My private motto has always been “Behind every silver lining is a cloud.”.
— Glenn Gould
TIL about bundle _VERSION_ … to force Bundler to use VERSION of Bundler, regardless of whatever Bundler guesses that it should be using.
E.g. bundle _2.5.17_ … will only use v2.5.17 of Bundler and will fail if it cannot.
“Where did the art go?”
Bah. All these “low footprint” Docker images turn you into a Linux distro builder having to assemble a list of packages that you need/want.
TIL, services fronted by Cloudflare won’t let you use “/etc/passwd” or “/etc/group” in their input.
🙄
Do not use pyenv, rbenv, non-root-user whatever language runtime manager.
Build and lock down your runtimes. There should be a sudo chmod -R ugo-w …; sudo chown -R nobody: … somewhere in the build/install process.
I semi-regularly use the . (plain files) and * (executable files) Zsh glob qualifiers.
(The way to remember these is to think of ls output.)
Why, yes, I am trawling through the Zsh docs looking for means of picking out a subset of files out of a directory, why do you ask?
Zsh D glob qualifier:
sets the GLOB_DOTS option for the current pattern
∙> echo *git*
zsh: no matches found: *git*
1> echo *git*(D)
.git .gitattributes .github .gitignore
∙>
Zsh N glob qualifier:
sets the NULL_GLOB option for the current pattern
•> echo nosuchfile*
zsh: no matches found: nosuchfile*
1> echo nosuchfile*(N)
•>
From the Zsh documentation:
If a word begins with an unquoted ‘=’ and the EQUALS option is set, the remainder of the word is taken as the name of a command. If a command exists by that name, the word is replaced by the full pathname of the command.
•> echo =vim
/Users/elliot/opt/bin/vim
George Antheil’s Ballet Mécanique, which requires 16 synchronized player-pianos was never fully realized in his lifetime. (backstory) 🎵
TIL that the /lib/systemd/systemd --user process for a user with linger enabled does not automatically pick up group membership changes. Also, there does not appear to be a clean way to get it to pick up the changes, e.g. systemctl --user reexec doesn’t work. Resorted to killing it and relogging in.
Talking about music is like dancing about architecture.
I first heard this epigram from Laurie Anderson, but its origin is seriously complicated.
I find it weird that /var/lib/systemd/linger contains usernames instead of UIDs.
> systemctl status non_existent.slice
● non_existent.slice
Loaded: loaded
Active: inactive (dead)
Ummm… say what? Where exactly did you load that slice from, systemd?
Yeah, I typo’d the actual name and was surprised at the output.