11-29-2011
Find records with matching patterns
Hi,
I need to find records with a search string from a file. Search strings are provided in a file.
For eg. search_String.txt file is like below
chicago
mexico
newark
sanhose
and the file from where the records need to be fetched is given below
src_file:
xxx|chicago|12/31/2011|abc@xyz.com|installed
yyy|sanhose|12/30/2011|yyy@xyz.com|deleted
zzz|newark|11/30/2011|zzz@xyz.com|installed
ccc|denver|12/31/2011|ccc@xyz.com|installed
I have written a code as below using grep
#!/usr/bin/ksh
LIST=search_String.txt
while read line
do
grep ${line} src_file >> OUTPUT.TXT
done < ${LIST}
exit 0
This code works. But the problem am facing is my src_file is a very huge file having around 23 million records and I need to search for 1200 strings from this src_file and get the records from src_file.
Given this situation my code runs for hours.
Could anyone of you help me to understand if there is a better way for this search?
Thanks
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LEARN ABOUT CENTOS
grub-render-label
GRUB-RENDER-LABEL(1) User Commands GRUB-RENDER-LABEL(1)
NAME
grub-render-label - generate a .disk_label for Apple Macs.
SYNOPSIS
grub-render-label [OPTION...] [OPTIONS]
DESCRIPTION
Render Apple .disk_label.
-b, --bgcolor=COLOR
use COLOR for background
-c, --color=COLOR
use COLOR for text
-f, --font=FILE
use FILE as font (PF2).
-i, --input=FILE
read text from FILE.
-o, --output=FILE
set output filename. Default is STDOUT
-t, --text=STRING
set the label to render
-v, --verbose
print verbose messages.
-?, --help
give this help list
--usage
give a short usage message
-V, --version
print program version
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.
REPORTING BUGS
Report bugs to <bug-grub@gnu.org>.
SEE ALSO
The full documentation for grub-render-label is maintained as a Texinfo manual. If the info and grub-render-label programs are properly
installed at your site, the command
info grub-render-label
should give you access to the complete manual.
grub-render-label (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-RENDER-LABEL(1)