does anyone know how to get the crontab back?

i have erased it by mistake!

thanx in advance

Slow down... You are most likely not in trouble here...

Maybe you didn't "erase", you probably just pointed it at a new config file.

If you typed "crontab somefile" you only replaced it with another file.

Depending on your system OS, go /var/spool/cron/crontabs directory.

Do an ls and look for a file called "root"
If there, do a cat to see if that is your original crontab.

Then do a "crontab root" to relink it to the crontab.

If you typed crontab somefile. That file will replace your crontab file.

To prevent you from doing this in the future, I would suggest the following.

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In a directory where you keep config files. I make a dir called /root/mydir.

cd /root/mydir
crontab -l > mytempcron # this will save a copy of your crontab file for root or whomever you are logged in as at the moment.

Then if you want to change the crontab.

vi mytempcron # edit the file to your specifications.

Then to move into place.

crontab mytempcron # use the crontab command to assign a file for the crontab to read and execute.

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If you actually deleted root's cron config file. Then you may be in trouble. If you have a backup utility, that may be your saviour.

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My brain is your brain