STORE and TurboSTORE/iX Products Manual (B5151-90003)

205
error messages Messages describing errors occurring during either an interactive
session or a batch job. The messages are reported to the standard list device, which is
usually a terminal (for a session) or a line printer (for a job).
file An object that can be written to, read from, or both. A file has certain attributes
including access permissions and file type. A group of related records that represents
ASCII text (text files) or binary data (such as executable code). Every file must have a
filename so that the user can access the file's contents.
file equation A method of equating a filename to a device or another file. The MPE/iX
FILE command is used to establish the relationship of the file to the device. Generally used
to direct the input to or output from a program, job, or session to a particular device by
referencing the device class, such as TAPE or LP.
filename A name of a file that can be in MPE syntax (FILE.GRP.ACCT) or HFS syntax
(/ACCT/GRP/FILE1). Each syntax has different restrictions on filename length and the
characters that can compose the name. See also MPE syntax and HFS syntax.
file owner The person who has complete access to a file unless the user is restricted by a
$OWNER ACD entry. The $OWNER ACD entry can restrict the file access of the file owner. The
file owner is similar to the file creator. The command LISTFILE filename -3 displays the
fully qualified user ID (user.account) of the file owner.
group For POSIX compatibility, refers to a group of related users. This is distinct from
MPE groups, which are special types of directories existing directly below accounts.
group ID database A system database that contains the group name, group ID, and user
names for all groups.
group ID (GID) A number that determines group access privileges. (On MPE/iX, it is
actually the string @.account).
HFS syntax Expanded MPE/iX syntax that is case sensitive and allows users to address
multiple levels in the hierarchical file system. A name beginning with "./" or "/"
automatically signifies HFS syntax to MPE/iX.
Some additional rules are as follows:
• Names of directories directly under root or under an account may have up to 16
characters.
• Names of directories or files not directly under the root or a group can be up to 255
characters.
• Names of directories and files can contain the following special characters: hyphen (-),
dot (.), or slash (/)
hierarchical file system (HFS) A file system that is tree structured and can contain
files at many different levels. This file organization is obtained through the use of
directories, which can contain files and other directories.