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Top Forums Shell Programming and Scripting Script to Compare file size and delete the smaller Post 302681627 by JC_1 on Friday 3rd of August 2012 05:08:02 PM
Old 08-03-2012
Power Script to Compare file size and delete the smaller

I am pretty new to scripting, so I appreciate your advice in advance.
The problem:

100 directories each containing 2 files that have the same extension with random names. The only attribute that discriminates the files is size. I would like to write a script that compares the files for size and deletes the smaller of the two. Thanks! - OSX, X11, bash
 

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dircmp(1)						      General Commands Manual							 dircmp(1)

NAME
dircmp - Compares two directories SYNOPSIS
dircmp [-d] [-s] directory1 directory2 The dircmp command reads directory1 and directory2, compares their contents, and writes the results to standard output. STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: dircmp: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPTIONS
Displays for each common file name the differing contents of the two files, if any. The display format is the same as that of the diff command. Does not list the names of identical files. OPERANDS
The path name of a directory to be compared. DESCRIPTION
First, dircmp compares the file names in each directory. When the same file name appears in both, dircmp compares the contents of the two files. In the output, dircmp lists the files unique to each directory. It then lists the files with identical names but different contents. If entered without a option, dircmp also lists files that have both identical names and identical contents. NOTES
[Tru64 UNIX] In many cases, diff -r, rather than dircmp, is preferred. The dircmp command is marked LEGACY. The diff -r command should be used instead. EXAMPLES
To summarize the differences between the files in two directories, enter: dircmp proj.ver1 proj.ver2 This displays a summary of the differences between the directories proj.ver1 and proj.ver2. The summary lists separately the files found only in one directory or the other, and those found in both. If the file is found in both directories, the file is listed. If the files are identical, dircmp displays identical; otherwise, dircmp displays different. To show the details of the differences between files, enter: dircmp -d -s proj.ver1 proj.ver2 The -s option suppresses information about identical files. The -d option displays a diff listing for each of the differing files found in both directories. SEE ALSO
Commands: cmp(1), diff(1) Standards: standards(5) dircmp(1)
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