Question

I have a very specific problem, I want to search for the line containing the first word
*Contro_Contact in file1 and when it is found I want to replace the line which comes after that 2 rows downs with another line from anthor file2 so that the parameter are changed automatically fom the file 2

*CONTROL_CONTACT
$#  slsfac    rwpnal    islchk    shlthk    penopt    thkchg     orien    enmass
0.100000     0.000         2         1         4         0         1         0

The output could be

*CONTROL_CONTACT
$#  slsfac    rwpnal    islchk    shlthk    penopt    thkchg     orien    enmass
0.2340000     0.000         2         1         4         0         1         0

The changed line I have from another file so its not the problem.

I will be waiting for experts suggestions.

Answer 1

awk 'N != 0 || $0 != "*CONTROL_CONTACT"
  N == 0 && $0 =="*CONTROL_CONTACT"{
    N = 1; print; getline; print
    getline; getline < "file2"; print}' file1