execute end of month..cronjob

[mw_4]

I wonder if I could run the script end of month..
Feb has 28th, and each of month has 30, 31 respectively..
who could give the answer..?

[Thierry Poels_1 · Accepted solution]

Hi,

this question has already been raised a couple of times, so RTFF!!


anyway:

define a job in your crontab to run on days 28-31:

put this little test in your script:

if test `TZ=MET-24 date +%d` = 01
then
last day of month --> continue
else
not last day of month --> exit
fi


good luck,
Thierry.

[Michael Tully]

Hi,

Sir A. Clay Stephenson's caljd.sh script fixes all of these date problems. Try this link.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x6e7a7d4cf554d611abdb0090277a778c,00.html

[James R. Ferguson]

Hi:

Here's an easy way using 'cal':

# cal|awk 'NF>0 {D=$NF} END{print D}'

...IF 'D' is the same as the current day, then it's the last day of the month. This works for leap years, too, as for instance:

# cal 02 2000|awk 'NF>0 {D=$NF} END{print D}'

As for the trick using 'TZ', my European friends living around the Prime Meridian are the "lucky" ones who can use +-24 hours to exactly compute yesterday or tommorrow including the correct time.

If you look at the man pages for environ (5) you will note that offset is the value that must be added to local time to arrive at UTC (GMT). Offset has the format hh[:mm[:ss]], where (hh) is any value from 0 through 23. The optional minutes (mm) and seconds (ss) fields are a value from 0 through 59. The hour field is required. If the offset is preceded by a -, the time zone is east of the Prime Meridian. A + preceding the offset indicates that the time
one is west of the Prime Meridian.

Notice, for example, though, that at 1100 hours on July 11 in the Eastern US, you cannot produce a date *and time* exactly 24-hours ago. To affect this, the computation would need to offset 28 hours (24+4), an invalid offset.

Regards!

...JRF...

[Marc Veeneman]

With GNU date you can test
`date -d tomorrow +%d` == 01
for end of month

[mw_4]

I think most of you are best!!
thanks your answer again!
best regards.