Pattern matching in file and then display 10 lines above every time - Page 3

digitalrg · #1 (**permalink**) 04-09-2009

Quote:

Originally Posted by Franklin52

With awk:

Code:

awk '/total/{c=10;next}c-->0' file

Regards

Thanks Franklin52
Sorry for the streching the thread.. as iam new bie in the Unix....

with the above command it starts printing 10 lines below the line with total, so if i wish to print that line with total also what needs to be done.......
Regards

digitalrg · #2 (**permalink**) 04-10-2009

Hi Franklin52
Sorry to extend again... if i want to introduce a line of
=============================================
after every 10 lines of pattern total what shall i do ?

Thanks

Franklin52 · #3 (**permalink**) 04-10-2009

Quote:

Originally Posted by digitalrg

Hi Franklin52
Sorry to extend again... if i want to introduce a line of
=============================================
after every 10 lines of pattern total what shall i do ?

Thanks

Something like this?

Code:

awk '/total/{c=11}c-->0{print;if(c==0){print "======"}}' file

digitalrg · #4 (**permalink**) 04-10-2009

Thanks Franklin this didnt work.. no difference.. in the output

Franklin52 · #5 (**permalink**) 04-10-2009

Quote:

Originally Posted by digitalrg

Thanks Franklin this didnt work.. no difference.. in the output

It works fine on my system, but maybe not with an earlier version of awk, try this:

Code:

awk '/total/{c=11}c>0{c--;print;if(c==0){print "======"}}' file

Regards

digitalrg · #6 (**permalink**) 04-13-2009

Great that works
Thanks alot Franklin
Have a nice time

quirkasaurus · #7 (**permalink**) 04-13-2009

brute force in ksh works juuuuust fine:

Code:


pattern=droberts

cat /etc/passwd |
while read line ; do

  lines[9]=${lines[8]}
  lines[8]=${lines[7]}
  lines[7]=${lines[6]}

  lines[6]=${lines[5]}
  lines[5]=${lines[4]}
  lines[4]=${lines[3]}

  lines[3]=${lines[2]}
  lines[2]=${lines[1]}
  lines[1]=${lines[0]}
  lines[0]=$line

  if [[ $line = *${pattern}* ]]; then

    for x in 9 8 7 6 5 4 3 2 1 0 ; do

      print "${lines[x]}"

    done

  fi

done

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