GPG: no default secret key gpg

In Fedora, you may have both gpg and gpg2. The secret keys are stored in different ways.

Try

which gpg gpg2

You might get:

/usr/bin/gpg
/usr/bin/gpg2

If you do have both, run:

gpg2 --list-secret
gpg --list-secret

Suppose your gpg2 --list-secret returns nothing. You can then export from gpg then import to gpg2 like so:

gpg --export-secret-keys -a > secret.asc
gpg2 --import secret.asc

Note that pass phrase is required to export.
Finally, verify the import with

gpg2 --list-secret

You may encounter the error message: Unknown IPC command. The quick fix is set the environment variable LC_ALL=C

Chewable Fedora Atomic

Fedora Atomic is an operating system targets to containers. However, the documentation, for me, is very hard to read. In this document, I will share my adventure with Fedora Atomic, starting with post installation.

I have installed Fedora Atomic, now what?

Let’s say you want to install the tree and docker-compose for better understanding the directory structure of your new host; you also need to ping a host every hour; and of course, you want your shiny new docker application to be deploy to this machine.

Package Install with rpm-ostree

Startup Sequences of Shells

It is quite confusing if you need to work with multiple, so I make following tables.

zsh

From section STARTUP/SHUTDOWN FILES of man page zsh

Interactive Login	Non-Interactive Login	Interactive Non-Login	Non-Interactive Non-Login
/etc/zshenv $ZDOTDIR/.zshenv
/etc/zprofile $ZDOTDIR/.zprofile		–
/etc/zshrc $ZDOTDIR/.zshrc	–	/etc/zshrc $ZDOTDIR/.zshrc	–
/etc/zlogin $ZDOTDIR/.zlogin		–

bash

From section INVOCATION of man page bash

default

Interactive Login	Non-Interactive Login	Interactive Non-Login	Non-Interactive Non-Login
/etc/profile Then the first one that is readable amongst: ~/.bash_profile ~/.bash_login ~/.profile		~/.bashrc	$BASH_ENV

bash as sh

Interactive Login	Non-Interactive Login	Interactive Non-Login	Non-Interactive Non-Login
/etc/profile ~/.profile		–
$ENV	–	$ENV	–

tcsh

tcsh does not seem care the interactive mode when start up. if environment version has lf, then csh.login and ~/.login will run before csh.cshrc and ~/.tcshrc, respectively.
From section Startup and shutdown of man page tcsh

Login	Non-Login
/etc/csh.cshrc
/etc/csh.login	–
First one that is readable amongst: ~/.tcshrc ~/.cshrc
~/.history ~/.login ~/.cshdirs	–

^A is shown when typing Ctrl-A zsh

zsh has a nasty/convenient behaviour: it will set vi binding for you if one of environment VISUAL or EDITOR has the command start with vi.

If you don’t like this, run bindkey -e to use the emac mode instead. Put it in your zshrc.