Sponsored Content
Top Forums UNIX for Dummies Questions & Answers retrieve lines using sed, grep or awk Post 302300812 by Whiteboard on Wednesday 25th of March 2009 05:51:23 AM
Old 03-25-2009
Code:
$ grep -B 2 -A 2 "Third line2" filename
BEGIN
Second line
Third line2
Fourth line
END

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to awk/sed/grep lines which contains a pattern at a given position

Dear friends I am new to linux and was trying to split some files userwise in our linux server. I have a data file of 156 continuous columns named ecscr final. I want the script to redirect all the lines containing a pattern of 7 digits to separate files. I was using grep to do that,... (2 Replies)
Discussion started by: anoopvraj
2 Replies

2. Shell Programming and Scripting

How to retrieve digital string using sed or awk

Hi, I have filename in the following format: YUENLONG_20070818.DMP HK_20070818_V0.DMP WANCHAI_20070820.DMP KWUNTONG_20070820_V0.DMP How to retrieve only the digital part with sed or awk and return the following format: 20070818 20070818 20070820 20070820 Thanks! Victor (3 Replies)
Discussion started by: victorcheung
3 Replies

3. Shell Programming and Scripting

sed/awk to retrieve max year in column

I am trying to retrieve that max 'year' in a text file that is delimited by tilde (~). It is the second column and the values may be in Char format (double quoted) and have duplicate values. Please help. (4 Replies)
Discussion started by: CKT_newbie88
4 Replies

4. Shell Programming and Scripting

cut, sed, awk too slow to retrieve line - other options?

Hi, I have a script that, basically, has two input files of this type: file1 key1=value1_1_1 key2=value1_2_1 key4=value1_4_1 ... file2 key2=value2_2_1 key2=value2_2_2 key3=value2_3_1 key4=value2_4_1 ... My files are 10k lines big each (approx). The keys are strings that don't... (7 Replies)
Discussion started by: fzd
7 Replies

5. Shell Programming and Scripting

Sed/awk to delete single lines that aren't touching other lines

Hello, I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below). Example: one two three four five six seven eight I want it to look like: (6 Replies)
Discussion started by: slimjbe
6 Replies

6. Shell Programming and Scripting

AWK/GREP: grep only lines starting with integer

I have an input file 12.4 1.72849432773174e+01 -7.74784188610632e+01 12.5 9.59432114416327e-01 -7.87018212757537e+01 15.6 5.20139995965960e-01 -5.61612429666624e+01 29.3 3.76696387248366e+00 -7.42896194101892e+01 32.1 1.86899877018077e+01 -7.56508762501408e+01 35 6.98857157014640e+00... (2 Replies)
Discussion started by: chrisjorg
2 Replies

7. Shell Programming and Scripting

How to print the lines between the pattern using awk/grep/sed?

Hi, I need a help to search a pattern and print the multiple lines between them. Input file: Tue May 29 12:30:33 EDT 2012:threadWebContainer : 357:com.travimp.hotelierlinks.abba.service.RequestHandler.requestService(String, ITICSDataSet): hotelCancelReservation request: ... (4 Replies)
Discussion started by: aroragaurav.84
4 Replies

8. Shell Programming and Scripting

Print lines between two strings multiple occurencies (with sed, awk, or grep)

Hello, I can extract lines in a file, between two strings but only one time. If there are multiple occurencies, my command show only one block. Example, monfichier.txt contains : debut_sect texte L1 texte L2 texte L3 texte L4 fin_sect donnees inutiles 1 donnees inutiles 2 ... (8 Replies)
Discussion started by: theclem35
8 Replies

9. Shell Programming and Scripting

Retrieve information Text/Word from HTML code using awk/sed

awk/sed newbie here. I have a HTML file and from that file and I would like to retrieve a text word. <font face=arial size=-1><li><a href=/value_for_clients/Tokyo/abc_process.txt>abc</a> NDK Version: 4.0 </li> <font face=arial size=-1><li><a... (6 Replies)
Discussion started by: sk2code
6 Replies

10. UNIX for Beginners Questions & Answers

How to find=grep or maybe sed/awk for multiple lines of text?

Hi, I am running the following: PASS="username/password" sqlplus -s << EOF | grep -v "^$" $PASS set feedback off set heading off set termout off select name from v\$database ; exit EOF Which gives ERROR: ORA-28002: the password will expire within 5 days PSMP1 (1 Reply)
Discussion started by: newbie_01
1 Replies
ZGREP(1)                                                      General Commands Manual                                                     ZGREP(1)

NAME
zgrep - search possibly compressed files for a regular expression SYNOPSIS
zgrep [ grep_options ] [ -e ] pattern filename... DESCRIPTION
Zgrep invokes grep on compressed or gzipped files. These grep options will cause zgrep to terminate with an error code: (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*). All other options specified are passed directly to grep. If no file is specified, then the standard input is decompressed if necessary and fed to grep. Otherwise the given files are uncompressed if necessary and fed to grep. If the GREP environment variable is set, zgrep uses it as the grep program to be invoked. EXIT CODE
2 - An option that is not supported was specified. AUTHOR
Charles Levert (charles@comm.polymtl.ca) SEE ALSO
grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1) ZGREP(1)
All times are GMT -4. The time now is 10:37 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy