How to copy 3 dir's contents to 1 dir by crontab?
 

Create a file test and add write down the 3 commands in that file.

cat /root/test1

#!/bin/bash
Commands_goes_here

Now set the cron as

*/1 * * * * /root/test1

You require a regex to do it in one cmd eg

Thanks I could do this by above given copy command but could you please tell me how to do this with scripting?

I mean how to copy dir /home/ftp1 /home/ftp2 /home/ftp3 to /ftpdata directory?

You just make that part of your script. Adjust the names as reqd. Scripts and manual cmds are the same; see
http://tldp.org/LDP/Bash-Beginners-G...tml/index.html
http://www.tldp.org/LDP/abs/html/
http://rute.2038bug.com/index.html.gz

You've got the command. Put it in a file, make the file executable. That's it....there's your script.

how to make it executable? with .sh extension?

set 777 as the permission.

Actually, only the owner needs x perms, so use

chmod u+x script.sh

and ensure you supply the complete path to the script when calling it from cron.

Why would you want to make a copy every minute?
As the contents of the 3 folders grow, the copy may take more than one minute to complete.

In other words, what are you really trying to accomplish with the copy?
A backup of all data on FTP (an incremental approach would be more efficient)?

Agree with timmeke here - running the script every minute wastes resources. If you want to backup your FTP data another option (if you have another machine available) is to do an rsync of your FTP data between the FTP server and "Backup" Server.

so is this metthod?

vi script.sh
(insert)
cp -rf /home/ftp1
cp -rf /home/ftp1
cp -rf /home/ftp1
:wq!

chmod u+x script.sh

crontab -u root -e
(insert)
*/1 * * * * /root/script.sh
:wq!

Close, but you'll want to add the "target" location to the cp commands.
Maybe you can try the commands manually first too (even with -v for verbose prints)?

Why would you need to run this copy-script as root user?
This can add serious risks to system security (e.g. the copied files may be left with root as owner).

Here you go:


1)

vi script.sh
(insert)

#!/bin/bash
cp -rf /home/ftp1/* /ftpdata
cp -rf /home/ftp1/* /ftpdata
cp -rf /home/ftp1/* /ftpdata
wq!


2)

chmod +x script.sh

3)

crontab -u root -e
(insert)
*/1 * * * * /root/script.sh
:wq!

With the chmod command, same as you were told in another thread, where you asked about permissions....