Hi,
I would like to find out how can i calculate a date which is 3 months ago. I intend to run a cron job on the 1st of every month, and calculate the month 4 months earlier from the date. For example, if today's date is 1st May 2007, i would like to return 012007( January 2007).
i can get... (1 Reply)
I know I can't schedule this in cron and would have to write a wrapper around my script and schedule it in cron ....but not sure how do to this?
How do I exclude Monday if the 2nd day of the month falls on a Monday?
Thanks.
I tried this:
0 0 2 * 0,2-6 command
And I know this doesnt... (2 Replies)
Hello Friends,
I have a cron tab like this:
10,40 1-23 * * * /script
i want to skip only one execution at 00:10, so basically i want it to execute every hour at 10th and 40th minute, except 00:10.
Could anyone help me doing this
Thanks folks
:b: (4 Replies)
Hello Experts,
I have a script which i want to run the on last day of every month.
let say I have backup.sh script which i want to run it every month last day.
Can anyone please help :confused:
thanks (4 Replies)
Hello Guys,
I have a questions regarding running a shell script every second working day each month.
I have no clue how solve this problem :wall:.
Important is that it has to be the second working (Mo-Fr).
Example: If 1st and 2nd Days of month are Sat and Sun the script must run on 4th day... (5 Replies)
Hi all,
I currently have a UNIX file maintenance script that runs daily as a cron job.
Now I want to change the script and create functions/sub inside it that runs on a weekly or monthly basis.
To run all the scripts' daily maintenance, I want to schedule it in cron as simply maint.sh... (1 Reply)
The following bash command line works for the last day of the month. Test by replacing the 1 with tomorrows day of month number
&& echo "Day before tomorrow"Can it be used within crontab? As
* * 28-31 * * && echo "Today ls last day of month" >>/tmp/crontabtestI tried to test crontab with... (1 Reply)
I am looking for a unix script which could run a job on 2, 4 and 7 working day of the month.
if the days are falling on the saturday/sunday. it should run on the next day.
Thank you.. (9 Replies)
I have query apply crontab entry that the script executes as below
day hours (before 8:00 PM and after 7:00 AM) execute every 5 min
in Night hours (after 8:00 PM to 7:00 AM) executes every 15 min
How can we set such entry in crontab ? (4 Replies)
Discussion started by: kaushik02018
4 Replies
LEARN ABOUT ULTRIX
crontab
crontab(5) File Formats Manual crontab(5)Name
crontab - clock daemon table file
Syntax
/usr/lib/crontab
Description
The command executes at specified dates and times according to the instructions in the file. The file consists of lines with six fields
each. The format for a line is as follows:
minute hour day month weekday command
The following list defines each field in the line:
minute (0-59) The exact minute that the command sequence executes.
hour (0-23) The hour of the day that the command sequence executes.
day (1-31) The day of the month that the command sequence executes.
month (1-12) The month of the year that the command sequence executes.
weekday (1-7) The day of the week that the command sequence executes. Monday = 1, Tuesday = 2, and so forth.
command The complete command sequence variable that is to be executed. Note that the command string must conform to Bourne shell
syntax.
The first five integer fields may be specified as follows:
o A single number in the specified range
o Two numbers separated by a minus, meaning a range inclusive
o A list of numbers separated by commas, meaning any of the numbers
o An asterisk meaning all legal values
The sixth field is a string that is executed by the shell at the specified times. A percent sign (%) in this field is translated to a new-
line character. Only the first line of the command field, up to a percent sign (%) or end of line, is executed by the shell. The other
lines are made available to the command as standard input.
Examples
The following example is part of a file:
# periodic things
0,15,30,45 * * * * (echo '^M' `date`; echo '') >/dev/console
0,15,30,45 * * * * /usr/lib/atrun
# daily stuff
5 4 * * * sh /usr/adm/newsyslog
15 4 * * * ( cd /usr/preserve; find . -mtime +7 -a -exec rm -f {} ; )
20 4 * * * find /usr/msgs -mtime +21 -a ! -perm 444 -a ! -name bounds
-a -exec rm -f {} ;
# NOTE: The above line is wrapped.
# local cleanups
30 4 * * * find /usr/spool/mqueue -type f -mtime +5 -name df-exec rm {} ;
35 4 * * * find /usr/spool/mqueue -type f -mtime +5 -name tf-exec rm {} ;
40 4 * * * find /usr/spool/rwho -type f -mtime +21 -exec rm {} ;
#
# redirecting error output
0 17 * * 1,3,5 /bin/tar -cv /usr/sysads/smith > /dev/console 2>&1
#
FilesSee Alsosh(1), cron(8)
Guide to System Environment Setup
crontab(5)