Hi
I have a file having 1000 rows. Now I would like to remove 10 rows from it. Plz give me the script.
Eg:
input file like
4 1 4500.0 1
5 1 1.0 30
6 1 1.0 4500
7 1 4.0 730
7 2 500000.0 730
8 1 785460.0 45
8 7 94255.0 30
9 1 31800.0 30
9 4 36000.0 30
10 1 15000.0 30... (5 Replies)
Hello,
I am supposed to process about 100 csv files. But these files have some extra lines at the bottom of the file. these extra lines start with a header for each column and then some values below. These lines are actually a summary of the actual data and not supposed to be processed. These... (8 Replies)
I need to delete rows based on the number of lines in a different file, I have a piece of code with me working but when I merge with my C application, it doesnt work.
sed '1,'\"`wc -l < /tmp/fileyyyy`\"'d' /tmp/fileA > /tmp/filexxxx
Can anyone give me an alternate solution for the above (2 Replies)
I have CSV file that contains data in the format as shown below:
ABC, 67, 56, 67, 78, 89, 76, 55
PDR, 85, 83, 83, 72, 82, 89, 83
MPG, 86, 53, 54, 65, 23, 54, 75
..
..
..
..
I want to create a script that will pull out the rows from the above sheet and paste it into another CSV file.... (12 Replies)
Hi,
I need help to remove blank rows at the end of file.
Sample data:
"Oslo, Symra kino",Oslo,130-7,Symra 1,130-7-91
"Tønsberg, Brygga Kino SF",Tønsberg,202-1,Tønsberg SF 4,202-1-4
,,,,
,,,,
,,,,
,,,,
Expected data:
"Oslo, Symra kino",Oslo,130-7,Symra 1,130-7-91
"Tønsberg, Brygga... (6 Replies)
Hello list,
I am working on a csv file which contains two fields per record which contain IP addresses. What I am trying to do is find records which have identical fields(IP addresses) which occur 4(four) times, and if they do, delete all records with that specific identical field(ip address).
... (4 Replies)
Hi All,
I have many of files(.csv) of the format given below.
Date,Name,Location
04/02/2012,A,India
,B,China
,C,USA
Like this I have 1000's of rows and many columns in all my files.
I need a shell script to copy down the Date(in this example column1) to the next 2 rows below(in the... (8 Replies)
Hi,
I have a requirement to convert rows into columns. data looks like:
c1,c2,c3,..
r1,r2,r3,..
p1,p2,p3,..
and so on..
output shud be like this:
c1,r1,p1,..
c2,r2,p2,..
c3,r3,p3,..
Thanks in advance, (12 Replies)
Hello Everyone,
I am trying to find a way to take a .csv file with 7 columns and a ton of rows (over 600,000) and remove the entire row if the cell in forth column is blank.
Just to give you a little background on why I am doing this (just in case there is an easier way), I am pulling... (3 Replies)
How can i get the duplicates rows from a file using unix, for example i have data like
a,1
b,2
c,3
d,4
a,1
c,3
e,5
i want output to be like
a,1
c,3 (4 Replies)
Discussion started by: ggupta
4 Replies
LEARN ABOUT PLAN9
join
JOIN(1) General Commands Manual JOIN(1)NAME
join - relational database operator
SYNOPSIS
join [ options ] file1 file2
DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If one of the file names is the
standard input is used.
File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in
each line.
There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con-
sists of the common field, then the rest of the line from file1, then the rest of the line from file2.
Input fields are normally separated spaces or tabs; output fields by space. In this case, multiple separators count as one, and leading
separators are discarded.
The following options are recognized, with POSIX syntax.
-a n In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-v n Like -a, omitting output for paired lines.
-e s Replace empty output fields by string s.
-1 m
-2 m Join on the mth field of file1 or file2.
-jn m Archaic equivalent for -n m.
-ofields
Each output line comprises the designated fields. The comma-separated field designators are either 0, meaning the join field, or
have the form n.m, where n is a file number and m is a field number. Archaic usage allows separate arguments for field designators.
-tc Use character c as the only separator (tab character) on input and output. Every appearance of c in a line is significant.
EXAMPLES
sort /adm/users | join -t: -a 1 -e "" - bdays
Add birthdays to password information, leaving unknown birthdays empty. The layout of is given in users(6); bdays contains sorted
lines like
tr : ' ' </adm/users | sort -k 3 3 >temp
join -1 3 -2 3 -o 1.1,2.1 temp temp | awk '$1 < $2'
Print all pairs of users with identical userids.
SOURCE
/sys/src/cmd/join.c
SEE ALSO sort(1), comm(1), awk(1)BUGS
With default field separation, the collating sequence is that of sort -b -ky,y; with -t, the sequence is that of sort -tx -ky,y.
One of the files must be randomly accessible.
JOIN(1)