readonly(1)

NAME

     readonly - shell built-in function to protect the  value  of
     the given variable from reassignment

SYNOPSIS

  sh
     readonly [name...]

  ksh
     **readonly [ name [ = value]...]

DESCRIPTION

  sh
     The given names are marked readonly and the  values  of  the
     these  names may not be changed by subsequent assignment. If
     no arguments are given, a list  of  all  readonly  names  is
     printed.

  ksh
     The given names are marked readonly and these  names  cannot
     be changed by subsequent assignment.

     On this man page, ksh(1) commands that are preceded  by  one
     or two ** (asterisks) are treated specially in the following
     ways:

     1. Variable assignment lists preceding the command remain in
        effect when the command completes.

     2. I/O redirections are  processed  after  variable  assign-
        ments.

     3. Errors cause a script that contains them to abort.

     4. Words, following a command preceded by ** that are in the
        format  of  a  variable assignment, are expanded with the
        same rules as a  variable  assignment.  This  means  that
        tilde substitution is performed after the = sign and word
        splitting and file name generation are not performed.

ATTRIBUTES

     See attributes(5) for descriptions of the  following  attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | SUNWcsu                     |
    |_____________________________|_____________________________|

SEE ALSO

     ksh(1), sh(1), typeset(1), attributes(5)