Tcsh

# Install on macOS
brew install tcsh

# Install on Debian/Ubuntu
sudo apt install tcsh

# Install on Fedora
sudo dnf install tcsh

# FreeBSD (pre-installed)
# tcsh is available as /bin/tcsh

# Set as default shell
chsh -s $(which tcsh)

#!/bin/tcsh

# Variables (set for local, setenv for environment)
set name = "World"
setenv PATH "$HOME/bin:$PATH"

# Arrays (1-indexed)
set fruits = (apple banana cherry)
echo $fruits[1]  # apple

# Conditionals (C-style)
if ($name == "World") then
    echo "Hello, World!"
endif

# Loops
foreach fruit ($fruits)
    echo $fruit
end

# C-style for loop
@ i = 1
while ($i <= 5)
    echo $i
    @ i++
end

# ~/.tcshrc - Main configuration file
# ~/.login - Login shell only

# Custom prompt with colors
set prompt = "%B%n@%m%b:%~%# "

# Enable features
set autolist        # List completions automatically
set complete = enhance  # Enhanced completion
set correct = cmd   # Command spelling correction
set history = 1000  # History size

# Aliases
alias ll 'ls -la'
alias h 'history 25'

# Bindkey for editing
bindkey -e  # Emacs keybindings
# bindkey -v  # Vi keybindings