fish, aka friendly interactive shell, is an open source programming language created in 2005.
git clone https://github.com/fish-shell/fish-shell| #120on PLDB | 19Years Old | 0Repos |
The friendly interactive shell (fish) is a Unix shell that attempts to be more interactive and user-friendly than those with a longer history (i.e. most other Unix shells) or those formulated as function-compatible replacements for the aforementioned (e.g. zsh, the Falstad shell). Read more on Wikipedia...
echo "Hello, world!"
#!/usr/bin/env fish
echo "Hello World"
function eval -S -d "Evaluate parameters as a command"
# If we are in an interactive shell, eval should enable full
# job control since it should behave like the real code was
# executed. If we don't do this, commands that expect to be
# used interactively, like less, wont work using eval.
set -l mode
if status --is-interactive-job-control
set mode interactive
else
if status --is-full-job-control
set mode full
else
set mode none
end
end
if status --is-interactive
status --job-control full
end
echo "begin; $argv ;end eval2_inner <&3 3<&-" | . 3<&0
set -l res $status
status --job-control $mode
return $res
end
string replace --regex '.*?\.(.*)' '$1' a.b.c #b.c
string replace --regex '.*\.(.*)' '$1' a.b.c #c
string replace --regex '(.*)\..*' '$1' a.b.c #a.b
string replace --regex '(.*?)\..*' '$1' a.b.c #a| Feature | Supported | Token | Example |
|---|---|---|---|
| Strings | ✓ | " | "Hello world" |
| Print() Debugging | ✓ | echo | |
| Line Comments | ✓ | # | # A comment |
| Comments | ✓ | ||
| Semantic Indentation | X |