Sponsored Content
Top Forums Shell Programming and Scripting Exclude multiple lines using grep Post 302982428 by drl on Wednesday 28th of September 2016 11:02:08 PM
Old 09-29-2016
Hi.

A version of grep, context grep, cgrep approach:
Code:
#!/usr/bin/env bash

# @(#) s1       Demonstrate extract paragraph, cgrep.
# Source for cgrep:
# https://sourceforge.net/projects/cgrep/ (verified 2016.09.28)

# Utility functions: print-as-echo, print-line-with-visual-space, debug.
# export PATH="/usr/local/bin:/usr/bin:/bin"
LC_ALL=C ; LANG=C ; export LC_ALL LANG
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
em() { pe "$*" >&2 ; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
C=$HOME/bin/context && [ -f $C ] && $C

FILE=${1-data1}
E=expected-output.txt

pl " Input data file $FILE:"
cat $FILE

pl " Expected output:"
cat $E

pl " Results:"
cgrep -D -1 +w='' "enabled" $FILE |
tee f1

pl " Verify results if possible:"
C=$HOME/bin/pass-fail
[ -f $C ] && $C || ( pe; pe " Results cannot be verified." ) >&2

exit 0

producing:
Code:
$ ./s1

Environment: LC_ALL = C, LANG = C
(Versions displayed with local utility "version")
OS, ker|rel, machine: Linux, 3.16.0-4-amd64, x86_64
Distribution        : Debian 8.6 (jessie) 
bash GNU bash 4.3.30

-----
 Input data file data1:
Service name: Bot_Serv1
Service is disabled
Preferred instances: botqa2,botqa3

Service name: Bot_Serv2
Service is enabled
Preferred instances: botqa2,botqa3


-----
 Expected output:
Service name: Bot_Serv2
Service is enabled
Preferred instances: botqa2,botqa3


-----
 Results:
Service name: Bot_Serv2
Service is enabled
Preferred instances: botqa2,botqa3


-----
 Verify results if possible:

-----
 Comparison of 4 created lines with 4 lines of desired results:
 Succeeded -- files (computed) f1 and (standard) expected-output.txt have same content.

The heart of this solution is:
Code:
cgrep -D -1 +w='' "enabled"

search for enabled, copy one line before, and all lines after until an empty line occurs.

Best wishes ... cheers, drl
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Grep on multiple lines

I 'm trying to grep 2 fieldds on 2 differnt lines. Like this: psit > file egrep -e '(NS|ES)' $file. Not working. If this succeeds then run next cmd else exit. Pls Help Gundu (13 Replies)
Discussion started by: gundu
13 Replies

2. Shell Programming and Scripting

grep multiple lines

Hey guys: I've been meaning to post this question for awhile...it is regarding grep. Let's say for example that the following entry is in logxx: Wed Feb 2 07:44:11 <vsm> 91030 Line 5 Severity 1 Vps 6 Call Answered - DN:8753101 CLID:5164665761 PI:83 If I do a grep 91030... (27 Replies)
Discussion started by: cdunavent
27 Replies

3. Shell Programming and Scripting

grep - to exclude lines beginning with pattern

11132 13069 11137 11142 13070 Can I use grep command to exclude all lines beginning with 13? I dont want to use grep -v 13 as potentially there will be a number with something like 11013 that I would exclude in error.. (2 Replies)
Discussion started by: frustrated1
2 Replies

4. Shell Programming and Scripting

grep multiple lines

Hi. I have this format on a textfile: VG Name /dev/vg00 PV Name /dev/dsk/c16t0d0 PV Name /dev/dsk/c18t0d0 PV Name /dev/dsk/c16t4d0 VG Name /dev/vg01 PV Name ... (6 Replies)
Discussion started by: jOOc
6 Replies

5. UNIX for Dummies Questions & Answers

grep command to find multiple strings in multiple lines in a file.

I want to search files (basically .cc files) in /xx folder and subfolders. Those files (*.cc files) must contain #include "header.h" AND x() function. I am writing it another way to make it clear, I wanna list of *.cc files that have 'header.h' & 'x()'. They must have two strings, header.h... (2 Replies)
Discussion started by: ritikaSharma
2 Replies

6. UNIX for Dummies Questions & Answers

grep in multiple lines

hi i have kind of below text in a file. I want to get a complete paragraph starting with START and ending with before another START) which has a particular string say XYZ or ABC START XYZ hshjghkjh 45 ljkfd fldjlj d jldf START 3493u ABC 454 4545454 4545454 45454 4545454 START ...... (3 Replies)
Discussion started by: reldb
3 Replies

7. UNIX for Advanced & Expert Users

grep across multiple lines

How do you grep 'select * from table_name' string from a script if the select * and from table_name are on 2 different lines ? like select * from table_name Any help would be greatly appreciated !!! Thanks RDR (4 Replies)
Discussion started by: RDR
4 Replies

8. UNIX for Dummies Questions & Answers

Grep multiple lines

I want to grep multiple lines from a text file. I want to grep all lines containing X,Y and NA in a single command. How do I go about doing that? This is what my text files look like: rs1983866 0.0983 10 100016313 rs1983865 0.5994 X 100016339 rs1983864 0.3272 11 100017453 rs7077266... (2 Replies)
Discussion started by: evelibertine
2 Replies

9. Shell Programming and Scripting

grep from multiple lines in several gz files

Hello all, I have been struggling to get grep work to my requirements. Basically I have to filter out patterns spread across multiple lines over hundreds of .gz files in a folder. And the output needs to be piped to a file. Here is the example: folder name: logs files in this folder:... (4 Replies)
Discussion started by: mandhan
4 Replies

10. Shell Programming and Scripting

Exclude lines in a file with matches with multiple Strings using egrep

Hi I have a txt file and I would like to use egrep without using -v option to exclude the lines which matches with multiple Strings. Let's say I have some text in the txt file. The command should not fetch lines if they have strings something like CAT MAT DAT The command should fetch me... (4 Replies)
Discussion started by: Sathwik
4 Replies
getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME
getusershell, setusershell, endusershell - get legal user shells SYNOPSIS
#include <unistd.h> char *getusershell(void); void setusershell(void); void endusershell(void); DESCRIPTION
The getusershell() function returns a pointer to a legal user shell as defined by the system manager in the file /etc/shells. If /etc/shells does not exist, the following locations of the standard system shells are used in its place: /bin/bash /bin/csh /bin/jsh /bin/ksh /bin/ksh93 /bin/pfcsh /bin/pfksh /bin/pfsh /bin/sh /bin/tcsh /bin/zsh /sbin/jsh /sbin/pfsh /sbin/sh /usr/bin/bash /usr/bin/csh /usr/bin/jsh /usr/bin/ksh /usr/bin/ksh93 /usr/bin/pfcsh /usr/bin/pfksh /usr/bin/pfsh /usr/bin/sh /usr/bin/tcsh /usr/bin/zsh /usr/sfw/bin/zsh /usr/xpg4/bin/sh The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells. The setusershell() function rewinds the file or the list. The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells. RETURN VALUES
The getusershell() function returns a null pointer on EOF. BUGS
All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved. NOTES
Restricted shells should not be listed in /etc/shells. SunOS 5.11 1 Nov 2007 getusershell(3C)
All times are GMT -4. The time now is 08:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy