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There are several tasks that should be performed prior to installing PMDF for the first time. These tasks are outlined in the sections below.
1.2.1 Create PMDF and PMDFUSER Accounts
You must add two user accounts for PMDF to the system password file and
specify (but not create) the accounts' home directories. Specify
pmdf as the first username with /pmdf/queue
as its home directory, and specify pmdfuser as the second
username, also with /pmdf/queue as its home directory. Be
sure that the user ids and group ids for the pmdf and
pmdfuser accounts are distinct from each other and from
those of any other accounts on your system.
To add these accounts, you may use the groupadd and
useradd utilities, making sure to specify but not create
the home directories, as described in Section 1.2.1.1 below, or you may use
the /usr/sbin/vipw utility to manually edit the system
password file, /etc/passwd, and add the accounts, and then
edit the system shadow file, /etc/shadow, similarly, as
described in Section 1.2.1.2 below. Or you may use any other utility
provided by your Linux distribution to create accounts.
Make sure to specify that the home directory of the pmdf
and pmdfuser accounts (/pmdf/queue) should
not be created.
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1.2.1.1 Using GROUPADD and USERADD to Add the Accounts
This section describes how to use the groupadd and
useradd utilities to add the required pmdf
and pmdfuser accounts.
Issue the commands
# groupadd pmdf # useradd -c "PMDF" -d /pmdf/queue -M -s /bin/sh -f 0 -e "" -g pmdf pmdf # groupadd pmdfuser # useradd -c "PMDF user" -d /pmdf/queue -M -s /bin/sh -f 0 -e "" -g pmdfuser pmdfuser |
passwd command to set real passwords for the
two new accounts.
1.2.1.2 Editing the /etc/passwd and /etc/shadow Files to Add the Accounts
This section describes how to use the /usr/sbin/vipw
utility to manually edit the system password file, and add the required
pmdf and pmdfuser accounts. Specify
/pmdf/queue as the home directory for both accounts. Be
sure that the user ids and group ids of the pmdf and
pmdfuser accounts are distinct from each other and from
those of any other accounts on your system.
Invoke vipw to manually edit the system password file.
Upon saving the system password file, you will be prompted to also
update the system shadow file, /etc/shadow, with entries
for these accounts. (Note that in order to make system administration
more manageable, it is usually recommended that shadow entries be added
in exactly the same order as password entries.) Create entries for the
pmdf and pmdfuser accounts in the system
shadow file having arbitrary random strings in place of real passwords,
save the system shadow file, and then use the passwd
command to set real passwords for the two new accounts.
For example, if your system has no accounts with user id or group id
30 or 31, then an example of appropriate
entries to add to /etc/passwd is:
pmdf:x:30:30:PMDF:/pmdf/queue:/bin/sh pmdfuser:x:31:31:PMDF user:/pmdf/queue:/bin/sh |
An example of appropriate initial entries for the system shadow file is:
pmdf:xxxxxxxxxxxxx::::::: pmdfuser:yyyyyyyyyyyyy::::::: |
passwd command to set real passwords for the
two new accounts.
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