migrating/backup script

Hello all. I recently came into the position of maintaining several SQL
database servers. Having no prior experience other then FileMaker, I'm a
little daunted. :) So one of things I'm doing is moving them to new
servers. In the process I thought it would be a good idea to come up
with a backup script I can turn into a cron job. I took a look at the
scetion on backup/restore in Practical PostGreSQL, and the pg_dump
manpage. I wanted to split out dumping schema/data/oid/blob into
separate dump files. Seems the pg_dump I have doesn't support -C or -b,
or -F. So here's what I have for what's left. In order to automate, I
have a text file, readable only by root, with the username/pass to
connect to the database as. That's what the cat file | pg_dump is for.
I'm very open to improvement on that part of things. Using this, should
I restore data then oids? Will I have any issues going from 7.0.3 to
7.2.1? I'm moving to a RH 7.3 server running the RH 7.2.1 packages. Any
fatal flaws/gotchas I should be aware of? Thanks in advance.

DBS="db1 db2 db3"

BACKUP="/my/backup/folder"
DATE=`date +%Y-%m-%d--%H-%M-%S`

check_err() {
   if [ $1 -ne 0 ]; then
     echo "There was an error creating $2"
   fi
}

cd $BACKUP
mkdir $DATE && cd $DATE

for DB in $DBS; do
   echo -n "$DB : ... "
   mkdir $DB && cd $DB

   # schema
   cat $BACKUP/pass | pg_dump -u -s -f ./$DB.schema $DB > $DB.log 2>&1
   check_err $? $DB.schema
   # data
   cat $BACKUP/pass | pg_dump -u -a -D -f ./$DB.data $DB > $DB.log 2>&1
   check_err $? $DB.data
   # oids
   cat $BACKUP/pass | pg_dump -u -o -f ./$DB.oids $DB > $DB.log 2>&1
   check_err $? $DB.oids

   echo "done."
   cd ..
done

--
Justin Georgeson
UnBound Technologies, Inc.
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