Generated from C.65.00 /SYSADMIN/PUB/MYCICAT last modified on Sun Aug 29 15:08:37 2004
Changes the process's current working directory (CWD).
Syntax
CHDIR [ [DIR=]dir_name] [;SHOW | NOSHOW]
dir_name The name of the new current directory (optional).
The dir_name is assumed to be an MPE name.
HFS-named directories may be changed to if
dir_name starts with a dot (.) or a slash (/).
The dir_name may not end in a slash and wild
carding is not allowed. If dir_name is omitted,
your logon directory is used. Your logon
directory is your logon group, in the form:
/LOGON_ACCOUNT/LOGON_GROUP.
The CHDIR command changes the process' current working directory
to dir_name or to the logon group, if you omit dir_name. You can
change the CWD to any HFS directory if you precede dir_name with
a dot (.) or a slash (/) or to an MPE account or group to
which you have the appropriate permission.
Issuing the CHDIR command does not give users access to files in
a directory (or group and account) that they would not otherwise
have. That is, it has no affect on file access permissions.
The CWD is a process-local attribute, which means that CHDIR
changes the CI's CWD for the life of that CI process or until
another CHDIR command is issued. When CHDIR is executed
programmatically from a child process of the CI (e.g., HPEDIT),
only that process' CWD is changed; the CWD of the parent process
(in this example, the CI) remains the same.
CHDIR does not post any accounting information: Connect and CPU
time are still accounted to the user's logon account and group.
HPCWD is a read-only, CI string variable that contains the name
of the current working directory in HFS syntax. At logon, HPCWD
contains /account_name/logon_group_name. The CHGROUP command
causes the HPCWD variable to be set to /account/group_changed_to.
The table below summarizes the differences and similarities
between the CHDIR and CHGROUP commands.
--------------------------------------------------------------
|Affects | CHGROUP | CHDIR |
--------------------------------------------------------------
|Accumulation of CPU and Connect time | yes | no |
--------------------------------------------------------------
|Set of accessible files | yes | no |
---------------------------------------------------------------
|CWD of process | yes | yes |
---------------------------------------------------------------
|HPCWD variable | yes | yes |
---------------------------------------------------------------
|Disk space accumulation limits | yes | no |
---------------------------------------------------------------
The CHDIR command may be invoked from a job, session, program,
or in break mode. It is not breakable. You must have Traverse
Directory entries (TD) permission to each directory component in
dir_name (refer to the ALTSEC command for more information on
directory permissions). The CWD is not changed if the CHDIR
command fails.
The following example shows the command entry to change to
the directory "dir1" in the "MYGRP" group in the "MYACCT"
account.
CHDIR /MYACCT/MYGRP/dir1
The following example shows the command entry to change to
the MPE group level (AGROUP) in the MYACCT account.
CHDIR /MYACCT/AGROUP
The following example shows the command entry to change to a
directory named spook_dir. In this example, spook_dir
is a relative pathname; that is, relative to the current
working directory (CWD).
CHDIR spook_dir
You must use HFS syntax to change groups with the CHDIR command.
For example, if the CWD is PUB.SYS and you want to change to the
group ARPA, you would enter:
CHDIR /SYS/ARPA
or
CHDIR ../ARPA
The following example shows the command entry to change to a
directory named spook, in the group jones, in the account
users, by specifying the full pathname.
CHDIR /MYACCT/JONES/spook
In the following example, a change is made to a directory
named final by specifying the relative pathname. The variable
HPCWD displays the current working directory after the change
is made.
CHDIR ./es/final
SHOWVAR HPCWD
HPCWD = /MYACCT/JONES/spook/es/final
Commands: CHGROUP and the HPCWD variable Back to Main Index