[SOLVED] A shell script to search and replace strings on certain logic

rockie321 · 05-05-2011, 10:47 AM

Need help on a shell script that do the following.

Inputs

A file A that contains the following.

PHP Code:



OA ABC02 
Blade #7 Status: 
    Unit Identification LED: On 
OA ABC02 
Blade #1 Status: 
    Unit Identification LED: Blinking 
OA BCA03 
Blade #2 Status: 
    Unit Identification LED: On 
OA CDE03 
Blade #10 Status: 
    Unit Identification LED: On

--------------------------------------------

A file B that contains the following

PHP Code:



[B]ABC02[/B] 
a120 
a2g2 
a32s 
a45e 
a53a 
a6ea 
a74r 
a8rd 
a9df 
a10d 
a11d 
a12r 
a13r 
 
[B]BCA03[/B] 
b1aa 
b11a 
b14a 
b5ds 
b67d 
b7ds 
b8df 
b9gh 
b10g 
b11f 
b12e 
b13f 
 
[B]CDE03[/B] 
c165 
c277 
c377 
c433 
c323 
c090 
c434 
c832 
c844 
c145 
c133 
c132 
c153

I now need to replace the number that comes after the # (Blade #7 Status) on the first file by the name on the 7th line after the heading (ABC02)of that paragraph in the second file.

So that the final output should read.

OA ABC02
Blade #a74r Status:
Unit Identification LED: On
OA ABC02
Blade #a120 Status:
Unit Identification LED: Blinking
OA BCA03
Blade #b11a Status:
Unit Identification LED: On
OA CDE03
Blade #c145 Status:
Unit Identification LED: On

Any help would be highly appreciated

colucix · 05-06-2011, 02:21 AM

What have you tried so far? What is your skillness in shell programming? It would be better to see where you're stuck and try to answer specific questions, instead of creating a new script by scratch!

grail · 05-06-2011, 02:22 AM

Well its crude, but something like this might get you going:

Code:

#!/bin/bash

while read -r line
do
    [[ $line =~ ^OA ]] && GROUP=${line#* }

    if [[ $line =~ ^Blade ]]
    then
        NUM=${line#*#}
        NUM=${NUM% *}
        RESULT=$(grep $GROUP -A$NUM fileB | tail -1)
        echo "Blade #$RESULT Status:" >> tmp
        continue
    fi

    echo "$line" >> tmp
done<fileA

mv tmp fileA

archtoad6 · 05-18-2011, 09:00 AM

rockie321,

Welcome to LQ. Hope your time here helps you as much as mine has helped me.

Please put code, command line output, config files, etc. inside [CODE] tags, aka "Code:" blocks.

It will make your posts easier to read, & that will get you more, faster, better answers. -- Help us help you.
BTW, You can edit your post(s) to do this retroactively. Please do this ASAP; well, ASAC (as soon as convenient).

I have been trying to follow this thread & contribute, but it's too difficult to read w/o the "Code:" blocks.

Thank you, & again, welcome.

rockie321 · 06-14-2011, 08:42 AM

Thanks again Grail. Got exactly what was needed

archtoad6 · 06-16-2011, 04:04 PM

rockie321,

Thanks for trying to comply w/ my request for "Code:" blocks; unfortunately, you used "PHP Code:" blocks, which are different, instead.

Would it be too much to ask you to try to fix them?