mv command help

[noe]

hello all,
im doing a daily refresh of my database to a backup location. the database has subdirectories.so this is the command im using

mv /DATA/* /BACKUP
the error is:
subdir in DATA/subdir already exist
my question:
how can i create a script that will move and overwrite the BACKUP dir and SUBDIR with the refreshed data that i move daily?
thanks all in advance

[Steven Schweda]

"tar" pipeline?

[OldSchool]

well, is it safe to remove /BACKUP entirely before you do the move?

as in:
rm -rf /BACKUP
mv /DATA/* /BACKUP

or

if not, then find the directories immediately under /DATA, and using that information, remove the same from the /BACKUP directory, then do the move.

there are probably 1/2 a dozen other ways to do this as well...man tar has a couple of examples that might be enlightening

[Vishu · Accepted solution]

Hi Noe,

1. you can remove the Backup folder and create it again for backup.

2. As you do it on daily basis, so you can make directory under /BACKUP with the name "backup. and save DATA in it

3. you can use Tar to group all the files into a single file in /BACKUP folder.

[Victor Fridyev]

cd /DATA; tar cf - *|(cd /BACKUP; tar xf - )
cd /; rm -r /DATA

HTH

[noe]

thank you