AT&T UNIX™PC Unix System V Users Manual - tenox

KSH ( 1 ) KSH(l)
?, the remainder of this word is used as a prompt when the
shell is interactive. If the given file descriptor is open for
writing and is a terminal device then the prompt is placed
on this unit. Otherwise the prompt is issued on file
descriptor 2. The return code is 0 unless an end-of-file is
encountered.
readonly [ name ••• ]
The given names are marked readonly and these names
cannot be changed by subsequent assignment.
return [ n ]
Causes a shell function to return to the invoking script
with the return status specified by n. If n is omitted then
the return status is that of the last command executed. If
return is invoked while not in a function then it is the
same as an exit.
set [ -aefhkmnotuvx ] [ - o option ••• ] [ arg ••• ]
The flags for this command have meaning as follows:
-a All subsequent parameters that are defined are
automatically exported.
-e If the shell is non-interactive and if a command
fails, execute the ERR trap, if set, and exit
immediately. This mode is disabled while reading
-f
-h
profiles.
Disables file name generation.
Each command whose name is an identifier
becomes a tracked alias when first encountered.
-k All parameter assignment arguments are placed in
the environment for a command, not just those
that precede the command name.
-m Background jobs will run in a separate process
group and a line will print upon completion. The
exit status of background jobs is reported in a
completion message. On systems with job control,
this flag is turned on automatically for interactive
shells.
-n Read commands but do not execute them.
- o The following argument can be one of the following
option names:
allexport Same as -a.
errexit
emacs
Same as -e.
Puts you in an emacs style in-line
editor for command entry.
gmacs Puts you in a gmacs style in-line editor
for command entry.
ignoreeof The shell will not exit on end-of-file.
The command exit must be used.
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