Sponsored Content
Top Forums Shell Programming and Scripting grep and display lines from a file Post 302347394 by aster007 on Tuesday 25th of August 2009 02:18:05 PM
Old 08-25-2009
var=`grep -n "Test successful" <filename> | cut -f1 -d ":"`

for i in $var
do
head -$i <filename> | tail -2
done
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

display few lines of the file

Hi, If I want to have a look at few lines of the file, how do I, what command to use. Eg: If I have a file having length 2000 lines and I want to have a look at the content between 1400 and 1600, How do I look at it ? Also, If I want to have a look at function alone in a file, how do I go... (4 Replies)
Discussion started by: sharuvman
4 Replies

2. Shell Programming and Scripting

Display file without # lines

Hi to all in this great forum, im sure this has been asked lots of times before but ive been looking for the past day and cant find the answer. I use cat/some/file to display its contents but how can i get it to not display hashed out lines, or do i need another command, Thanks in advance:) (5 Replies)
Discussion started by: dave123
5 Replies

3. UNIX for Dummies Questions & Answers

Grep and display n lines after the match is found.

Hello, How do I use grep to find a pattern in a list of file and then display 5 lines after the pattern is matched Eg: I want to match the string GetPresentCode in all files in a folder and then see 4 lines following this match. I am not sure if grep is what should be used to achieve. Thanks!... (3 Replies)
Discussion started by: cv_pan
3 Replies

4. Solaris

grep and display few lines before and after

Hi is there a way in grep to display few lines before and after the pattern?? I tried options A and B and after-context and before-context. But they don't work on Solaris platform. please advise. (13 Replies)
Discussion started by: melanie_pfefer
13 Replies

5. UNIX for Dummies Questions & Answers

Using grep and zgrep then display the next few lines

Hello everyone. I would like to know if I can use grep or zgrep to search for a particular pattern then print the x number of lines after the pattern was found. Lets say for example a pattern was found on line 3, I wanted the output to show lines 3, 4 and 5. Thanks! (10 Replies)
Discussion started by: khestoi
10 Replies

6. Shell Programming and Scripting

Grep word after last occurance of string and display next few lines

Hi, I wanted to grep string "ERROR" and "WORNING" after last occurrence of String "Starting" only and wanted to display two lines after searched ERROR and WORNING string and one line before. I have following cronjob log file "errorlog" file and I have written the code for same in Unix as below... (17 Replies)
Discussion started by: nes
17 Replies

7. Shell Programming and Scripting

Grep multiple exact match, do not display lines

Hi, Need help to grep the following from a file x. I just want to grep exact match not lines and not partial word. CONFSUCCESS CONFFAIL CONFPARTIALSUCCESS >cat x xczxczxczc zczczcxx CONFSUCCESS czczczcczc czxxczxzxczcczc CONFFAIL xczxczcxcczczc zczczczcz CONFPARTIALSUCCESS czczxcxzc ... (4 Replies)
Discussion started by: rajeshwebspere
4 Replies

8. Shell Programming and Scripting

Grep pattern and display all lines below

Hi I need to grep for a patter and display all lines below the pattern. For ex: say my file has the below lines file1 file2 file3 file4 file5 I NEED to grep for patter file3 and display all lines below the pattern. do we have an option to get this data. Let me know if you require... (5 Replies)
Discussion started by: venkidhadha
5 Replies

9. Shell Programming and Scripting

Grep and display multiple lines

Hi guys, I have a log file that generates multiple logs about a query. <query time='2016-04-13 13:01:50.825'> <PagingRequestHandler> <Before>brand:vmu</Before> <After>brand:vmu</After> </PagingRequestHandler> <GroupDeviceFilterHandler> <Before>brand:vmu</Before> ... (3 Replies)
Discussion started by: Junaid Subhani
3 Replies

10. Shell Programming and Scripting

Display lines for a particular year in a file using grep

hi, I have a log file with data for more than 3 years, i want only the rows for the year 2017, say for example. My file has the data like this 08-OCT-2015 11:17:35 AAA, BBBB 08-OCT-2017 11:17:35 AAA,Bdfdfd,dfdfd,dfd 08-Nov-2017 11:17:35 AAA,Bdfdfd,dfdfd,deree i want the rows... (2 Replies)
Discussion started by: skoshekay
2 Replies
Taint(3pm)						User Contributed Perl Documentation						Taint(3pm)

NAME
Test::Taint - Tools to test taintedness VERSION
Version 1.04 $Header: /home/cvs/test-taint/Taint.pm,v 1.16 2004/08/10 03:06:57 andy Exp $ SYNOPSIS
taint_checking_ok(); # We have to have taint checking on my $id = "deadbeef"; # Dummy session ID taint( $id ); # Simulate it coming in from the web tainted_ok( $id ); $id = validate_id( $id ); # Your routine to check the $id untainted_ok( $id ); # Did it come back clean? ok( defined $id ); DESCRIPTION
Tainted data is data that comes from an unsafe source, such as the command line, or, in the case of web apps, any GET or POST transactions. Read the perlsec man page for details on why tainted data is bad, and how to untaint the data. When you're writing unit tests for code that deals with tainted data, you'll want to have a way to provide tainted data for your routines to handle, and easy ways to check and report on the taintedness of your data, in standard Test::More style. "Test::More"-style Functions All the "xxx_ok()" functions work like standard "Test::More"-style functions, where the last parm is an optional message, it outputs ok or not ok, and returns a boolean telling if the test passed. taint_checking_ok( [$message] ) Test::More-style test that taint checking is on. This should probably be the first thing in any *.t file that deals with taintedness. tainted_ok( $var [, $message ] ) Checks that $var is tainted. tainted_ok( $ENV{FOO} ); untainted_ok( $var [, $message ] ) Checks that $var is not tainted. my $foo = my_validate( $ENV{FOO} ); untainted_ok( $foo ); tainted_ok_deeply( $var [, $message ] ) Checks that $var is tainted. If $var is a reference, it recursively checks every variable to make sure they are all tainted. tainted_ok_deeply( \%ENV ); untainted_ok_deeply( $var [, $message ] ) Checks that $var is not tainted. If $var is a reference, it recursively checks every variable to make sure they are all not tainted. my %env = my_validate( \%ENV ); untainted_ok_deeply( \%env ); Helper Functions These are all helper functions. Most are wrapped by an "xxx_ok()" counterpart, except for "taint" which actually does something, instead of just reporting it. taint_checking() Returns true if taint checking is enabled via the -T flag. tainted( $var ) Returns boolean saying if $var is tainted. tainted_deeply( $var ) Returns boolean saying if $var is tainted. If $var is a reference it recursively checks every variable to make sure they are all tainted. taint( @list ) Marks each (apparently) taintable argument in @list as being tainted. References can be tainted like any other scalar, but it doesn't make sense to, so they will not be tainted by this function. Some "tie"d and magical variables may fail to be tainted by this routine, try as it may.) taint_deeply( @list ) Similar to "taint", except that if any elements in @list are references, it walks deeply into the data structure and marks each taintable argument as being tainted. If any variables are "tie"d this will taint all the scalars within the tied object. AUTHOR
Written by Andy Lester, "<andy@petdance.com>". COPYRIGHT
Copyright 2004, Andy Lester, All Rights Reserved. You may use, modify, and distribute this package under the same terms as Perl itself. perl v5.14.2 2004-08-10 Taint(3pm)
All times are GMT -4. The time now is 10:55 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy