You might want to build an "alternation regex", with not too many keywords, and modify the matching slightly. Compare performance of
to this
seems to make a factor of roughly 7. The output seems to be identical. Please try and report back.
I just did this one again and i got it working. I noticed the -F";" was missing so i added that and it worked flawlessly. The complete script runs in about 20 sec now which was more then 7 min first.
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 Replies)
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 Replies)
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... (10 Replies)
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... (6 Replies)
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... (8 Replies)
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 |... (5 Replies)
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... (3 Replies)
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... (11 Replies)
Discussion started by: yifangt
11 Replies
LEARN ABOUT NETBSD
lam
LAM(1) BSD General Commands Manual LAM(1)NAME
lam -- laminate files
SYNOPSIS
lam [-f min.max] [-p min.max] [-s sepstring] [-t c] file ...
DESCRIPTION
lam copies the named files side by side onto the standard output. The n-th input lines from the input files are considered fragments of the
single long n-th output line into which they are assembled. The name ``-'' means the standard input, and may be repeated.
Normally, each option affects only the file after it. If the option letter is capitalized it affects all subsequent files until it appears
again uncapitalized. The options are described below.
-f min.max Print line fragments according to the format string min.max, where min is the minimum field width and max the maximum field
width. If min begins with a zero, zeros will be added to make up the field width, and if it begins with a '-', the fragment
will be left-adjusted within the field.
-p min.max Like -f, but pad this file's field when end-of-file is reached and other files are still active.
-s sepstring Print sepstring before printing line fragments from the next file. This option may appear after the last file.
-t c The input line terminator is c instead of a newline. The newline normally appended to each output line is omitted.
To print files simultaneously for easy viewing use pr(1).
EXAMPLES
The command
lam file1 file2 file3 file4
joins 4 files together along each line. To merge the lines from four different files use
lam file1 -S "
" file2 file3 file4
Every 2 lines of a file may be joined on one line with
lam - - < file
and a form letter with substitutions keyed by '@' can be done with
lam -t @ letter changes
SEE ALSO join(1), pr(1), printf(3)BSD December 1, 2001 BSD