Informix数据库中查询database和table占用空间的实例脚本：
#!/usr/bin/sh
if [ $# -ne 1 ]
then
echo " Usage: dbsize.sh DBNAME "
exit
fi
DBNAME=$1; export DBNAME
TMPFILE=/tmp/dbsize.tmp
RESULT=dbsize.out
export TMPFILE RESULT
dbaccess << !
database sysmaster;
unload to '$TMPFILE' delimiter "|"
select dbsname,
tabname,
count(*) num_of_extents,
sum( pe_size ) total_size
from systabnames, sysptnext
where partnum = pe_partnum and dbsname="$DBNAME"
group by 1, 2
order by 3 desc, 4 desc;
!
awk -F '|' ' BEGIN {
size=0;
}
{
size = size + $4
}
END {
printf (" The Database Size of %s is %d
pages. \n\n", ENVIRON["DBNAME"], size )
}
' $TMPFILE >; $RESULT
cat $TMPFILE >;>; $RESULT
view $RESULT
rm -f $TMPFILE