$ curl cheat.sh/
# csh
# The shell (command interpreter) with C-like syntax.
# See also: `tcsh`.
# More information: <https://www.mkssoftware.com/docs/man1/csh.1.asp>.

# Start an interactive shell session:
csh

# Start an interactive shell session without loading startup configs:
csh -f

# Execute specific [c]ommands:
csh -c "echo 'csh is executed'"

# Execute a specific script:
csh path/to/script.csh

$
Follow @igor_chubin cheat.sh tldr