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Full Discussion: Beginner: Count & Sort Using Array's
Top Forums Shell Programming and Scripting Beginner: Count & Sort Using Array's Post 302494504 by yinyuemi on Monday 7th of February 2011 12:58:39 PM
Old 02-07-2011
when NR==FNR, code read through the mainfile file to get which the repeat time of item ($1) is over 1(++a[$1]>1), and give them a tag (b[$1]=1), next, NR>FNR(or NR!=FNR), code read throught the mainfile again, for this time, based on your rule (b[$1]==1, file1; b[$1]==0, file2), generate two output files: file1 and file2. Does it make sense?
 

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LEARN ABOUT SUSE

xzdiff

XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME

       xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files

SYNOPSIS

       xzcmp [cmp_options] file1 [file2]
       xzdiff [diff_options] file1 [file2]
       lzcmp [cmp_options] file1 [file2]
       lzdiff [diff_options] file1 [file2]

DESCRIPTION

       xzcmp  and  xdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1).  All options specified are passed
       directly to cmp or diff.  If only one file is specified, then the files compared are file1 (which must have a suffix of	a  supported  com-
       pression  format)  and  file1 from which the compression format suffix has been stripped.  If two files are specified, then they are uncom-
       pressed if necessary and fed to cmp(1) or diff(1).  The exit status from cmp or diff is preserved.

       The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils.

SEE ALSO

       cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1)

BUGS

       Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified.

Tukaani 							    2009-07-05								 XZDIFF(1)
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