously. If you can't be arsed confirming each key, add <tt>--batch --yes</tt> to the first gpg call.