How to check whether a file or directory is good to remane

franciscodiaztrepat · 04-14-2008, 02:29 PM

Hi, newbie here.

I want to rename a directory myproject to myprojecttmp through an mv command. This usually will rename without move or copy being done.
But if I have a file or folder opened inside myproject folder then a cp is performed instead and my bash script takes a long time pluss i have two dirs.

Could some one help me out?

I need a way to test that a rename cannot be performed to be able to output a message saying "Hey you, please close all files before running this script!!!!"

and not mess up things.

Am I in the right track here should I test it other way?

thanks in advance,
f(t)

bigrigdriver · 04-14-2008, 02:42 PM

From the mv man page:

Code:

-t, --target-directory=DIRECTORY
              move all SOURCE arguments into DIRECTORY

Have you tried mv with the '-t myprojecttmp' option?

colucix · 04-14-2008, 03:00 PM

I don't quite understand the problem here. Anyway, to check if directory or a file is in use, you can try the command lsof:

Code:

$ cd $HOME/test
$ lsof $HOME/test
COMMAND   PID    USER   FD   TYPE DEVICE SIZE    NODE NAME
bash    12356 colucix  cwd    DIR    8,8 4096 2342973 /home/colucix/test
lsof    20986 colucix  cwd    DIR    8,8 4096 2342973 /home/colucix/test
lsof    20987 colucix  cwd    DIR    8,8 4096 2342973 /home/colucix/test
$ cd
$ lsof $HOME/test
$

See man lsof for details and for some useful option to parse the lsof output inside your scripts.

franciscodiaztrepat · 04-14-2008, 03:03 PM

Quote:

Originally Posted by bigrigdriver

From the mv man page:

Code:

-t, --target-directory=DIRECTORY
              move all SOURCE arguments into DIRECTORY

Have you tried mv with the '-t myprojecttmp' option?

Sorry http://www.gnu.org/software/coreutil...directory.html

I cannot see how could this help. AFAIK.

f(t)

franciscodiaztrepat · 04-14-2008, 03:09 PM

Quote:

Originally Posted by colucix

I don't quite understand the problem here. Anyway, to check if directory or a file is in use, you can try the command lsof:

Code:

$ cd $HOME/test
$ lsof $HOME/test
COMMAND   PID    USER   FD   TYPE DEVICE SIZE    NODE NAME
bash    12356 colucix  cwd    DIR    8,8 4096 2342973 /home/colucix/test
lsof    20986 colucix  cwd    DIR    8,8 4096 2342973 /home/colucix/test
lsof    20987 colucix  cwd    DIR    8,8 4096 2342973 /home/colucix/test
$ cd
$ lsof $HOME/test
$

See man lsof for details and for some useful option to parse the lsof output inside your scripts.

Ok this seams more likely. I'll see if this could help be out with some pipeping.

The problem is that it does not rename a directory if an inside file/folder is open. It also does not throw an error. Instead it performs a copy (cp), by that taking too much time.

f(t)