HP 3000 Manuals HP 3000 Manuals
Creating and Naming Directories
This section describes the following topics:
* Conventions for naming directories
* Security when creating directories
* Creating directories in your current working directory
* Creating directories in another group
Conventions for naming directories
Directory names follow the same rules as file names. Directory names can
include the special characters - (hyphen), _ (underscore), and . (dot);
they can be uppercase, lowercase, or a combination of the two. The
maximum name length for a directory created in the root directory, an MPE
group, or an account is 16 characters. Hierarchical directories can
contain names that are up to 255 characters long. They cannot begin with
a - (hyphen).
The file names dot (.) and dot-dot (..) have special meaning. Dot (.)
is the identity function, or shorthand for the directory itself, wherever
that directory is. For example:
/A/B/./C
The . entry does not refer to the CWD, but to the B directory, since
that is the location you are at in the path.
A leading dot meaning the CWD is a result of the fact that a non-absolute
name is a relative name (relative names are always relative to the CWD),
therefore, the leading dot names the CWD.
The name dot-dot refers to thedirectory that is the next level up, also
called the parent directory.
Refer to Tables 2-1, 2-2, and 2-3 in Chapter 2 for additional naming
restrictions.
Security when creating directories
You can create directories in any directory, group, or account to which
you have CD access.
You must have the following privileges to create directories:
* Create directory entries (CD) access for the parent directory
* Save files (SF) capability
* Traverse directory entries (TD) access to the parent directory
Access to directories is controlled by ACDs. Refer to Chapter 9 for
information on using ACDs to change directory access.
Creating directories in your current working directory
To create a directory in your current working directory:
* Use the NEWDIR command.
For example:
:NEWDIR CPROGS
This command creates a directory called CPROGS in the directory in which
you are currently working.
If you typed the name in lowercase and did not preface it with a ./ or /,
MPE/iX converts it to uppercase:
:NEWDIR cprogs
MPE creates a directory called CPROGS in your current working directory.
Note that because of the upshifting that occurs, executing this command
has the same result as executing the command with CPROGS in uppercase.
If you want to use HFS syntax for naming a directory, you need to preface
the name with ./ or /. For example, to create a directory with a
lowercase name:
:NEWDIR ./cprogs
This example creates the directory cprogs in your current working
directory.
Creating directories in another group
To create a directory in a group other than your logon group, use the
full pathname of the directory in the NEWDIR command line.
For example, if you have TD access to /PRG/BOB and CD access to BOB on
your system, you can type the following command:
:NEWDIR /PRG/BOB/cprogs
This command creates a new directory called cprogs in the group called
BOB in the PRG account.
If you try to create a directory in a directory that you don't have CD
access to, you receive a message telling you that you need CD permission
to create new directories.