With a label argument, the shell executes a goto label when an interrupt is received or a child process ter- minates because it was interrupted. The elements of the directory stack are numbered from 0 starting at the top. With no arguments, exchange the top two elements. Multiword values are displayed as a parenthesized list. A space-separated list of words enclosed in parentheses.
Values are command and filename expanded before being assigned.
With no arguments, setenv displays all environment variables. With both VAR and word arguments setenv sets the environment variable NAME to the value word , which must be either a single word or a quoted string. In addition, the shell sets the PWD environment variable from the csh variable cwd whenever the latter changes. The components of argv, or variable , if supplied, are shifted to the left, discarding the first com- ponent. It is an error for the variable not to be set, or to have a null value.