Sponsored Content
Top Forums Shell Programming and Scripting Replace string in line below specific pattern? Post 302872787 by TECK on Sunday 10th of November 2013 04:00:12 AM
Old 11-10-2013
Replace string in line below specific pattern?

Hi,

I'm trying to replace a string with sed, in a text file containing this pattern:
Code:
location alpha
    value x
location beta
    value y
location gamma
    value y
location delta
    value y
location theta
    value z
...

What I want to achieve is:
Find location beta into text file and replace value y with value s. Note that beta, gamma and delta locations share the same value. I want to replace the value based on a specific location.

This is a short example, I have about 100 unique locations randomly displayed into file, with several of them having identical values.

Thank you.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

using sed to replace a specific string on a specific line number using variables

using sed to replace a specific string on a specific line number using variables this is where i am at grep -v WARNING output | grep -v spawn | grep -v Passphrase | grep -v Authentication | grep -v '/sbin/tfadmin netguard -C'| grep -v 'NETWORK>' >> output.clean grep -n Destination... (2 Replies)
Discussion started by: todd.cutting
2 Replies

2. Shell Programming and Scripting

Find and replace a string a specific value in specific location in AIX

Hi, I have following samp.txt file in unix. samp.txt 01Roy2D3M000000 02Rad2D3M222222 . . . . 10Mik0A2M343443 Desired Output 01Roy2A3M000000 02Rad2A3M222222 . . (5 Replies)
Discussion started by: techmoris
5 Replies

3. Shell Programming and Scripting

Help with replace line based on specific pattern match

Input file data20714 7327 7366 detail data20714 7327 7366 main data250821 56532 57634 detail data250821 57527 57634 main data250821 57359 57474 main data250821 57212 57301 main data250821 57140 57159 detail data250821 56834 57082 main data250821 56708 56779 main ... (3 Replies)
Discussion started by: perl_beginner
3 Replies

4. Shell Programming and Scripting

Replace specific field on specific line sed or awk

I'm trying to update a text file via sed/awk, after a lot of searching I still can't find a code snippet that I can get to work. Brief overview: I have user input a line to a variable, I then find a specific value in this line 10th field in this case. After asking for new input and doing some... (14 Replies)
Discussion started by: crownedzero
14 Replies

5. UNIX for Dummies Questions & Answers

How to Detect Specific Pattern and Print the Specific String after It?

I'm still beginner and maybe someone can help me. I have this input: the great warrior a, b, c and what i want to know is, with awk, how can i detect the string with 'warrior' string on it and print the a, b, and c seperately, become like this : Warrior Type a b c Im still very... (3 Replies)
Discussion started by: radynaraya
3 Replies

6. Shell Programming and Scripting

sed or awk command to replace a string pattern with another string based on position of this string

here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb cat dump.sql INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10... (10 Replies)
Discussion started by: vivek d r
10 Replies

7. Shell Programming and Scripting

Need help to replace a pattern on specific line in a data file

Hi, I want to replace specific pattern "-2.0000 2" by "1.0000 3" on a particular line (line #5) in a file 1.dat. I have about 50 more files similar to 1.dat in which I want to do this correction. Can you please suggest how can I make change only at this particular line of a file... (6 Replies)
Discussion started by: anuj06
6 Replies

8. Shell Programming and Scripting

sed command to replace a line at a specific line number with some other line

my requirement is, consider a file output cat output blah sdjfhjkd jsdfhjksdh sdfs 23423 sdfsdf sdf"sdfsdf"sdfsdf"""""dsf hellow there this doesnt look good et cetc etc etcetera i want to replace a line of line number 4 ("this doesnt look good") with some other line ... (3 Replies)
Discussion started by: vivek d r
3 Replies

9. Shell Programming and Scripting

Replace specific characters until pattern

Hi experts, My file looks something like this. abcXX4,7,234 abc,defg,45XX23,74,123 The number of commas left of the XX can vary. The question is how can I replace all the commas left of the 'XX' with an underscore? abcXX4,7,234 abc_defg_45XX23,74,123 Thanks! (5 Replies)
Discussion started by: abercrom
5 Replies

10. Shell Programming and Scripting

Replace the line with specific pattern

Hello All I'm trying to change one string from a file contening this patern: xxxx-xxxx 4 numbers - end 4 other numbers This is a sample of the file: LDR 00679 am a2200205 4500 =001 3617 =008 030219s2000\\\\xxx|||||\||||\00|\0\spa\d =020 \\$a0211-1942 =041 \\$aCastellà =093 ... (5 Replies)
Discussion started by: ldiaz2106
5 Replies
Tcl_StringMatch(3)					      Tcl Library Procedures						Tcl_StringMatch(3)

__________________________________________________________________________________________________________________________________________________

NAME
Tcl_StringMatch, Tcl_StringCaseMatch - test whether a string matches a pattern SYNOPSIS
#include <tcl.h> int Tcl_StringMatch(string, pattern) int Tcl_StringCaseMatch(string, pattern, nocase) ARGUMENTS
char *string (in) String to test. char *pattern (in) Pattern to match against string. May contain special characters from the set *?[]. int nocase (in) Specifies whether the match should be done case-sensitive (0) or case-insensitive (1). _________________________________________________________________ DESCRIPTION
This utility procedure determines whether a string matches a given pattern. If it does, then Tcl_StringMatch returns 1. Otherwise Tcl_StringMatch returns 0. The algorithm used for matching is the same algorithm used in the ``string match'' Tcl command and is similar to the algorithm used by the C-shell for file name matching; see the Tcl manual entry for details. | In Tcl_StringCaseMatch, the algorithm is the same, but you have the option to make the matching case-insensitive. If you choose this (by | passing nocase as 1), then the string and pattern are essentially matched in the lower case. KEYWORDS
match, pattern, string Tcl 8.1 Tcl_StringMatch(3)
All times are GMT -4. The time now is 08:55 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy