The file present in =~/.config/fish/config.fish= is the configuration file for the [[https://fishshell.com/][fish shell]]. It contains custom functions, environment variables and abbreviations.
Just in case, we might need sometimes to declare the fish function =fish_title= as =true=, so let’s do so.
When accessing from a remote machine our computer from Emacs, tramp needs a precise shell appearance: a simple =$= followed by a space after which to put the commands it needs to execute, and nothing else. Due to this, let’s deactivate and redefine some of the functions defining the appearance of fish.
Now, there is only one function I modify when it comes to the appearance of fish when I’m the one using it: the ~fish_greeting~ function. I use it to give me an overview of my computer’s status, including its hostname, uptime, disks usage, ram usage, swap usage, and networking.
#+BEGIN_SRC fish
set RED '\033[0;31m'
set GREEN '\033[0;32m'
set NC '\033[0m'
function display_slider # used total
set -l slider_length 38
set -l used $argv[1]
set -l total $argv[2]
set -l used_slider (math -s0 "($used * $slider_length) / $total")
set -l unused_slider (math -s0 "$slider_length - $used_slider")
echo -en "["
echo -en $RED
echo -en (string repeat -n $used_slider '=')
echo -en $GREEN
echo -en (string repeat -n $unused_slider '=')
echo -en $NC
echo -en "]"
end
function fish_greeting
set -l ruler_length 79
set -l ruler (string repeat -n $ruler_length "=")
set -l osname (cat /etc/os-release | grep -i pretty_name | sed 's/.*"\(.*\)".*/\1/')
The theme I use for fish is [[https://github.com/oh-my-fish/theme-bobthefish][bobthefish]], which by default puts a really long timestamp to the right of the prompt. I want something shorter, so here is the variable to set, using the format specified in ~date(1)~.
Now, let’s declare our editor of choice, EmacsClient; not Emacs itself since it will most often be just quick edits, nothing too heavy, if it is called from the ~EDITOR~ variable (from Git, for example), or from the ~VISUAL~ variable.
#+BEGIN_SRC fish
set -gx EDITOR emacsclient -c
set -gx VISUAL emacsclient -c
#+END_SRC
We also need to set the path to the Dart SDK.
#+BEGIN_SRC fish
set -gx DART_SDK /opt/dart-sdk/bin
#+END_SRC
And we also need to specify where the Android SDK it located.
#+BEGIN_SRC fish
set -gx ANDROID_HOME $HOME/Android/Sdk
#+END_SRC
Still related to Dart and Flutter development,
#+BEGIN_SRC fish
set -gx CHROME_EXECUTABLE /usr/bin/chromium
#+END_SRC
Next, we have two variables from Deno, the Node.js destroyer. Its base directory will be set in my XDG config directory, and its binaries will be located in my local binaries directory (see below).
#+BEGIN_SRC fish
set -gx DENO_DIR $HOME/.config/deno
set -gx DENO_INSTALL_ROOT $HOME/.local/bin/deno
#+END_SRC
Finally, some development packages require the =PKG_CONFIG_PATH= to be set, so let’s do so.
#+BEGIN_SRC fish
set -gx PKG_CONFIG_PATH /usr/local/lib/pkgconfig/ $PKG_CONFIG_PATH
Some global variables might sometimes be needed and need to be modified. This is for example the case with my ~PATH~ variable in which I add Rust’s Cargo’s binaries, Go’s binaries and my own executables. And of course, don’t forget to add the already existing ~PATH~.
Here I have some abbreviations which are quite useful when performing some system monitoring. With =df=, we can get an overview of our filesystem usage, while with =diskspace= we get some more precise information. =meminfo= is a call to =free= with sane defaults, and similar to =meminfo=, we also have =gpumeminfo= so we can get a quick look at the memory-related logs of our X session. I also declared =cpuinfo= an alias of =lscpu= in order to keep consistent with =meminfo=. =pscpu= gives us information on what the CPU is running right now, and =pscpu10= limits that to the top 10 threads. Similarly, =psmem= gives us information on the memory usage of the current threads, and =psmem10= only the ten most important threads in terms of memory usage.
The first command is =remove= which removes a package from my system, as well as its dependencies no longer needed. =p=. =pacman='s or =yay='s. This is why I simply type =purge=. And if I want to simply seach among the =pacman= repos, I can type =search=. Otherwise, if I want to include AUR results, I’ll use =yay=.
I don’t have the muscle memory of =systemctl=. So instead, I simply type =c= when I want to do something user service related. And if I want to manipulate system services, I can instead type a simple capital =S=.
I greatly prefer to use Emacsclient as my main text editor; Emacs has basically all I need. So, it's only normal I have an abbreviation to launch a new instance of it. However, in a graphical environment, this will launch a new graphical window of Emacs. To launch a terminal instance, I'll use ~enw~ (~nw~ stands for the option “nowindow” ~-nw~ of Emacs). I also wish to completely stop using other text editors, such as ~vi~, ~vim~, ~nano~ and ~ed~, so let's all add their command as an abbreviation for Emacs.
And let's face it: we all at one point just wanted to commit our code without thinking about the message, to just get over with it. Don't worry, I got you covered.
Yes, although I use org-mode, I still have some use for LaTeX, especially when it comes to PDF exports of my org files. Hence why I use the LaTeX package manager. It is recommended to use ~tllocalmgr~ instead of ~tlmgr~, but I can never remember the command, and the latter is faster to type, so time for an abbreviation. Same goes for ~texhash~ which must be run as sudo.
Some commands can be quite dangerous when not used properly, which is why I added default flags and options so I can get warnings before things get ugly. The =-i= and =-I= add prompts in case we might not want to do what we asked the shell to do. Notice =lns= which creates symlinks, =rmd= which removes directories, =rmf= which forces deletion, and =rmdf= which forces the delition of a directory. Notice also the =--preserve-root= which will prevent me from accidentally removing the root folder. I added the same option to =chgrp=, =chmod=, and =chown=.
Let's admit it, we all make typos from time to time in the shell, and some are recurrent enough we make abbreviations or aliases of the correct command. Well, I have some of my abbreviations which were make exactly because of this. Sometimes for some reasons, my brain makes me write ~clean~ instead of ~clear~. So, let's just replace the former by the latter. I'm also very bad at typing ~exit~. And sometimes I suck at typing ~htop~. ~q~ isn't a typo per se, instead just a habit I have.
Here you will find various commands related to media in general. the first one is a command to play some chillhop from the [[https://www.youtube.com/user/Chillhopdotcom][Chillhop YouTube channel]]'s livestream.
When it comes to mpv, I do not want to force it to open a graphical window if for example I want to listen to an audio file. I also do not want any border on that window. So, I declared this abbreviation.
#+BEGIN_SRC fish
abbr mpv 'mpv --no-border --force-window=no'
#+END_SRC
When I want to download a song from YouTube, I'll just use the command ~flac videoIdentifier~ to get it through ~youtube-dl~.
Some sane default options for ~sxiv~, a simple X image Viewer. This includes playing GIFs and not displaying the filename below. Sxiv will also open in fullscreen and will fit the displayed image to the frame. I also abbreviated ~feh~ to sxiv, old habits die hard.
#+BEGIN_SRC fish
abbr sxiv 'sxiv -abfs f'
abbr feh 'sxiv -abfs f'
#+END_SRC
Finally, let's declare the following abbreviation that will launch an mpv instance displaying my webcam:
First, I make it so that ~sudo~ comes with the ~-A~ switch in order to call my custom graphical script for getting my password (see [[file:bin.org::#Askpass-d0d7a8c0][askpass]]). I also made it so ~please~ is an equivalent to ~sudo -A~ as a joke.
It seems it's just like many other people, but I cannot for the life of me remember the syntax of ~tar~. So, I made the following abbreviations, and one day hopefully, after seeing the abbreviations' expansion over and over I'll remember the command like I did for the abbreviation of ~remove~ (see [[#Abbreviations-System_management_(packages_and_services)-Package_management-efbcdf0f][Package management]]).
Next, we have some NordVPN-related shortcuts. The first one is a simple abbreviation to =nordvpn=. The second one is a shortcut to connect to a server, and to disconnect from the current server. I also have a couple of shortcuts to quickly connect to some preselected countries, mainly France, Germany, Japan and the US.
