使用 AWK 进行文本解析

Question

I have a log file in the following format:

MTV     (B) VAR H'03 7F5B H'147 H'72FD
        (B) VAR H'00 5B30 H'147 H'2718
        (B) VAR H'05 C41F H'147 H'3AA4
        (B) VAR H'06 4901 H'147 H'2DFD
        (B) VAR H'00 D36E H'147 H'628A
MNC     (B) VAR H'03 500A H'147 H'3B1D
        (B) VAR H'06 743C H'147 H'2F60
        (B) VAR H'04 6C8C H'147 H'88C5
MTV     (B) VAR H'00 9C7D H'147 H'2DEB
        (B) VAR H'02 0A1B H'147 H'36B2
        (B) VAR H'03 1247 H'147 H'5693
        (B) VAR H'04 C757 H'147 H'6331

Around 15000 entries! I want user to provide pattern say MTV along with relative text co-ordinates and the script would parse them line by line! For example user provides pattern as MTV and relative co-ordinate as (row=2, column=4). So the output would be like this:

MTV 5B30
MTV 0A1B

Answer 1

awk -v p="MTV" -v r=2 -v c=4 '$1==p{a=NR-1}NR==a+r{print p,r==1?$(c+1):$c}' file
MTV 5B30
MTV 0A1B