crontab

[amit singh_3]

hey ,
does any one knows how to execute shell script
interactively by using crontab.

[Mitra Bhanu Rath]

hi,
i think just edit ur crontab file and give the path to ur executable file and ask it to give the std output to /dev/console
like "sh /tmp/file >/dev/console".Hope,this might solves ur problem.

Bhanu

[Jeroen Peereboom]

Amit,

cron jobs are non-interactive.
A user may change his cron jobs by usinge 'crontab -e' (edit user's crontab file).

You may also want to consider the 'at' command.

I'm not sure what you mean by interactively.

JP

[Sanjay Kumar Suri]

I am wondering as which kind of script/jobs be fired using crontab and simultaneously be interactive.

sks

[Sunil Sharma_1]

Hi,

main function of cron is to run jobs silently in background.

If you want to do it interactively it's batter to run script manually.


Sunil

[Mark Grant]

Guys, I don't think this is entirely true.

You could start a script in an xterm scheduled by cron I iamgine.

a cron job that did something like

00 10 * * * xterm -e "/usr/local/bin/myscript" -display :0

Would start an interactive script at 10.00 in the morning on the console if it was a X console.

However, I can only see this working for X applications.

[Jeroen Peereboom]

Mark,

that's tricky. Such a cronjob will only end if the xterm is closed?

JP.

[R. Allan Hicks]

If you mean by "interactive", providing a script with stored operator input, I think I have a solution for you.


Consider the following script (I call foo.ksh):

#!/bin/ksh
#
read mystuff
echo $mystuff

You run it and get

foo.ksh
Hello World
Hello World

If you create yet another script (I call foo2.ksh):

#!/bin/ksh
#
/mydir/foo.ksh<Hello World
EOF

The second script is submitted as a cronjob.
It calls the first script with the operator responses directed into the first script. So, you can take a standard script or program put the responses after the line that runs the script or program and submit it as a job.

0 0 * * * * /mydir/foo2.ksh

foo2.ksh runs foo.ksh every night at midnight

[amit singh_3]

hey mark,

I have tried it but still it is not
working.ya but it is manually working,
I mean.....
#xterm -e test.sh
after firing this manually it is working but
in crontab it is not .
so pls help me.

[Peter Nikitka]

Hi,

you have to set all the Env-vars usually set
in .profile,... in your cronjob BEFORE using them or supply options,.. instead.
Put localhost / your hostname in /etc/X0.hosts
to get permanent access to your display and try

xterm -display localhost:0 ...

mfG Peter