The C-shell command interpreter can be invoked as follows:
csh [
options
] [arguments
]
csh uses syntax resembling C and executes commands from a terminal or a file. Options -n , -v , and -x are useful when debugging scripts.
Allow the remaining command-line options to be interpreted as options to a specified command, rather than as options to csh itself.
Execute commands located in first filename argument.
Exit if a command produces errors.
Fast start up; start csh without executing .cshrc or .login .
Invoke interactive shell (prompt for input).
Parse commands but do not execute.
Read commands from the standard input.
Exit after executing one command.
Display commands before executing them; expand history substitutions but don't expand other substitutions (e.g., filename, variable, and command). Same as setting verbose .
Same as -v , but also display .cshrc .
Display commands before executing them, but expand all substitutions. Same as setting echo . -x is often combined with -v .
Same as -x , but also display .cshrc .