That will work on some systems, but the standards don't specify the precedence of file redirection operations and comparison operations. Some versions of awk parse the command:
as:
and others parse it as:
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)
My item was not answered on previous thread as code given did not work
I wanted to print records from file2 where comparing column 1 and 16 for both files find rows where column 16 in file 1 does not match column 16 in file 2
Here was CODE give to issue
~/unix.com$ cat f1... (0 Replies)
Hello,
I have two files file 1 and file 2 each having result of a query on certain database tables and need to compare for Col1 in file1 with Col3 in file2, compare Col2 with Col4 and output the value of Col1 from File1 which is a) not present in Col3 of File2 b) value of Col2 is different from... (2 Replies)
I am looking to move matching lines (01 - 07) from File1 and 77 tab the matching string from File2, to File3.txt. I am almost done but
- Currently, script is not printing lines to File3.txt in order.
Thanks a lot.
Any help is appreciated.
Script I am using:
awk 'FNR == NR && ! /^]*$/ {... (9 Replies)
Trying to use awk to match the contents of each line in file1 with $5 in file2. Both files are tab-delimited and there may be a space or special character in the name being matched in file2, for example in file1 the name is BRCA1 but in file2 the name is BRCA 1 or in file1 name is BCR but in file2... (6 Replies)
I am trying to modify and understand an awk written by @Scrutinizer
The below awk will filter a list of 30,000 lines in the tab-delimited file. What I am having trouble with is adding a condition to SVTYPE=CNV
that will only print that line if CI=,0.95: portion in blue in file is <1.9.
The... (2 Replies)
In the awk below I am trying to print only the header lines starting with # or ## and the lines that $7 is PASS and AF= is less than 5%. The awk does execute but returns an empty file and I am not sure what I am doing wrong. Thank you.
file
... (0 Replies)
I am trying to use awk to print lines that satisfy either of the two conditions below:
condition 1: $2 equals CNV and the split of $3, the value in red, is greater than or equal to 4. ---- this is a or so I think
condition 2: $2 equals CNV and the split of $3, the value in red --- this is a... (4 Replies)
Discussion started by: cmccabe
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)