Since you have remainded me of the movie 'matrix' - am all charged up to answer your question to an extent atleast
If this is not modified, try assigning it to a variable and reuse that, instead of computing it each time.
Writing to a file whilst in the loop block will greatly reduce the performance of the script, what happens for every write call is ...
Ideally what should be done is
instead write it to the outer block something like
In this method, there will be n + 2 (approx) calls to file libs for 'n' units of write
instead of
In this method, there will be 3n calls for 'n' units of write, which will scale badly as 'n' progresses ...
My input file contains of blocks like the following
first I search for the start of the block with this expression: ' #Game No.*"
then I put out all following lines while I find this expression: '.*wins.*'
the loop around this is to check if the current output file size reaches the split limit
so the `expr "${lines[${i}]}" : '.*wins.*'` command is executed at every single line of the input file. That are ~800.000 times.
0.03sec per iteration means ~7 hours for the whole process.
I have "inherited" a OmniOS (illumos based) server.
I noticed rsync is significantly slower in respect to my reference, FreeBSD 12-CURRENT, running on exactly same hardware.
Using same hardware, same command with same source and target disks, OmniOS r151026 gives:
test@omniosce:~# time... (11 Replies)
Gents,
Is there the possibility to improve this script to be able to have same output information.
I did this script, but I believe there is a very short code to get same output
here my script
awk -F, '{if($10>0 && $10<=15) print $6}' tmp1 | sort -k1n | awk '{a++} END { for (n in a )... (23 Replies)
Gents.
I have 2 different scripts for the same purpose:
raw2csv_1
Script raw2csv_1 finish the process in less that 1 minute
raw2csv_2
Script raw2csv_2 finish the process in more that 6 minutes.
Can you please check if there is any option to improve the raw2csv_2. To finish the job... (4 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 "$mydates" | sort |... (5 Replies)
Hello,
I extracted a list of files in a directory with the command ls . However this is not my computer, so the ls functionality has been revamped so that it gives the filesizes in front like this :
This is the output of ls command : I stored the output in a file filelist
1.1M... (5 Replies)
Hi,
Please tell me how to include parallel processing for the below code. Thanks in advance
I have a list of users directories in root directory. Each user has a directory by his /her username.
I am finding the size of each directorry using du -g command.. and checking if the size exceeds 3GB a... (6 Replies)
I need a script to process a huge single line text file:
The sample of the text is:
"forward_inline_item": "Inline", "options_region_Australia": "Australia", "server_event_err_msg": "There was an error attempting to save", "Token": "Yes", "family": "Family","pwd_login_tab": "Enter Your... (1 Reply)
I have a data file of 2 gig
I need to do all these, but its taking hours, any where i can improve performance, thanks a lot
#!/usr/bin/ksh
echo TIMESTAMP="$(date +'_%y-%m-%d.%H-%M-%S')"
function showHelp {
cat << EOF >&2
syntax extreme.sh FILENAME
Specify filename to parse
EOF... (3 Replies)
I'm trying to strip any garbage that may be at the end of my text file and that part is working. The problem only seems to be with the really long lines in the file. When the head command is executed I am directing the output to a new file. The new file always get a null in the 4096 position but... (2 Replies)
Hi all,
Still a newbie and learning as I go ... as you do :)
Have created this script to report on disc usage and I've just included the ChkSpace function this morning.
It's the first time I've read a file (line-by-bloody-line) and would like to know if I can improve this script ?
FYI - I... (11 Replies)