From r/ProgrammerHumor:

Facts:

1. write software
2. finish writing software
3. language/libraries you used get updated with new features, deprecates old/bad things

You now have a choice:

• go to the trouble of updating your entire program to use these new features and get rid of deprecated stuff, taking a lot of time and possibly messing up a ton of dependencies, or
• continue to use old stuff and accept the associated risks, for no effort

Most companies everywhere choose 2, incurring debt as technology marches on. It becomes a game of how long they can go until option 1 becomes absolutely necessary

run script with the default ruby version

• option A:

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#!/usr/bin/env -S ${HOME}/.rvm/bin/rvm-shebang-ruby
puts RUBY_VERSION

• option B:

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#!/usr/bin/env -S ${HOME}/.rvm/bin/rvm default do ruby
puts RUBY_VERSION

run script with desired ruby version

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#!/usr/bin/env -S ${HOME}/.rvm/bin/rvm ruby-3.0.0 do ruby
puts RUBY_VERSION

fix relative path script calls

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./apps/myscript.rb   # works
~/apps/myscript.rb   # works
apps/myscript.rb     # hangs!

edit ~/.rvm/bin/rvm-shebang-ruby and modify the last case with *rvm-shebang-ruby:

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#rvm_promptless=1 rvm rvmrc load "$(dirname "$(which "$1")")" > /dev/null 2>&1
folder="$(dirname "$(which "$1")")"
[ "$folder" = "." ] && folder=$PWD
folder="$(realpath -s "$folder")"
rvm_promptless=1 rvm rvmrc load "$folder" > /dev/null 2>&1

• http://www.registroimprese.it (ricerca per anagrafica)
• http://www.inipec.gov.it/cerca-pec (ricerca per anagrafica e anche per CF)

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apt install fonts-noto-color-emoji

Source: fosslinux

Resources

• HP, Tutorial, FAQ, Docs
• awesome fish
• fish-shell cookbook
• Wikipedia

Extensions

• fisher plugin manager (list)

  • anicode find arbitrary unicode characters matching a search pattern
  • autoenvstack folder custom env set/restore
  • cprintf printf with colors
  • g2 friendly git command line client
  • getopts command line options parser
  • gitignore create .gitignore files from https://www.gitignore.io templates
  • paths create or append to environment variables
  • rvm rvm support
  • shark sparkline generator (cli histograms)
  • spin background job spinner
  • termcolours list available terminal colour names
  • upto change to the closest parent folder by name

• oh-my-fish plugin manager (list)

  • peco interactive history search
  • dpaste quickly share text on pastebin sites
  • git-flow completion support for git-flow
  • weather
  • bundler use Ruby's Bundler automatically for some commands
  • battery battery status utility
  • plugin-docker-machine easy machine set env

• prompt themes (see powerline and nerd fonts):

  • oh-my-fish bobthefish: powerline-style, git-aware theme
  • fisher metro powerline prompt optimized for speed and space
  • fisher nitro color-smart powerline prompt based in Metro
  • fisher segment powerline prompt builder

• midnight commander wrapper

• RVM integration via lunks/fish-nuggets

Prompt power-up

• decompress fish_config.7z attachment in ~/.config/fish/
• curl -L https://get.oh-my.fish | fish
• omf install bobthefish
• download and install Meslo font from nerd-fonts
• set MesloLGMDZ Nerd Font Mono font for your terminal
• put set -g theme_nerd_fonts yes in your ~/.config/fish/config.fish
• customize fish_greeting.fish and fish_right_prompt.fish in ~/.config/fish/functions/

On cygwin under windows you can install DejaVu Sans Mono ttf powerline font, and set fish as the default shell.

In the attached file there is a simple prompt with git support.

Commands

• fish_update_completions -- scan man pages for completion tips
• env VAR1=xxx VAR2=yyy command arg1 arg2 ... -- run command with env vars