I am a beginner in Unix. Though have been asked to write a script to filter(remove duplicates) data from a .dat file. File is very huge containig billions of records.
contents of file looks like
30002157,40342424,OTC,mart_rec,100, ,0
30002157,40343369,OTC,mart_rec,95, ,0... (6 Replies)
Hi, I've got a file that I'd like to uniquely sort based on column 2 (values in column 2 begin with "comp").
I tried sort -t -nuk2,3 file.txtBut got:
sort: multi-character tab `-nuk2,3'
"man sort" did not help me out
Any pointers?
Input:
Output: (5 Replies)
Hello experts,
I have a requirement where I have to implement two checks on a csv file:
1. Check to see if the value in first column is duplicate, if any value is duplicate script should exit.
2. Check to verify if the value at second column is between "yes" or "no", if it is anything else... (4 Replies)
I have a .CSV file with the below format:
"column 1","column 2","column 3","column 4","column 5","column 6","column 7","column 8","column 9","column 10
"12310","42324564756","a simple string with a , comma","string with or, without commas","string 1","USD","12","70%","08/01/2013",""... (2 Replies)
Input
1,ABCD,no
2,system,yes
3,ABCD,yes
4,XYZ,no
5,XYZ,yes
6,pc,noCode used to find duplicate with regard to 2nd column
awk 'NR == 1 {p=$2; next} p == $2 { print "Line" NR "$2 is duplicated"} {p=$2}' FS="," ./input.csv
Now is there a wise way to de-duplicate the entire line (remove... (4 Replies)
Hi Gurus,
I have a file(weblog) as below
abc|xyz|123|agentcode=sample code abcdeeess,agentcode=sample code abcdeeess,agentcode=sample code abcdeeess|agentadd=abcd stereet 23343,agentadd=abcd stereet 23343
sss|wwq|999|agentcode=sample1 code wqwdeeess,gentcode=sample1 code... (4 Replies)
Dear folks
I have a map file of around 54K lines and some of the values in the second column have the same value and I want to find them and delete all of the same values. I looked over duplicate commands but my case is not to keep one of the duplicate values. I want to remove all of the same... (4 Replies)
I have csv file with 30, 40 columns
Pasting just three column for problem description
I want to filter record if column 1 matches CN or DN then,
check for values in column 2 if column contain 1235, 1235 then in column 3 values must be sequence of 2345, 2345
and if column 2 contains 6789, 6789... (5 Replies)
Hi Experts,
I have csv file with 30, 40 columns
Pasting just 2 column for problem description.
Need to print error if below combination is not present in file
check for column-1 (DocumentNumber) and filter columns where value in DocumentNumber field is same.
For all such rows, the field... (7 Replies)
Discussion started by: as7951
7 Replies
LEARN ABOUT PLAN9
pr
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)