Sponsored Content
Top Forums Shell Programming and Scripting aix :grep to get lines before and after string Post 302634509 by hfreyer on Thursday 3rd of May 2012 12:23:33 PM
Old 05-03-2012
You need to retain the output until the end and reset it at every match.
Here is a sample code, though not very elegant:
Code:
nawk 'c-->0{res=sprintf("%s%s\n",res,$0)};$0~s{res="";if(b)for(c=b+1;c>1;c--)res=sprintf("%s%s\n",res,r[(NR-c+1)%b]);res=sprintf("%s%s\n",res,$0);c=a}b{r[NR%b]=$0}END{printf("%s",res)}' b=2   a=4 s="There is no process to read data written to a pipe" File.log

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

grep string & next n lines

need help on this. let say i hv 1 file contains as below: STRING Description bla bla bla Description yada yada yada Data bla bla Data yada yada how do i want to display n lines after the string? thanks in advance! (8 Replies)
Discussion started by: ashterix
8 Replies

2. Shell Programming and Scripting

grep string & a few lines after

i need to grep a STRING_A & the next few lines after the STRING_A example file: STRING_A yada yada line 1 line 2 STRING_B yada yada line 1 line 2 line 3 STRING_A yada yada line 1 line 2 line 3 line 4 STRING_A yada yada line 1 line 2 line 3 line 4 (7 Replies)
Discussion started by: ashterix
7 Replies

3. Shell Programming and Scripting

Like grep -v for a string over 2 lines? Sed?

Hi, I have a log file that I need to monitor as it's being written to, and I want to exclude certain strings from the output. At the moment I'm using ... tail -f LogFileName_`date +%d`.log | egrep -v "First String To Exclude | 2nd string | 3rd string" ...which works OK - but now I need to... (1 Reply)
Discussion started by: jake657
1 Replies

4. Shell Programming and Scripting

AIX equivalent to GNU grep's -B and -A [print lines after or before matching lines]

Hi folks I am not allowed to install GNU grep on AIX. Here my code excerpt: grep_fatal () { /usr/sfw/bin/gegrep -B4 -A2 "FATAL|QUEUE|SIGHUP" } Howto the same on AIX based machine? from manual GNU grep ‘--after-context=num’ Print num lines of trailing context after... (4 Replies)
Discussion started by: slashdotweenie
4 Replies

5. Shell Programming and Scripting

Print lines between two lines after grep for a text string

I have several very large file that are extracts from Oracle tables. These files are formatted in XML type syntax with multiple entries like: <ROW> some information more information </ROW> I want to grep for some words, then print all lines between <ROW> AND </ROW>. Can this be done with AWK?... (7 Replies)
Discussion started by: jbruce
7 Replies

6. Shell Programming and Scripting

Grep a string from input file and delete next three lines including the line contains string in xml

Hi, 1_strings file contains $ cat 1_strings /home/$USER/Src /home/Valid /home/Review$ cat myxml <projected value="some string" path="/home/$USER/Src"> <input 1/> <estimate value/> <somestring/> </projected> <few more lines > <projected value="some string" path="/home/$USER/check">... (4 Replies)
Discussion started by: greet_sed
4 Replies

7. Shell Programming and Scripting

Grep couple of consecutive lines if each lines contains certain string

Hello, I want to extract from a file like : 20120530025502914 | REQUEST | whatever 20120530025502968 | RESPONSE | whatever 20120530025502985 | RESPONSE | whatever 20120530025502996 | REQUEST | whatever 20120530025503013 | REQUEST | whatever 20120530025503045 | RESPONSE | whatever I want... (14 Replies)
Discussion started by: black_fender
14 Replies

8. Shell Programming and Scripting

Grep for the string and then print the next 4 lines

RHEL 5.8 I have a text file like below. I want to grep for a string and then print the next 4 lines including the line with the string I grepped for For eg: I want grep for the string HANS and then print the next 4 lines including HANS $ cat someText.txt JOHN NATIONALITY:... (7 Replies)
Discussion started by: omega3
7 Replies

9. Shell Programming and Scripting

Grep a string and count following lines starting with another string

I have a large dataset with following structure; C 0001 Carbon D SAR001 methane D SAR002 ethane D SAR003 propane D SAR004 butane D SAR005 pentane C 0002 Hydrogen C 0003 Nitrogen C 0004 Oxygen D SAR011 ozone D SAR012 super oxide C 0005 Sulphur D SAR013... (3 Replies)
Discussion started by: Syeda Sumayya
3 Replies

10. Shell Programming and Scripting

Grep three consecutive lines if each lines contains certain string

say we have : 2914 | REQUEST | whatever 2914 | RESPONSE | whatever 2914 | SUCCESS | whatever 2985 | RESPONSE | whatever 2986 | REQUEST | whatever 2990 | REQUEST | whatever 2985 | RESPONSE | whatever 2996 | REQUEST | whatever 2010 | SUCCESS | whatever 2013 | REQUEST | whatever 2013 |... (7 Replies)
Discussion started by: Saumitra Pandey
7 Replies
paste(1)						      General Commands Manual							  paste(1)

Name
       paste - merge file data

Syntax
       paste file1 file2...
       paste -dlist file1 file2...
       paste -s [-dlist] file1 file2...

Description
       In  the	first  two forms, concatenates corresponding lines of the given input files file1, file2, etc.	It treats each file as a column or
       columns of a table and pastes them together horizontally (parallel merging).

       In the last form, the command combines subsequent lines of the input file (serial merging).

       In all cases, lines are glued together with the tab character, or with characters from an optionally specified  list.   Output  is  to  the
       standard output, so it can be used as the start of a pipe, or as a filter, if - is used in place of a file name.

Options
       -       Used in place of any file name, to read a line from the standard input.	(There is no prompting).

       -dlist  Replaces  characters  of  all but last file with nontabs characters (default tab).  One or more characters immediately following -d
	       replace the default tab as the line concatenation character.  The list is used circularly, i. e. when exhausted, it is reused.	In
	       parallel  merging  (i. e. no -s option), the lines from the last file are always terminated with a new-line character, not from the
	       list.  The list may contain the special escape sequences: 
 (new-line), 	 (tab), \ (backslash), and  (empty string, not a null
	       character).   Quoting  may  be  necessary,  if characters have special meaning to the shell (for example, to get one backslash, use
	       -d"\\" ).
	       Without this option, the new-line characters of each but the last file (or last line in case of the -s option) are  replaced  by  a
	       tab character.  This option allows replacing the tab character by one or more alternate characters (see below).

       -s      Merges  subsequent  lines  rather  than	one  from  each input file.  Use tab for concatenation, unless a list is specified with -d
	       option.	Regardless of the list, the very last character of the file is forced to be a new-line.

Examples
       ls | paste -d" " -
       list directory in one column
       ls | paste - - - -
       list directory in four columns
       paste -s -d"	
" file
       combine pairs of lines into lines

Diagnostics
       line too long
		 Output lines are restricted to 511 characters.

       too many files
		 Except for -s option, no more than 12 input files may be specified.

See Also
       cut(1), grep(1), pr(1)

																	  paste(1)
All times are GMT -4. The time now is 03:13 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy