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Top Forums UNIX for Dummies Questions & Answers Insert a line in a sorted text file(s) Post 302539204 by neutronscott on Friday 15th of July 2011 04:27:07 PM
Old 07-15-2011
Like this?
Code:
for iFile in `ls *.txt`
do
  echo $iFile
  nawk -v new="$1" '!done && $0 > new { print new RS $0; done=1; next } 1' $iFile >temp.txt
  rm $iFile
  mv temp.txt $iFile
done

It goes through each line until it finds the line which is lexicographically greater, then it prints $1 before it. Then it stops messing with the data and just prints the rest...
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MPI_KMEANS(1)						      General Commands Manual						     MPI_KMEANS(1)

NAME
mpi_kmeans - K-Means clustering tool SYNOPSIS
mpi_kmeans [options] DESCRIPTION
mpi_kmeans is a program that uses k-means clustering to produce a list of cluster centers. The resulting data can be used by mpi_assign(1) to assign points to those cluster centers. OPTIONS
A summary of options is included below. Generic Options: --help Produce help message Input/Output Options: --data file Training file, one datum per line (default: "data.txt") --output file Output file, one cluster center per line (default: "output.txt") K-Means Options: --k num Number of clusters to generate (default: 100) --restarts num Number of k-means restarts (default: 0 = single run) --maxiter num Maximum number of k-means iterations (default: 0 = infinity) EXAMPLES
mpi_kmeans --k 2 --data example.txt --output clusters.txt SEE ALSO
mpi_assign(1) AUTHOR
mpi_kmeans was written by Peter Gehler <peter.gehler@tuebingen.mpg.de>. This manual page was written by Christian Kastner <debian@kvr.at>, for the Debian project (and may be used by others). April 11, 2011 MPI_KMEANS(1)
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