Shell Programming and Scripting

Hi All,

I am in a tricky situation where I have to move my files to a different mount point and create a link in place of the file which will point to the moved location.

to explain you in details:-

say I have two mount points

/dir/mount1/
/dir/mount2/

I have my application files in /dir/mount1/application/

in /dir/mount1/application/ i have directories like

/dir/mount1/application/month
/dir/mount1/application/month/day
/dir/mount1/application/month/day/hour
/dir/mount1/application/month/day/hour/min1/a.txt
/dir/mount1/application/month/day/hour/min1/b.txt
/dir/mount1/application/month/day/hour/min1/c.txt

and

/dir/mount1/application/month/day/hour/min2/d.txt
/dir/mount1/application/month/day/hour/min2/e.txt

like wise....these files will be created in day-hour-min format directories...
now I need to move these .txt files to
/dir/mount2/application/ directory which will have exact directory structure which mount point 1 has.

and in place of original files in mount1 I will create softlinks which will be linked to the shifted files respectively....


any idea will be appreciated....

---------- Post updated 10-24-09 at 12:39 AM ---------- Previous update was 10-23-09 at 11:18 PM ----------

any luck with any one?

Hi.

As a starting point:

Code:

cd /dir/mount1
tar cf - application | (cd ../mount2; tar xf -)
find application -type f | while read FILE; do
   rm "$FILE"
   ln -s ../mount2/"$FILE" "$FILE"
done

Thanks Scott for suggestion...I had to discard the tar methos as if I do tar for the first time I will get all the files in my back up location but.....as on my files gets loaded in primary directory I have to move those files also...then how do I move the differential tar to back up location and create link?

Try this...

Code:

mount1="/dir/mount1"
mount2="/dir/mount2"

cd $mount1

f_list=`find application -type f`

tar cf - $f_list | (cd $mount2; tar xf -)

for i in $f_list ; do
  rm $i
  ln -s $mount2/$i $i
done

thanks for suggestion but req is diff here...I have to move the files daily through a cron script.....your suggestion will work if I do once....

but If i do daily then I have to copy the files(and not the links which are created already)...so If I do tar and move the files in my new location I will get error as directory already exist....

I am working on a shell script whcih will create the exact directory structire in the new location, move the files and create a link to it....


by the time any new suggestions are appreciated....

The script will only move files that are not links already. The tar pipe is a convenient way to move the files without having to create logic to make paths and directories that may not exits. What the script does:

For the first run, every file will be moved and linked. For any subsequent runs, only files that are not sym links (i.e. new additions) will be moved.