Any way to improve performance of this script Post: 302297993

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Top Forums Shell Programming and Scripting Any way to improve performance of this script Post 302297993 by sirababu on Monday 16th of March 2009 11:30:55 AM

03-16-2009

Registered User

Any way to improve performance of this script

I have a data file of 2 gig

I need to do all these, but its taking hours, any where i can improve performance, thanks a lot

#!/usr/bin/ksh
echo TIMESTAMP="$(date +'_%y-%m-%d.%H-%M-%S')"
function showHelp {
cat << EOF >&2
syntax extreme.sh FILENAME
Specify filename to parse
EOF
echo "$*" >&2
exit 1;
}
if [ $# -gt 1 -o $# -eq 0 ]; then showHelp "Please Specify Only One File\n";fi
#if [ $# -eq 0 ]; then showHelp "Please Specify Only One File\n";fi
sed -e "/$UNKNOWN SEGMENT/d" $1 > $1.tmp
mv $1.tmp $1
for i in `cut -c216-231 $1 |uniq`
do
awk /$i/ $1 > $i.file
split -a 4 -l 20000 $i.file $i.file
rm $i.file
FILES=01
for y in `ls $i*`
do
NUM_OF_FILES="$(ls $i* |wc -l|tr -d " ")"
if [ $NUM_OF_FILES -lt 10 ];then
NUM_OF_FILES=0$NUM_OF_FILES
sed -e "s/./$NUM_OF_FILES/230" -e "s/.//232" -e "s/../$FILES/110" -e "s/../$FILES/225" -e "s/./$NUM_OF_FILES/468" -e "s/.//470" $y |nl -nrz -ba -w6 > $y.tmp
else
NUM_OF_FILES=$NUM_OF_FILES
sed -e "s/./$NUM_OF_FILES/230" -e "s/.//232" -e "s/../$FILES/110" -e "s/../$FILES/225" -e "s/./$NUM_OF_FILES/468" -e "s/.//470" $y |nl -nrz -ba -w6 > $y.tmp
fi
FILES=`expr $FILES + 1`
typeset -Z2 FILES
mv $y.tmp $y
done
cat $i* |nl -nrz -ba -w7 > $i.file
rm $i.*aa*
done
cat *.file > $1.new
cut -f2,1- $1.new |sed 's/ //1' > $1.new.tmp
mv $1.new.tmp $1.new
awk '{one=substr($0,1,13); two=substr($0,525,13);gsub(two,one); print}' $1.new |cut -f2- > $1.new.tmp
mv $1.new.tmp $1.new
rm -f *.file
echo "Please Check the Modified \"$1.new\" in the current directory"
echo TIMESTAMP="$(date +'_%y-%m-%d.%H-%M-%S')"

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LEARN ABOUT OPENSOLARIS

gvfs-save

gvfs-save(1)							   User Commands						      gvfs-save(1)

NAME

       gvfs-save - save information to a file using the VFS system

SYNOPSIS

       gvfs-save [-b] [-c] [-a] [-p] [-v] [-e] URI

DESCRIPTION

       gvfs-save saves information to a file using the VFS system.

OPTIONS

       The following options are supported:

       -b	Create backup

       -c	Only create if not existing

       -a	Append to end of the file

       -p	When creating a file, restrict access to the current user only

       -v	Print etag that the end

       -e	The etag of the file being overwritting

EXAMPLES

       Example 1: Append a string to the end of a local file

       example% echo "hello" | gvfs-save file:///tmp/example

       Example 2: Append a file to a remote file storing a backup

       example% gvfs-cat file:///tmp/file | gvfs-save -b smb://server/dir/file

ENVIRONMENT VARIABLES

       See environ(5) for descriptions of the following environment variables: NLSPATH.

EXIT STATUS

       The exit value 0 is returned regardless of success or failure.

FILES

       The following files are used by this application:

       /usr/bin/gvfs-save      Executable to save information to a file using the VFS system

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWgnome-gvfs		   |
       +-----------------------------+-----------------------------+
       |Interface stability	     |Volatile			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       gvfs-copy(1),  gvfs-cat(1), gvfs-less(1), gvfs-ls(1), gvfs-mkdir(1) gvfs-monitor-dir(1), gvfs-monitor-file(1), gvfs-mount(1), gvfs-move(1),
       gvfs-rename(1), gvfs-open(1), gvfs-rm(1), gvfs-info(1), gvfs-trash(1), gvfs-tree(1), attributes(5), environ(5)

NOTES

       Written by Alvaro Lopez Ortega, Sun Microsystems Inc., 2008.

SunOS 5.11							    25 Mar 2008 						      gvfs-save(1)

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