No, I don't think anyone has said that it cannot be done using a tool/editor/script automatically. The decision is whether to use crontab command in a script or use another tool to edit the crontab directly followed by a restart of the cron daemon.
You still haven't described the "conditions" you mentioned in post #1 in this thread and you still haven't said how you would like to tell your script what you want it to do on a particular invocation. Without this information, I don't see how we can suggest a script that will do what you want.
Note that although you can't easily run vi with a script, you can easily run ed with a script. So your script might want to consider using:
Code:
EDITOR=ed crontab -u user -e <<-EOF
ed commands to add/remove # from appropriate lines
EOF
but the ed commands you put in that here-document will depend on what "conditions" have been detected, how you want to tell your script which country codes to enable and/or disable, etc.
If you're not comfortable writing ed commands (which you should be if you're used to running vi), you can also use:
Code:
crontab -u user -l > tempfile
use whatever commands you want to update tempfile
contab -u usertempfile
rm tempfile
to make the changes take effect immediately without stopping and restarting cron. (As hicksdb8 mentioned, if you directly edit the user's crontab file in place not using crontab -e and not using crontab file, the changes might not be noticed by cron until the next time you reboot or stop and restart cron.)
The above 2 rows one for Canada and other for USA. In this case I need to comment out USA and enable the crontab and also we have done all the migrations we need to uncomment the same . We have more than 250 rows in the file . How would this can be achieved using a script .
Last edited by ron5174; 04-26-2018 at 02:35 PM..
Reason: Corrected CODE tags
It can be solved in hundreds of ways based on the code snippets that I have already shown you. If you won't tell us how you plan to tell your script which country code(s) are to be enabled and/or which country codes are to be disabled, I am not going to attempt to enumerate hundreds of ways that I might imagine doing what you seem to want to do. Everything you should need to do this on your own was given to you (with two different approaches) in post #9 in this thread.
Until you clearly describe how you plan to interact with your script, I'm not willing to waste any more time trying to help you. Please answer the questions that have been asked in this thread and, then, we might be able to help you.
Note also that in your earlier posts country codes were shown in upper-case letters, but in post #10 the country codes turned out to be lower-case letters. You need to clearly specify how country codes and/or names will be given to your script and whether the country codes in your crontab file are upper-case, lower-case, or mixed-case.
These 2 Users Gave Thanks to Don Cragun For This Post:
Apologies for my wrong file entries provided earlier . Following is the sample file with all the countries
ca-> Canada
us-> usa
mx -> mexico
gb-> Great Britain
cn -> China
ge -> germany
We need to disable(comment out) country USA & enable all of the other countries when we are making application changes for USA. Once USA application chnages are completed, then we are planning to uncomment the cron entry for USA and once everything looks fine , we will go for the next country application changes . The only thing we need to see here , one country entries will be commented at a given time .
Let me if any further information required .
Thanks
Ron T
Last edited by MadeInGermany; 04-27-2018 at 04:31 AM..
Reason: Added code tags
Hi friends,
We have a Solaris machine running 10 update 3
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Solaris 10 11/06 s10s_u3wos_10 SPARC
Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
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Thanks,
Vinay (5 Replies)
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04-26-2018
