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Full Discussion: Bash Scipting (New); Run multiple greps > multiple files
Top Forums Shell Programming and Scripting Bash Scipting (New); Run multiple greps > multiple files Post 302753389 by LDHB2012 on Tuesday 8th of January 2013 04:57:03 PM
Old 01-08-2013
Quote:
Originally Posted by Scrutinizer
Hi, first, try these modifications to that code:
Code:
awk 'NR==FNR{A[$1]; next} { for(i in A) if($0~i){f=i ".txt"; print>>f; close(f) }}' infile "$file"


With this one, that I already mentioned had worked. Is there a reason why it would take a pretty large amount of time to complete the script, while creating just one file for one search string is done in 2 seconds.

Is there a more effecient way of writing the code to make it faster? Is there another way to write this code, in order to find errors easier, where I can print "something" when there's an error?

---------- Post updated at 04:57 PM ---------- Previous update was at 01:49 PM ----------

Quote:
Originally Posted by Scrutinizer
Try:
Code:
awk 'NR==FNR{A[$1]; next} { for(i in A) if($0~i){f=i ".txt"; print>>f; close(f); next }}1'  infile "$file" > file.other

Good Afternoon Scrutinizer,

I'm testing this code and there's something very funny about it. First off, the things that are being searched have a file created IMMEDIATELY, but not yet finished being searched until 30 minutes. To manually grep these strings out of the whole directory, it takes less than 2 seconds.

The results between manual search and script finishing are different. Also, the scripts returns different results when ran once, deleted and then ran again. None of the data changed, only the output files have discrepancies. I'm not sure why this would be...

-David
 

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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)
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