Re: how to match parenthesis in sed

["H.S." <hs.samix@gmail.com>]

H.S. wrote:
> H.S. wrote:
>> H.S. wrote:
>>> Hello,
>>>
>>> I am renaming files by removing parentheses from them. These are image
>>> files which were sorted in Windows (by placing them in the desired order
>>> and then by renaming them in batch mode in Windows explorer -- couldn't
>>> do this in Linux).
>>>
>>> Here is an example:
>>> 20030113_Lohri_ (107).jpg   -> is to be named as:
>>> 20030113_Lohri_ 107.jpg
>>>
>>> This I can accomplish by:
>>> $> nn=`echo "20030113_Lohri_ (107).jpg" | tr -d "()"`; echo $nn
>>>
>>> which spits out the modified name (in variable nn) and the output is:
>>> 20030113_Lohri_ 107.jpg
>>>
>>> However, I also want to remove that space preceding the opening
>>> parenthesis in the input filename. I am trying to do this via sed,
>>> something like (the following is one long line):
>>> $> nn=`echo "20030113_Lohri_ (107).jpg" | sed -e
>>> s/\(.*\)\.[Jj][Pp][Gg]/\1.jpg/`;
>>>
>>> However, this is not working. The above should give just the basename
>>> and then I add an extension of ".jpg" to it. I am guessing the
>>> parentheses in the input filename is causing the problem. How do I match
>>>  parenthesis in sed then?
>>>
>>> thanks,
>>> ->HS
>>>
>>>
>> There was a mistake in my earlier sed command. The following seems to work:
>> nn2=`echo "$fn" | sed -e 's%\(.*\)\
>> (\([0-9][0-9][0-9]\))\.[Jj][Pp][Gg]%\\1\2.jpg%'`;
>>
>> where $fn is the input filename and $nn2 will be the new filename.
>>
>> ->HS
>>
>>
>>
> 
> Furthermore, I just notice, there may or may not be a whitespace just
> before the first opening parenthesis in the input filename. To remove
> that if it exists and to leave it alone if it doesn't, the following
> seems to work:
> $> nn2=`echo "$fn" | sed -e
> 's%\(.*\)\s*(\([0-9]\{3,3\}\))\.[Jj][Pp][Gg]%\\1\2.jpg%'`;
> 
> where \s* matches zero or more whitespace.
> 
> Suggestions for improvement?
> 
> ->HS
> 
> 
> 
> 

Ah well, I might give the actual full script I am going to use:

Here is the script that changes the filename:
----------------- delparen.sh --------------
#!/bin/bash

if [ $# -lt 1 ]; then
echo "Missing filename. Usage is:";
echo "$0 <filename>";
exit -1;
fi

#get the filename
fn=$1;
#get new filename (following is one long line)
nn2=`echo "$fn" | sed -e
's%\(.*\)\s*(\([0-9]\{3,3\}\))\.[Jj][Pp][Gg]%\\1\2.jpg%'`;
#tell what is being done
echo "$fn --to--> $nn2";
#do the change
mv "$fn" "$nn2";


exit 0
----------------------------------------------

And here is the command that finds all my image files in directory E and
renames them using the above script:
$> find E/ -name "*.[Jj][Pp][Gg]" -exec ./delparen.sh "{}" \;


BTW, for some reason, the following does not work:
$> for f in `find E/ -name "*.[Jj][Pp][Gg]"`; do echo "$f"; done
The output of the above command has a new line before each parenthesis.

->HS