[CLUE-Tech] Just a little help?

[Ed Hill]

On Wed, 2004-01-14 at 22:35, David Willson wrote:
> I got the hard part done.  Or so it seems.  I have written a script that will
> replace a 'source' directory's name in all the found directory-names with a
> target directory's name.  Now, I want to test each line of output for
> directory-ness, and record the source directory that doesn't have a matching target.
> 
> Help?  Pretty-please?

Hi David,

Marcus Hall and I already sent you two perfectly good options that will
do exactly what you want.  They are:

  Option 1: (from Marcus):  Use the bash "read" built-in (see his 
    previous email) to do something such as:

    find /path1 -type d | sed -e 's|/path1|/path2|g' | while read i ; do
      test ! -d $i  &&  echo "cannot find $i"
    done

  Option 2: (adapted from my earlier email) similar to Marcus' idea:

    find /path1 -type d | sed -e 's|/path1|/path2|g' | \
      perl -e 'while(<>){if(! -d $_){print "Error: cannot find: $_";}};'

Really, your problem only warrants a simple little two- or three-line
script.  You're putting way too much time/effort/typing into it...

Ed


> Script is quoted below.
> 
> ----- Forwarded message from dlwillson at mailman.thegeek.nu -----
> 
> #!/bin/bash
> 
> #  ~this~ takes two directories as arguments
> #  and verifies that all folders in the first exist as folders in the second.
> #  Author: David L. Willson, (303) 299-8042, DLWillson at TheGeek.NU
> #  Created: 2004 JAN
> 
> srce="/home/dlwillson/"
> dest="/backup/dlwillson/"
> 
> # Validate directories
> if [ ! -d $srce ]
>   then echo $srce "is not a directory" ; exit 1
> fi
> if [ ! -d $dest ]
>   then echo $dest "is not a directory" ; exit 1
> fi
> 
> #  What I need to do next (escape the slashes):
> #  $ echo "/home/dlwillson/.kde" | sed -e s/[/]/'\\\/'/g
> #  \/home\/dlwillson\/.kde
> 
> sedCmnd="s/[/]/\\\\\\//g"
> eSrce=`echo $srce | sed -e $sedCmnd`
> eDest=`echo $dest | sed -e $sedCmnd`
> 
> # Echo variables back
> echo '$srce='$srce
> echo '$dest='$dest
> echo '$eSrce='$eSrce
> echo '$eDest='$eDest
> 
> sedCmnd="s/$eSrce/$eDest/"
> echo '$sedCmnd='$sedCmnd
> 
> # [ -d `sed -e $sedCmnd` ] && echo "Destination exists" || echo "Destination
> doesn't exist"
> 
> find $srce -type d | sed -e "$sedCmnd"
> 
> echo "Done."
> 
> ----- End forwarded message -----
> 
> 
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-- 
Edward H. Hill III, PhD
office:  MIT Dept. of EAPS;  Room 54-1424;  77 Massachusetts Ave.
            Cambridge, MA 02139-4307
email:   eh3 at mit.edu,  ed at eh3.com
URL:     http://web.mit.edu/eh3/
phone:   617-253-0098
fax:     617-253-4464
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