Re: echo/sed combination inserts extra characters

[Jesus Arocho <jesus_arocho@comcast.net>]

Thanks all for the responses to my question.  I will try the suggestions, 
specially the one about the date command.  I am still somewhat concerned 
about the introduction of extraneous characters.  I would like to know if 
indeed sed (at least the version I am using) is responsible for the extra 
characters.

On Saturday 18 November 2006 14:52, Gregory Seidman wrote:
> On Sat, Nov 18, 2006 at 12:39:26PM -0500, Jesus Arocho wrote:
> } I want to rename a series of photo files downloaded from a camera; the
> intent } is to append the date to the beginning of the file name.  The
> relevant lines } are:
> }
> } newdir=`date +%F | sed 's/-//g'` #newdir used to make the directory and
> to } rename the files.
> }
> } new=??`echo $i | sed -e 's/_//'` # strip the current file name of the
> underline } in the middle dsc_0001.jpg to dsc0001.jpg
> }
> } mv -f $i $newdir'_'$new  #rename the current file
> }
> } The resulting file name may contain an extraneous character (does not
> print) } located just after the _ ; as if the echo/sed combination had
> added a } character.  The processing continues because the loop is
> selecting all jpg or } nef files, but trying to do something with the file
> from the command line } results in file not found.  I can see the extra
> character in konqueror.
>
> Various people have suggested how to rename things already, but I'll point
> out that you aren't using date to its fullest to begin with:
>
> newdir=`date +%Y%m%d_`
>
> No need for sed in that one.
>
> --Greg