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Full Discussion: [awk] find pattern, change next two lines
Top Forums Shell Programming and Scripting [awk] find pattern, change next two lines Post 302897748 by Yoda on Tuesday 15th of April 2014 05:12:42 PM
Old 04-15-2014
Quote:
Originally Posted by origamisven
Thanks a lot, Yoda, can you explain the syntax to me? I don't want to die stupid.
Sure.
Code:
awk '
        # Look for pattern VEL in each record
        /VEL/ {
                # if found set variable c value to 3
                c = 3
        }
        # For each subsequent records decrement variable c value by 1 and check if it is >= 1
        # This condition is to replace next 2 records as you requested
        c-- >= 1 {
                # Substitute SOL with VEL
                sub ( "SOL", "VEL")
        }
        # 1 == true, default awk operation is print the record
        1
' file

This User Gave Thanks to Yoda For This Post:
origamisven
 

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NAME

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DESCRIPTION

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	      output file if the ouput file is unspecified the stdout will be used

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