Sponsored Content
Top Forums Shell Programming and Scripting Need 10 lines before the first occurance of a pattern Post 302399023 by ungalnanban on Friday 26th of February 2010 05:25:13 AM
Old 02-26-2010
MySQL

see the following grep command.
Code:
grep --max-count 1 -B 10 'check' input  | grep -v 'check'

Output:
Code:
5This is a text file
6this is a text file
7This is a text file
8this is a text file
9This is a text file
10this is a text file
11This is a text file
12this is a text file
13This is a text file
14this is a text file

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Count of matched pattern occurance

In a file a pattern is occured many times randomly. Even it may appear more then once in the same line too. How i can get the number of times that pattern appeared in the file? let the file name is abc.txt and the pattern is "xyz". I used the following code: grep -ic "xyz" abc.txt but it is... (3 Replies)
Discussion started by: palash2k
3 Replies

2. Shell Programming and Scripting

Finding Last occurance of another pattern when a pattern is found.

Hi, I have two files viz, rak1: $ cat rak1 rak2: $ cat rak2 sdiff rak1 rak2 returns: I want the lines that got modified, changed, or deleted preceding with the section they are in. I have done this so far: (1 Reply)
Discussion started by: rakeshou
1 Replies

3. Shell Programming and Scripting

How to find files which has more than one occurance of pattern

Hello Everyone, Please help me in finding out the solution. The problem is .. lets say i have 600 files in a directory. All 600 files are shell script files. Now i need to find out the files which contains a pattern "SHELL" more than once. No matter how the pattern occurs , it can be in... (10 Replies)
Discussion started by: Prahlad
10 Replies

4. UNIX for Dummies Questions & Answers

Replace first 5 occurance of a pattern

There is scenario that i have to replace a pattern at the first 5 occurance in a file. say i need to replace 'abc' by 'xyz' at its first 5 occurance in a file a.txt, can anybody help me how it can be done, i can do complete replacement of the pattern using sed throughtout the file. (1 Reply)
Discussion started by: palash2k
1 Replies

5. Shell Programming and Scripting

How can I match lines with just one occurance of a string in awk?

Hi, I'm trying to match records using awk which contain only one occurance of my string, I know how to match one or more (+) but matching only one is eluding me without developing some convoluted bit of code. I was hoping there would be some simple pattern matching thing similar to '+' but... (9 Replies)
Discussion started by: jonathanm
9 Replies

6. Shell Programming and Scripting

Pattern matching first occurance only wanted

I have the following code: declare -a search search=(name label elapsed totalfilecount totalfilebytes starttime exitcode errors warnings fatals) for (( i = 0 ; i < ${#search} ; i++ )) do data=`awk -F '^'${search}'=\"' 'BEGIN{RS="\" "; OFS="\n"; ORS=""} { print $2 }' summary.alg` ... (1 Reply)
Discussion started by: Ikon
1 Replies

7. Shell Programming and Scripting

sed pattern to delete lines containing a pattern, except the first occurance

Hello sed gurus. I am using ksh on Sun and have a file created by concatenating several other files. All files contain header rows. I just need to keep the first occurrence and remove all other header rows. header for file 1111 2222 3333 header for file 1111 2222 3333 header for file... (8 Replies)
Discussion started by: gary_w
8 Replies

8. Shell Programming and Scripting

Search for a pattern in a String file and count the occurance of each pattern

I am trying to search a file for a patterns ERR- in a file and return a count for each of the error reported Input file is a free flowing file without any format example of output ERR-00001=5 .... ERR-01010=10 ..... ERR-99999=10 (4 Replies)
Discussion started by: swayam123
4 Replies

9. 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

10. Shell Programming and Scripting

ksh sed - Extract specific lines with mulitple occurance of interesting lines

Data file example I look for primary and * to isolate the interesting slot number. slot=`sed '/^primary$/,/\*/!d' filename | tail -1 | sed s'/*//' | awk '{print $1" "$2}'` Now I want to get the Touch line for only the associate slot number, in this case, because the asterisk... (2 Replies)
Discussion started by: popeye
2 Replies
URLCODING(3)						 libbash urlcoding Library Manual					      URLCODING(3)

NAME
urlcoding -- a Libbash library for encoding and decoding URL's. SYNOPSIS
urlEncodeString [-l] <STRING> urlEncodeFile [-l] <FILE> urlEncodeStream [-l] urlDecodeString <STRING> urlDecodeFile <FILENAME> urlDecodeStream DESCRIPTION
urlcoding is a collection of functions that convert ASCII-text to standard URL's and vice-versa. The AWK code used is based on code by Heiner Steven <heiner.steven@odn.de> The function list: urlEncodeString Creates a URL from an ASCII string urlEncodeFile Converts a file into URL-valid text urlEncodeStream Converts standard input into URL-valid text urlDecodeString Converts a URL-encoded text back to a plain-text form urlDecodeFile Coverts URL-encoded text in a file back to plain text urlDecodeStream Converts URL-encoded standard input to text Detailed interface description follows. The [-l] option for the encoding functions should be used when line-feed characters (' ') are to be encoded as well. All functions print the results of their conversions to standard output. The exit status of all functions is that of the command 'awk', with '0' for success FUNCTIONS DESCRIPTIONS
urlEncodeString [-l] <STRING> Converts STRING - a string of ASCII characters - to URL. urlEncodeFile [-l] <FILE> Coverts FILE of URL-encoded text to plain text urlEncodeStream [-l] Converts text from standard input to URL-text. urlDecodeString <STRING> Converts URL-encoded string STRING back to text. urlDecodeFile <FILENAME> Converts the URL-encoded text in FILE to plain text. urlDecodeStream Converts the URL-encoded text from standard input to plain-text AUTHORS
Alon Keren <alon.keren@gmail.com> SEE ALSO
ldbash(1), libbash(1) Linux Epoch Linux
All times are GMT -4. The time now is 02:16 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy