Bash script search, improve performance with large files Post: 303033259

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Improve Performance

hi someone tell me which ways i can improve disk I/O and system process performance.kindly refer some commands so i can do it on my test machine.thanks, Mazhar

2. Shell Programming and Scripting

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...

3. Shell Programming and Scripting

Improve the performance of a shell script

Hi Friends, I wrote the below shell script to generate a report on alert messages recieved on a day. But i for processing around 4500 lines (alerts) the script is taking aorund 30 minutes to process. Please help me to make it faster and improve the performace of the script. i would be very...

4. Shell Programming and Scripting

Want to improve the performance of script

Hi All, I have written a script as follows which is taking lot of time in executing/searching only 3500 records taken as input from one file in log file of 12 GB Approximately. Working of script is read the csv file as an input having 2 arguments which are transaction_id,mobile_number and search...

5. Programming

Help with improve the performance of grep

Input file: #content_1 12314345345 242467 #content_14 436677645 576577657 #content_100 3425546 56 #content_12 243254546 1232454 . . Reference file: content_100

6. Shell Programming and Scripting

Performance issue in Grepping large files

I have around 300 files(*.rdf,*.fmb,*.pll,*.ctl,*.sh,*.sql,*.prog) which are of large size. Around 8000 keywords(which will be in the file $keywordfile) needed to be searched inside those files. If a keyword is found in a file..I have to insert the filename,extension,catagoery,keyword,occurrence...

7. UNIX for Dummies Questions & Answers

How to improve the performance of this script?

Hi , i wrote a script to convert dates to the formate i want .it works fine but the conversion is tkaing lot of time . Can some one help me tweek this script #!/bin/bash file=$1 ofile=$2 cp $file $ofile mydates=$(grep -Po '+/+/+' $ofile) # gets 8/1/13 mydates=$(echo "$mydates" | sort |...

8. Shell Programming and Scripting

Copying large files in a bash script stops execution

Hello, I'm new to this forum and like to first of all say hello to everyone. I've got a really annoying problem at the moment. I'm trying to rsync some files (about 200MB with one file of 120MB) from a Raspberry PI with raspbian to a debian server via rsync. This procedure is stored in a...

9. Programming

Improve the performance of my C++ code

Hello, Attached is my very simple C++ code to remove any substrings (DNA sequence) of each other, i.e. any redundant sequence is removed to get unique sequences. Similar to sort | uniq command except there is reverse-complementary for DNA sequence. The program runs well with small dataset, but...

LEARN ABOUT SUNOS

factor

factor(1)							   User Commands							 factor(1)

NAME

       factor - obtain the prime factors of a number

SYNOPSIS

       factor [integer]

DESCRIPTION

       factor  writes to standard input all prime factors for any positive integer less than or equal to 10**14. The prime factors are written the
       proper number of times.

       If factor is used without an argument, it waits for an integer to be entered. After entry of the integer, it factors it, writes	its  prime
       factors the proper number of times, and then waits for another integer. factor exits if a 0 or any non-numeric character is entered.

       If factor is invoked with an argument (integer), it writes the integer, factors it and writes all the prime factors as described above, and
       then exits. If the argument is 0 or non-numeric, factor writes a 0 and then exits.

       The maximum time to factor an integer is proportional to sqrt(n), where n is the integer which is entered. factor will take this time  when
       n is prime or the square of a prime.

OPERANDS

       integer	       Any positive integer less than or equal to 10**14.

EXIT STATUS

       0	Successful completion.

       1	An error occurred.

DIAGNOSTICS

       factor prints the error message Ouch! for input out of range or for garbage input.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWesu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       attributes(5)

SunOS 5.10							    31 Jan 1996 							 factor(1)