Hi,

I want to submit few jobs at fixed interval which is in hh:mm:ss format.

I created a script and able to submit the job by setting the crontabs. The number of crontabs will be equal to the number of jobs. But while submitting a job using crontab, the job is getting submitted in mm:hh:date:month:week format. Its not taking complete submit time format in hh:mm:ss format.

So is there any way that I can submit the jobs exactly using hh:mm:ss format.

Thanks

Mdesh

I do not know of a tool that literally takes hh:mm:ss as its argument, but there is 'sleep', which takes seconds or minutes or hours. You could write a simple wrapper script to convert your input from hh:mm:ss to just seconds:

That's pretty basic but it does the trick, ie, if I enter

./myscript.sh 00:01:14 'echo "hello world"'

then the shell waits for 74 seconds and then runs 'echo "hello world"' as expected.

If I run
(./myscript.sh 00:01:14 'echo "hello world"')
then it all happens in a subshell so I don't have to watch it sit there and wait. Not sure what your use case is.

Try the "at" command.

at 4:23:33 PM <<EOF
my-command
next-command
EOF

at 16:22:01 <<EOF
another-command
EOF

1 members found this post helpful.

The 'at' command runs a job once at the time you specify. You can even run the job on a later day. If the time has passed, it will run the job the next day.

Using cron, you can run jobs every ten minutes, once a day, once an hour, etc. Do 'man crontab' for info and 'man 5 crontab' for the file format.

Make sure the user 'root' is in the /etc/cron.allow file! No documents I found mentioned this part.

Sounded like the hh:mm:ss format was the most important thing, which crontab files do not use. The requirements are not very clear.