Help with replacing a file

mostwantedkisss · June 9, 2011, 5:32am

Hi

I need to replace A file with B when file A has no contents in linux.

Thanks

vidyadhar85 · June 9, 2011, 5:56am

What have you tried till now?

mostwantedkisss · June 9, 2011, 5:58am

I Just created copy.sh
copy.sh

cp /test/serverInfo/nodeManager/NM1/nodemanager.domainsbackup nodemanager.domains

and kept in crontab it runs every 10 mins, but my requirement is when nodemanager.domains get blank i need to replace with nodemanger.domainsbackup file.

thanks

click · June 9, 2011, 6:04am

Try this

vidyadhar85 · June 9, 2011, 6:06am

Use the simple if condition.

 
 
if [ ! -s filename ] ; then
cp file newfile
fi

mostwantedkisss · June 9, 2011, 9:45am

thanks it works.