Crontabs

minute  hour  dayOfMonth  month  dayOfWeek  command

where:
minute values range from 0 to 59,
hour values range from 0 to 23,
dayOfMonth values range from 1 to 31,
month values range from 1 to 12,
dayOfWeek values range from 0 to 6, with 0 meaning Sunday

copy disk

 dd if=ad320/ad320_btld.img of=/dev/fd0 bs=8k
dd: cannot open ad320/ad320_btld.img: No such file or directory (error 2)
sdm(admo):/u11/ad320d> dd if=/u11/ad320/ad320_btld.img of=/dev/fd0 bs=8k
dd: cannot open /u11/ad320/ad320_btld.img: No such file or directory (error 2)
sdm(admo):/u11/ad320d> dd if=/u11/ad320d/ad320_btld.img of=/dev/fd0 bs=8k
180+0 records in
180+0 records out
sdm(admo):/u11/ad320d> sum -r /dev/fd0
57342  2880 /dev/fd0

Select Grouping

select sth_num, count(*) from stdacdh  where sth_term='1101'
group by sth_num /