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Shell Programming and Scripting

Delete duplicates via script?

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# 8  
Old 10-17-2010
ok, thank you, i will try the Diff.. the array option would mean still i have to compare manually if i read it right, which is futile because it is >10K files
# 9  
Old 10-17-2010
Code:
#!/usr/bin/env ruby  -w

require 'fileutils'
Dir["./A/*"].each do |d|
  name=File.basename(d) if File.directory?(d)
  if File.exists?("B/"+name)
    print "#{name} exists in #{"B/"+name}\n"
    print "Deleting %s\n" % name
    FileUtils.rm_r(d, :force => true)
  end
end

This User Gave Thanks to kurumi For This Post:
Y-T
# 10  
Old 10-17-2010
Ah, that works too, kurumi, thank you Smilie
# 11  
Old 10-18-2010
Code:
for i in FolderA;do
  ls ${i}/* | while read file;do
    tfile=`basename $file`
    if [ -f FolderB/${tfile} ];then
      rm FolderB/${tfile}
    fi
  done
done

This User Gave Thanks to summer_cherry For This Post:
Y-T
# 12  
Old 10-18-2010
Simple
shell code:
  1. while read file

  2. do rm -f FolderB/$file

  3. done < <(ls FolderA)
This User Gave Thanks to frans For This Post:
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# 13  
Old 10-18-2010
Note: that is bash code, not shell code.
# 14  
Old 10-18-2010
Quote:
Originally Posted by Scrutinizer
Note: that is bash code, not shell code.
According to Wikipedia Smilie

Quote:
Bash is a free software Unix shell written for the GNU Project. Its name is an acronym which stands for Bourne-again shell.[3] The name is a pun on the name of the Bourne shell (sh), an early and important Unix shell written by Stephen Bourne and distributed with Version 7 Unix circa 1978,[4] and the common Christian concept of born again. Bash was created in 1987 by Brian Fox. In 1990 Chet Ramey became the primary maintainer.[5]

Bash is a POSIX shell with a number of extensions. It is the shell for the GNU operating system from the GNU Project. It can be run on most Unix-like operating systems. It is the default shell on most systems built on top of the Linux kernel as well as on Mac OS X and Darwin. It has also been ported to Microsoft Windows using Subsystem for UNIX-based Applications (SUA), or POSIX emulation provided by Cygwin and MSYS. It has been ported to MS-DOS by the DJGPP project and to Novell NetWare.
I think any (command line style) scripting code that is designed to work in shell is "shell code" isn't it?
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