I am a new to Linux and try to write a script to join three multiple files.
For example, there are three files
file1
# comment
a Kevin
b Vin
c Sam
file 2
# comment
a 10
b 20
c 40
file 3
# comment
a blue
b yellow (7 Replies)
Hi,
I have a big file of 50GB size. I need copy it to a second ftp from a ftp. I am not able to do the full 50GB transfer as it timesout after some time. SO i am trying to split the file into 5gb each 10 files with the below command.
split -b 5368709120 pack.tar.gz backup.gz
After I... (2 Replies)
Hello,
My apologies if this has been posted elsewhere, I have had a look at several threads but I am still confused how to use these functions. I have two files, each with 5 columns:
File A: (tab-delimited)
PDB CHAIN Start End Fragment
1avq A 171 176 awyfan
1avq A 172 177 wyfany
1c7k A 2 7... (3 Replies)
I am trying to join a few hundred files using join. Is there a way to use while read or something else to automate this. My problem is the following.
Day 1
City Temp
ABC 20
DEF 30
HIJ 15
Day 2
City Temp
ABC 22
DEF 29
KLM 5
Day 3 (3 Replies)
Hi all,
I searched through the forum but i can't manage to find a solution. I need to join a set of files placed in a directory (~1600) by column, and obtain an output with first and second column common to each file, but following columns are taken from the file in the list (precisely the fourth... (10 Replies)
Hi,
I have 20 tab delimited text files that have a common column (column 1). The files are named GSM1.txt through GSM20.txt. Each file has 3 columns (2 other columns in addition to the first common column).
I want to write a script to join the files by the first common column so that in the... (5 Replies)
Hi there,
I am trying to join 24 files (i showed example of 3 files below). They all have 2 columns. The first columns is common to all. The files are tab delimited eg
file 1
rs0001 100e-34
rs0003 2.8e-01
rs008 1.9e-90
file 2
rs0001 1.98e-22
rs0004 3.77e-10... (4 Replies)
Hello all,
I want to join 2 tabbed files on the first 2 fields, and filling the missing values with 0. The 3rd column in each file is constant for the entire file.
file1
12658699 ST5 XX2720 0 1 0 1
53039541 ST5 XX2720 1 0 1.5 1
file2 ... (6 Replies)
Dear All,
I have many files formatted like this:
file1.txt:
1/2-SBSRNA4 18
A1BG 3
A1BG-AS1 6
A1CF 0
A2LD1 1
A2M 1160
file2.txt
1/2-SBSRNA4 53
A1BG 1
A1BG-AS1 7
A1CF 0
A2LD1 3
A2M 2780 (5 Replies)
Discussion started by: paolo.kunder
5 Replies
LEARN ABOUT V7
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 specifed 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.
JOIN(1)