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   NNTP-Posting-Date: Thu, 01 Mar 2007 06:54:28 -0600   
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   Date: Thu, 1 Mar 2007 12:52:45 +0000   
   From: Chris    
   Newsgroups: alt.os.linux.ubuntu   
   Subject: Re: Looking for a Ubuntu equivalent of XP sending picture by email -   
   converson script...more   
   References:    
       
        
       
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   Xref: number1.nntp.dca.giganews.com alt.os.linux.ubuntu:11244   
      
   In article , Frank    
    writes   
   >On Thu, 01 Mar 2007 01:17:49 +0000, Frank wrote:   
   >   
   >> On Wed, 28 Feb 2007 09:43:36 +0000, Chris wrote:   
   >>   
   >   
   >   
   >   
   >>> Hmmm ... someone competent, like you, probably could do that.   
   >>> And I envy you.  I wish I could.   
   >>> That does sound the absolutely best solution.   
   >>> I wonder if enough people would find it useful for someone like you to   
   >>> be kind enough to publish such a script?   
   >>   
   >> Hey Chris,   
   >>   
   >> Here's a script -   
   >>   
   >> for f in *.[jJ][pP]*[gG]   
   >> do convert -scale 640x480 $f ${f%%.[jJ][pP]*[gG]}_sm.jpg   
   >> done   
   >>   
   >> just drop it into a file (e-mail_format_picture or   
   >> whatever) using any editor,   
   >>   
   >> chmod 755 that file so it can be executed   
   >> directly,   
   >>   
   >> place it in any /bin directory that's in your path (/bin   
   >> /usr/bin /usr/local/bin /opt/bin whatever)   
   >>   
   >> and whenever you execute it in a directory where your JPEG images for   
   >> mailing are located will scale all named jpg or JPG or jpeg or JPEG to no   
   >> greater than 640 height and 480 width, renaming them whatever they were to   
   >> start ending in _sm.jpg indicating small and ready to mail.   
   >>   
   >> You could add an additional piece of code to wrap this in a mailing   
   >> command but that's overkill.  Again, ImageMagick has to be on your system   
   >> since that's where the convert function comes from.   
   >>   
   >> Frank   
   >   
   >Sorry for the follow up, but as I was ready to move on to the next group I   
   >caught your comment about "I wish I could" and realized I missed an   
   >opportunity to explain in a simple context something that may advance your   
   >understanding a bit:   
   >   
   >The BASH script structure for...do...done is called a "for loop" which   
   >executes over and over until a test is done or fails.  In this simple   
   >script the for just looks at each file that matches the example in the   
   >directory where it's executed and loads them one at a time into the   
   >variable f.   
   >   
   >for f in *.[gobbledegook...  with that gobbledegook being first a wild   
   >card * that can be a picture file named anything, then the . that comes   
   >before the file extension, and finally the valid extension which can   
   >appear as upper or lower case j [jJ] etc. with another wild card in case   
   >there's a e or and E (jpeg is spelled out)   
   >   
   >do convert -scale 640x480 $f the command to limit the height and width to   
   >that geometry of each file named whatever is stored in f (read by $f)as   
   >input file   
   >   
   >all that jazz that follows as the output file is just the substitution   
   >operation where a name ($) is constructed from what's in the curly braces,   
   >taking the name portion of the file without any extension {f%%. along with   
   >its dot, and possessing but not using all that same lower/upper case stuff   
   >in square brackets and replacing } that stuff with the _sm.jpg   
   >   
   >rinse, repeat... until all files fitting that description in the directory   
   >have been converted, at which time the script is ...   
   >done   
   >   
   >Note, the original files aren't altered in any way by this script.   
   >They'll still be there named the same thing, but along with them will be   
   >all the _sm.jpg versions ready for attachment.   
   >   
   >Frank   
      
   Frank - Thanks very much indeed - for the trouble you took.   
   Much appreciated.   
   I am now going to go very quiet while I try it all out and cope with all    
   the nested problems that are sure to arise during the messy and yet    
   delightful process of learning!   
   --    
   Chris   
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