BS2000 file names

Format for BS2000 (DMS)	Meaning
:cat:$user.filename	cat Optional specification of catalog ID; Available characters restricted to A...Z and 0...9; max. 4 characters; must be enclosed in colons; Preset is the catalog ID assigned to the login name in the entry in the user catalog.
	user Optional specification of login name; Available characters A...Z, 0...9, $, #, @; max. 8 characters; must not start with a digit; $ and the dot must be entered; Preset is the catalog login name under which the file is accessed.
	filename File name can be split up into several subnames: name1[.name2[...]] namei contains no blanks and must start or end with a hyphen; Character set is A...Z, 0...9, $, #, @. File name can be up to 41 characters long, must not start with $ and must contain at least one character in the range A...Z.
:cat:$user.group (gen-no)	cat see above user see above group Name of a file generation group For character set see filename, brackets must be specified max. length 41 characters. (gen-no) (*abs) absolute generation number (1..9999); * and brackets must be specified. (+/-rel) relative generation number (0..99); Signs and brackets must be specified.
:cat:$user. lib/typ/element	cat see above user. see above lib Library name; the rules for BS2000 DMS file names apply.
	typ Element type; Alphanumeric name, 1 - 8 characters in length.
	element Element name; The rules for LMS element names apply; element can be up to 64 characters in length, must not begin with $, and must include at least one character from A...Z.

If files are transferred using POSIX commands, local DMS names must be specified including the catid. Names specified without the catid are interpreted as POSIX files. The prefix "::" can be used for the default catid.

POSIX file names

In the local and /or remote BS2000 operands for the POSIX file names, the POSIX file name must be specified as a C string (graphic string) (i.e. enclosed in quotation marks). This is necessary in order to distinguish between uppercase and lowercase in POSIX file names.

Format for BS2000 (POSIX)	Meaning
posix-filename	Character string up to 255 characters long. Comprises either one or two dots, or alphanumeric characters and special characters; special characters must be canceled with \. The character / is not permitted. Must be enclosed in quotation marks if alternative data types are permissible, separators are used or the first character is ? or !. posix-filename must be prefixed with a posix-pathname.
posix-pathname	Input format: [./]part1/.../partn where partn is a posix-filename; up to 1023 characters; must be enclosed in quotation marks if alternative data types are permissible, separators are used or the first character is ? or !. posix-pathname must begin with / or ./, or consist of at least / or ./.