Hi,
I have a file which contains more than 1 lakh records like following:
a. name, id, city, state, country, phone (Expected I/P file format)
name, id, city,, state, country, phone (Current I/P file format )
I want to achieve following tasks,
a, Remove the extra comma in the... (1 Reply)
Hi,
I have two comma separated files. I would like to see field 1 value of File1 exact match in field 2 of File2. If the value matches, then it should print matched lines from File2. I have achieved the results using cut, paste and egrep -f but I would like to use awk as it is efficient way and... (7 Replies)
Hi,
I am trying to locate the occurences of certain pattern like 'Possible network disconnect' in a text file. I can get the actual lines matching the pttern using:
grep -w 'Possible network disconnect' file_name.
But I am more interested in getting the timing of these events which are... (7 Replies)
:wall:
I am trying to do the following using awk (is that the best way?):
Read 2 files created from the output of df (say, on different days) and compare the entries using the 1st (FileSys) and 6th (Mount) fields to see if the size has changed. Output (at least), to a new file (some header... (2 Replies)
Hi All,
I'm looking to use AWK to pattern match lines in XML file - Example patten for below sample would be /^<apple>/
The sample I wrote out is very basic compared to what I am actually working with but it will get me started
I would like to keep the matched line(s) unchanged but have them... (4 Replies)
I am trying to combine all matching lines in the tab-delimited using awk. The below runs but no output results. Thank you :).
input
chrX 110925349 110925532 ALG13
chrX 110925349 110925532 ALG13
chrX 110925349 110925532 ALG13
chrX 47433390 47433999 SYN1... (3 Replies)
In the awk below which does execute I get output that is close, except for all the lines that start with a # are removed. Some lines have one others two or three and after the script adds the
ID= to the fields below the pattern in the awk, I can not seem to add the # lines back to the output. ... (5 Replies)
The awk below executes and is close (producing the first 4 columns in desired). However, when I add the sum of $7, I get nothing returned. Basically, I am trying to combine all the matching $4 in f1 and output them with the average of $7 in each match. Thank you :).
f1
... (2 Replies)
Discussion started by: cmccabe
2 Replies
LEARN ABOUT DEBIAN
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 /etc/passwd | join -t: -1 1 -a 1 -e "" - bdays
Add birthdays to the /etc/passwd file, leaving unknown birthdays empty. The layout of /adm/users is given in passwd(5); bdays con-
tains sorted lines like
tr : ' ' </etc/passwd | 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
/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)