Search text from a file and print text and one previous line too

Shell Programming and Scripting
1

Hi,

Please let me know how to find text and print text and its previous line. Please don't get irritated few days back I asked text and next line. I am using HP-UX 11.11

Thanks for your help.

2

One way:

awk '/pattern/{print s "\n" $0;exit}{s=$0}' file

Regards

3

I have no idea what HP-UX 11.11 is.. but normal *nix shell, you can do:

grep -A2 "sometext" somefile.ext

It would grab that text, and the two lines afterwards.. You can also use -B for before.

4

Or:

grep -B1 pattern file

or:

sed -n -e '/pattern/{x;p;x;p}' -e h file
5

Please "cfajohnson" What should I change in the following command to find text and its previous line.

I got command (text=start; awk '/'"$text"'/{n=2}n-->0' filename) for finding text and next line.

Thanks for your help.

6

Hi,

Command awk '/pattern/{print s "\n" $0;exit}{s=$0}' file only returns the first occurance of the pattern, it is not showing the next occurance.

Please help me, thanks

7

Remove the exit command:

awk '/pattern/{print s "\n" $0}{s=$0}' file

Regards