Sponsored Content
Full Discussion: Remove lines
Top Forums UNIX for Dummies Questions & Answers Remove lines Post 302953758 by anbu23 on Tuesday 1st of September 2015 05:45:33 AM
Old 09-01-2015
Code:
$ awk -F"|" ' ! arr[$1]++ ' OFS="|" file
6281271467892|2015-01-07
5555571618533|2015-01-01
5555571800645|2015-01-12
5555567476389|2015-01-04
5555567972749|2015-01-12
5555583587323|2015-01-15

Code:
$ sort -t'|' -kn1 -k2r file | awk -F"|" ' ! arr[$1]++ ' OFS="|"
5555567476389|2015-01-04
5555567972749|2015-01-12
5555571618533|2015-01-02
5555571800645|2015-01-12
5555583587323|2015-01-15
6281271467892|2015-01-07

 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Need to remove lines

Hi All, I have a xml file . And I need to remove the header inofrmation and the tralier information from the xml file. I have pasted the sample xml below: <?xml version="1.0" encoding="UTF-8" ?> - <!-- Generated by Ascential Software Corporation, DataStage - XMLOutput stage - Mon Nov... (5 Replies)
Discussion started by: kumar66
5 Replies

2. Shell Programming and Scripting

Remove All Lines Between Two Unique Lines

Hi all! Im wondering if its possible to remove all lines between two lines. Im working with a document like this: data1 data2 <Remove> data3 data4 </Remove> data5 data6 I need it to end up like this if that possible: data1 data2 data5 data6 There are multiple instances of... (2 Replies)
Discussion started by: Grizzly
2 Replies

3. Shell Programming and Scripting

Remove lines

i want to remove the records starting with abc or xyz in the file without redirecting the original file. sample : file1.txt abc1234 124234 2020202 3242342 xyz2342 2afafa Expecting output 124234 2020202 3242342 2afafa (7 Replies)
Discussion started by: Jairaj
7 Replies

4. Shell Programming and Scripting

Remove all lines except lines starting with [

Hello, I am trying to remove all the lines in file except lines starting with [ How can i accomplish this? Thank you very much in advance. (4 Replies)
Discussion started by: maxo
4 Replies

5. Shell Programming and Scripting

remove blank lines and merge lines in shell

Hi, I'm not a expert in shell programming, so i've come here to take help from u gurus. I'm trying to tailor a csv file that i got to make it work for the LOAD FROM command. I've a datatable csv of the below format - --in file format xx,xx,xx ,xx , , , , ,,xx, xxxx,, ,, xxx,... (11 Replies)
Discussion started by: dvah
11 Replies

6. Shell Programming and Scripting

Remove x lines form top and y lines form bottom using AWK?

How to remove x lines form top and y lines form bottom. This works, but like awk only cat file | head -n-y | awk 'NR>(x-1)' so remove last 3 lines and 5 firstcat file | head -n-3 | awk 'NR>4' (5 Replies)
Discussion started by: Jotne
5 Replies

7. UNIX for Dummies Questions & Answers

Want to remove all lines but not latest 50 lines from a file

Hi, I have a huge file which has Lacs of lines. File system got full. I want your guys help to suggest me a solution so that I can remove all lines from that file but not last 50,000 lines. I want solution which can remove lines from existing file so that I can have some space left with. (28 Replies)
Discussion started by: prashant2507198
28 Replies

8. Shell Programming and Scripting

Two files, remove lines from second based on lines in first

I have two files, a keepout.txt and a database.csv. They're unsorted, but could be sorted. keepout: user1 buser3 anuser19 notheruser27 database: user1,2343,"information about",field,blah,34 user2,4231,"mo info",etc,stuff,43 notheruser27,4344,"hiya",thing,more thing,423... (4 Replies)
Discussion started by: esoffron
4 Replies

9. Shell Programming and Scripting

Remove lines that are subsets of other lines in File

Hello everyone, Although it seems easy, I've been stuck with this problem for a moment now and I can't figure out a way to get it done. My problem is the following: I have a file where each line is a sequence of IP addresses, example : 10.0.0.1 10.0.0.2 10.0.0.5 10.0.0.1 10.0.0.2... (5 Replies)
Discussion started by: MisterJellyBean
5 Replies

10. Shell Programming and Scripting

awk to remove lines that do not start with digit and combine line or lines

I have been searching and trying to come up with an awk that will perform the following on a converted text file (original is a pdf). 1. Since the first two lines are (begin with) text they are removed 2. if $1 is a number then all text is merged (combined) into one line until the next... (3 Replies)
Discussion started by: cmccabe
3 Replies
PR(1)							      General Commands Manual							     PR(1)

NAME
pr - print file SYNOPSIS
pr [ option ... ] [ file ... ] DESCRIPTION
Pr produces a printed listing of one or more files on its standard output. The output is separated into pages headed by a date, the name of the file or a specified header, and the page number. With no file arguments, pr prints its standard input. Options apply to all following files but may be reset between files: -n Produce n-column output. +n Begin printing with page n. -b Balance columns on last page, in case of multi-column output. -d Double space. -en Set the tab stops for input text every n spaces. -h Take the next argument as a page header (file by default). -in Replace sequences of blanks in the output by tabs, using tab stops set every n spaces. -f Use formfeeds to separate pages. -ln Take the length of the page to be n lines instead of the default 66. -m Print all files simultaneously, each in one column. -n Number the lines of each file. -on Offset the left margin n character positions. -sc Separate columns by the single character c instead of aligning them with white space. A missing c is taken to be a tab. -t Do not print the 5-line header or the 5-line trailer normally supplied for each page. -wn For multi-column output, take the width of the page to be n characters instead of the default 72. SOURCE
/sys/src/cmd/pr.c SEE ALSO
cat(1), lp(1) PR(1)
All times are GMT -4. The time now is 10:07 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy