Advanced file renaming

[chebarbudo]

Hi everybody,
I need to rename files adding a timestamp to there name.
eg : rename myfile in myfile-2008-03-05

I need to do that on every file in a directory and its subdirectories.
So I wrote the following script :

find * -type f -exec mv "{}" "{}-2008-05-03" \;

It seems to work fine

Now, most of my directories store windows clients files. Which means those files have extensions and users see them with icons corresponding to this extension.
That's why I'd like to run my script adding the timestamp before the extension
eg : rename report.xls in report-2008-03-05.xls

Does anyone have a brilliant idea to do so ?
Thanks for your help.
Santiago

[vsemaska]

You'd have to write a script. Here's one I came up with that seems to work. Use at your own risk:

#!/bin/bash

typeset -i len
shopt -s extglob
curdte="`date "+%Y-%m-%d"`"
for oldfle in $(find * -type f)
    do
        dir="`dirname $oldfle`"
        fle="`basename $oldfle`"
        tmp="${fle%.*([[:alnum:]])}"
        len=${#tmp}
        lft="`echo "$fle^$len" | awk -F^ '{print substr($1,1,$2)}'`"
        len=len+1
        rt="`echo "$fle^$len" | awk -F^ '{print substr($1,$2)}'`"
        newfle="${dir}/${lft}-${curdte}${rt}"

        echo $oldfle
        echo $newfle
        mv $oldfle $newfle
    done

Note that if you run this script a 2nd time on a directory you'll get files like:
report-2008-03-05-2008-30-05.xls

Edit: Note that if there are spaces in the filenames this script will break.

[i92guboj]

This should work, not tested though.

#!/bin/bash

DATE="$(date "+%Y-%m-%d")"

find * -type f | while read file
do
  ext="${file##*.}"
  if [ ! "$file" == "$ext" ]
  then
    old="${file%.${ext}}"
    new="${old}-${DATE}.${ext}"
  else
    new="${file}-${DATE}"
  fi
  echo $new
done

If a file is on the form a.b, it ends as a-<date>.b.
If a file is on the form a.b.c, it ends as a.b-<date>.c
if a file has no extension, it ends being called a-<date>