Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: sed/awk: Delete matching words leaving only the first instance
Top Forums Shell Programming and Scripting sed/awk: Delete matching words leaving only the first instance Post 302388164 by GrinningArmor on Tuesday 19th of January 2010 03:14:40 PM
Old 01-19-2010
Question sed/awk: Delete matching words leaving only the first instance
I have an input text that looks like this (comes already sorted):
Code:
on Caturday 22 at 10:15, some event
on Caturday 22 at 10:15, some other event
on Caturday 22 at 21:30, even more events
on Funday 23 at 11:00, yet another event

I need to delete all the matching words between the lines, from the start of each line, leaving only the first instance of each date.
To clarify, i need to turn it into something like this:
Code:
on Caturday 22 at 10:15, some event
                         some other event
               at 21:30, even more events
on Funday 23 at 11:00, yet another event

So then I could format it like this to make it shorter, which is what I'm after:
Code:
on Caturday 22 at 10:15, some event; some other event; at 21:30, even more events
on Funday 23 at 11:00, yet another event

Is there a way to do something like this with sed and awk?
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

sed option to delete two words within a file

Could someone please help me with the following. I'm trying to figure out how to delete two words within a specific file using sed. The two words are directory and named. I have tried the following: sed '//d' sedfile sed '//d' sedfile both of these options do not work..... ... (4 Replies)
Discussion started by: klannon
4 Replies

2. UNIX for Dummies Questions & Answers

sed [delete everything between two words]

Hi, I have the following codes below that aims to delete every words between two pattern word. Say I have the files To delete every word between WISH_LIST=" and " I used the below codes (but its not working): #!/bin/sh sed ' /WISH_LIST=\"/ { N /\n.*\"/ {... (3 Replies)
Discussion started by: Orbix
3 Replies

3. Shell Programming and Scripting

sed find matching pattern delete next line

trying to use sed in finding a matching pattern in a file then deleting the next line only .. pattern --> <ad-content> I tried this but it results are not what I wish sed '/<ad-content>/{N;d;}' akv.xml > akv5.xml ex, <Celebrant2First>Mickey</Celebrant2First> <ad-content> Minnie... (2 Replies)
Discussion started by: aveitas
2 Replies

4. Shell Programming and Scripting

SED: delete matching row and 4 next rows?

Hi, Tried to look for solution, and found something similar but could not adapt the solution for my needs.. I'm trying to match a pattern (in this case "ProcessType")in a logfile, then delete that line and the 4 following lines. The logfile looks as follows: ProcessType: PROCESS_A... (5 Replies)
Discussion started by: Juha
5 Replies

5. UNIX for Dummies Questions & Answers

sed how to delete between two words within a file

I'm hoping someone could help me out please :) I have several .txt files with several hundred lines in each that look like this: 10241;</td><td>10241</td><td class="b">x2801;</td><td>2801</td><td>TEXT-1</td></tr> 10242;</td><td>10242</td><td... (4 Replies)
Discussion started by: martinsmith
4 Replies

6. UNIX for Dummies Questions & Answers

Delete all rows but leaving first and last ones

Hello, Merry Christmas to all! I wish you the best for these holidays and the best for the next year 2011. I'd like your help please, I need to delete all the rows in the third column of my file, but without touching nor changing the first and last value position, this is an example of my... (2 Replies)
Discussion started by: Gery
2 Replies

7. Shell Programming and Scripting

Using Sed to Delete Words in a File

This is a Nagios situation. So i have a list of servers in one file called Servers.txt And in another file called hostgroups.cfg, i want to remove each and every one of the servers in the Servers.txt file. The problem is, the script I wrote is having a problem removing the exact servers in... (5 Replies)
Discussion started by: SkySmart
5 Replies

8. Shell Programming and Scripting

SED - delete words between two possible words

Hi all, I want to make an script using sed that removes everything between 'begin' (including the line that has it) and 'end1' or 'end2', not removing this line. Let me paste an 2 examples: anything before any string begin few lines of content end1 anything after anything before any... (4 Replies)
Discussion started by: meuser
4 Replies

9. Shell Programming and Scripting

sed or awk delete character in the lines before and after the matching line

Sample file: This is line one, this is another line, this is the PRIMARY INDEX line l ; This is another line The command should find the line with “PRIMARY INDEX” and remove the last character from the line preceding it (in this case , comma) and remove the first character from the line... (5 Replies)
Discussion started by: KC_Rules
5 Replies

10. Shell Programming and Scripting

Seemingly simple sed, delete between matching lines

There are many matching blocks of text in one file that need to be deleted. This example below is one block that needs to be either deleted or replaced with an empty line. This text below is the input file. The ouput file should be empty Searching Checks. Based on search criteria name: Value :... (2 Replies)
Discussion started by: bash_in_my_head
2 Replies

LEARN ABOUT HPUX

fmt

fmt(1)							      General Commands Manual							    fmt(1)

NAME

       fmt - format text

SYNOPSIS

       width] [file...]

DESCRIPTION

       The  command is a simple text formatter that fills and joins lines to produce output lines of (up to) the number of characters specified in
       the width option.  The default width is 72.  concatenates the arguments.  If none are given, formats text from the standard input.

       Blank lines are preserved in the output, as is the spacing between words.  does not fill lines beginning with a	period	for  compatibility
       with Nor does it fill lines starting with

       Indentation is preserved in the output and input lines with differing indentation are not joined (unless is used).

       can also be used as an in-line text filter for the command:

       reformats the text between the cursor location and the end of the paragraph.

   Options
       recognizes the following options:

	      Crown margin mode.
		    Preserve the indentation of the first two lines within a paragraph and align the left margin of each subsequent line with that
		    of the second line.  This is useful for tagged paragraphs.

	      Split lines only.
		    Do not join short lines to form longer ones.  This prevents sample lines of code, and other such "formatted" text, from  being
		    unduly combined.

	      Fill output lines to up to
		    width columns.

WARNINGS

       The width option is acceptable for BSD compatibility, but it may go away in future releases.

SEE ALSO

       nroff(1), vi(1).

																	    fmt(1)
All times are GMT -4. The time now is 04:52 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy