WebJun 16, 2011 · Print N lines before and after matching lines. Using -C n option you can print N lines before and after matching lines. If you have GNU grep, it's the -A / --after-context option. Otherwise, you can do it with awk. awk '/regex/ {p=2} p > 0 {print $0; p--}' filename - works, yours not. Use the -A argument to grep to specify how many lines … WebDec 28, 2024 · This is because grep -An will output n+1 lines: the matched line + n lines after it. The matched line will be suppressed if we pipe this result to grep -v ‘pattern’. But we’ll have n lines instead of the n-th line after the match. To get the n-th line after each match, we can first use grep -An to find each block with n+1 lines.

How to make grep command return entire matching line

WebIf you want only what is in the parenthesis, you need something that supports capturing sub matches (Named or Numbered Capturing Groups). I don't think grep or egrep can do this, perl and sed can. For example, with perl: If a file called foo has a line in that is as follows: /adsdds / And you do: perl -nle 'print $1 if /\/(\w).+\//' foo eucerin pro acne soft cleansing foam

Display all output but highlight search matches - Super User

WebIf you want to display all lines that contain a sequence of four digits that is itself not part of any longer sequence of digits, one way is: grep -P '(? WebNov 1, 2010 · create an index on lines matching a numeric regular expression. The capture group indicates the part that's to be indexed, and the options show each line has a unique, numeric index. $ zindex file.gz --regex 'id:([0-9]+)' --numeric --unique Example: create an index on the second field of a CSV file: $ zindex file.gz --delimiter , --field 2 WebThe matched lines are in random places in the file. When a line matches, only the line itself is relevant, no context above or below. Normally, I would search with / and jump … fireworks witham