For my own notes.. if you are using grep to parse through the contents of a file and want to see the preceding or proceeding content than the line that matched your query, you can use the following options
preceding content [code]grep -B NUMBER_OF_LINES_TO_DISPLAY query filename[/code]
for example, if I was searching for kudithipudi in a file names access.log and want to see 2 lines prior to the match, I would use [code]grep -B 2 kudithipudi access.log[/code]
proceeding content[code]grep -A NUMBER_OF_LINES_TO_DISPLAY query filename[/code]
for example, if I was searching for kudithipudi in a file names access.log and want to see 2 lines after the match, I would use [code]grep -A 2 kudithipudi access.log[/code]
preceding and proceeding content[code]grep -C NUMBER_OF_LINES_TO_DISPLAY query filename[/code]
for example, if I was searching for kudithipudi in a file names access.log and want to see 2 lines before and after the match, I would use [code]grep -C 2 kudithipudi access.log[/code]
