Try something like this:
The input file needs to grouped on field 1 for this to work. If that is not the case, it needs to be sorted first..
Closing the files is necessary, otherwise awk will have too many files open at once...
Last edited by Scrutinizer; 08-13-2016 at 02:57 AM..
These 2 Users Gave Thanks to Scrutinizer For This Post:
I have a log file from which I want to cut out the ten lines assoictiated to my search requirment (cust_ref #).
The cust_ref number will be on te first line and the update information will be on the following ten lines (which dosen't linking data to grep on).
Using a script I would like to... (4 Replies)
I want to capture contents of a file between 2 strings into another file
for eg all lines in between the keywords "start log" and "end log" should be copied into another file (1 Reply)
Hi all, i am doing a perl script to read from a db. I am able to retrieve the rows, but i am unable to return the number of rows selected. i tried
$selectedrows = $sth->numrows; i got the error msg:
Can't locate object method "numrows" via package "DBI::st"
i changed it to $selectedrows =... (7 Replies)
Hi everybody:
Could anybody tell me how I can print from a file a selected rows with awk. In my case I only want print in another file all the rows from NR=8 to NR=2459 and the increment each 8 times.
I tried to this:
awk '{for (i=8; i=2459; i+=8); NR==i}' file1 > file2
But doesn't... (6 Replies)
Hey guys
I have got a tab-separated file and I want to copy only selected records from two columns at a time satisfying specified condition, and create a new file.
My tab separated file is like this
ID score ID score ID Score ID score ID score
1_11 0.80 2_23 0.74 2.36 0.78 2_34 0.75
A_34... (9 Replies)
Greetings!
Can we automate the process of removing a newline char from selected rows in a fixed width file using a shell?
Input is like
abcd1234
xyzd1234
abcd
a1b2c3d4
abcd1234
xyzd1234
xx
abcd1234
Expected output -
abcd1234xyzd1234
abcda1b2c3d4abcd1234xyzd1234
xxabcd1234
... (2 Replies)
Hi,
I have two files Input1.txt and Input2.txt and i need to have a output with selected lines starting with the values present in Input2.txt.
For example:
Input1.txt:... (5 Replies)
Hi all,
I have a question for the Gurus. I apologize if this has bee shared before but I couldn't find the link.
I am trying to read parameters from an external parameter file. What I m trying to achieve is read selected lines from an external parameter file into the script. for eg my param... (4 Replies)
Hi I would like to move the first 1000 rows of my file into an output file and then move the last 1000 rows into another output file.
Any help would be great
Thanks (6 Replies)
Hello
I want to collapse a file with multiple rows into consolidated lines of entries based on selected columns as the 'key'.
Example:
1 2 3 Abc def ghi
1 2 3 jkl mno p qrts
6 9 0 mno def Abc
7 8 4 Abc mno mno abc
7 8 9 mno mno abc
7 8 9 mno j k
So if columns 1, 2 and 3 are... (6 Replies)
Discussion started by: linuxlearner123
6 Replies
LEARN ABOUT BSD
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 file1 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.
Fields are normally separated by blank, tab or newline. In this case, multiple separators count as one, and leading separators are dis-
carded.
These options are recognized:
-an In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-e s Replace empty output fields by string s.
-jn m Join on the mth field of file n. If n is missing, use the mth field in each file.
-o list
Each output line comprises the fields specified in list, each element of which has the form n.m, where n is a file number and m is a
field number.
-tc Use character c as a separator (tab character). Every appearance of c in a line is significant.
SEE ALSO sort(1), comm(1), awk(1)BUGS
With default field separation, the collating sequence is that of sort -b; with -t, the sequence is that of a plain sort.
The conventions of join, sort, comm, uniq, look and awk(1) are wildly incongruous.
7th Edition April 29, 1985 JOIN(1)