Invoking the Shell
A shell command interpreter can be invoked as follows:
csh [options] [arguments] tcsh [options] [arguments]
csh and tcsh use syntax resembling C and execute commands from a terminal or a file. Options -n, -v, and -x are useful when debugging scripts.
Options
- -b
Allow the remaining command-line options to be interpreted as options to a specified command, rather than as options to csh itself.
- -c
Execute command specified following the argument.
- -d
Load directory stack from
~/.cshdirs
even if not a login shell. (tcsh)- -e
Exit if a command produces errors.
- -f
Fast startup; start without executing .cshrc or .tcshrc.
- -i
Invoke interactive shell (prompt for input).
- -l
Login shell (must be the only option specified).
- -m
Load
~/.tcshrc
even if effective user is not the owner of the file. (tcsh)- -n
Parse commands, but do not execute.
- -s
Read commands from the standard input.
- -t
Exit after executing one command.
- -v
Display commands before executing them; expand history substitutions, but not other substitutions (e.g., filename, variable, and command). Same as setting verbose.
- -V
Same as -v, but also display .cshrc.
- -x
Display commands before executing them, but expand all substitutions. Same as setting echo.
- -X
Same as -x, but also display .cshrc.
Arguments
Arguments are assigned, in order, to the positional parameters $1, $2, and so on. If the first argument is an executable script, commands are read from it, and remaining arguments are assigned to $1, $2, and so forth. ...
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