UNIX for Dummies Questions & Answers

I have few webservers logs like access.log. which would be growing everyday.
what i do everyday is, take the backup of access.log as access.log_(currentdate) and nullify the access.log.

So thought of writing a script... but stuck up in middle.

My requirement: to take the backup and nullify the log after it reaches 500 mb

1) i am able to find the logs which are more than 500mb using this command

find . -size +1000000 -exec ls -l {} \; > /tmp/logs

2) How do i pickup the files mentioned in /tmp/logs and take the backup with currentdate ? i need a command to backup (copy) with current date in same directory .

Thanks
logic0

Code:

dt=$( date +%Y%M%d )
cd /tmp
while read file
do
    cp ${file} "${file}_${dt}"
    : > ${file}
done < log

output of /tmp/log is like
./access.log
./logs/access.log

in command i see using

while read file

file is the /tmp/log ?

Replace dot by actual path

Code:

find <path_to_directory> -size +1000000 -exec ls -l {} \; > /tmp/logs

Code:

dt=$( date +%Y%M%d )
while read file
do
    cp ${file} "${file}_${dt}"
    : > ${file}
done < /tmp/logs

thanks anbu.. it worked kool !!! cheers

dt=$( date +%Y%M%d )
while read file
do
cp ${file} "${file}_${dt}"
: > ${file} --I did not undestsand this line, what does this line
done < /tmp/logs

Can u explain, what does that line.

Code:

: > ${file}

This line clears the text in ${file}