TCSH is an enhanced but completely compatible version of the Berkeley UNIX C shell, csh(1). It is a command language interpreter usable both as an interactive login shell and a shell script command processor. | TCSH 1 TCSH 1 NAME tcsh - C shell with file name completion and command line editing SYNOPSIS tcsh -bcdefFimnqstvVxX -Dname value arg . tcsh -l DESCRIPTION tcsh is an enhanced but completely compatible version of the Berkeley UNIX C shell csh 1 . It is a command language interpreter usable both as an interactive login shell and a shell script command processor. It includes a command-line editor see The command-line editor programmable word completion see Completion and listing spelling correction see Spelling correction a history mechanism see History substitution job control see Jobs and a C-like syntax. The NEW FEATURES section describes major enhancements of tcsh over csh 1 . Throughout this manual features of tcsh not found in most csh 1 implementations specifically the csh are labeled with and features which are present in csh 1 but not usually documented are labeled with u . Argument list processing If the first argument argument 0 to the shell is - then it is a login shell. A login shell can be also specified by invoking the shell with the -l flag as the only argument. The rest of the flag arguments are interpreted as follows -b Forces a break from option processing causing any further shell arguments to be treated as nonoption arguments. The remaining arguments will not be interpreted as shell options. This may be used to pass options to a shell script without confusion or possible subterfuge. The shell will not run a set-user ID script without this option. -c Commands are read from the following argument which must be present and must be a single argument stored in the command shell variable for reference and executed. Any remaining arguments are placed in the argv shell variable. -d The shell loads the directory stack from .cshdirs as described under Startup and shutdown whether or not it is a login shell. -D name value Sets the environment variable name to value. Domain OS only -e The shell exits if any invoked command terminates abnormally or .
