I must be missing something very basic here. If the input file has tab separated fields (as stated in post #1 in this thread), then why is any pipeline needed here? Why not just use:
Note that the $(printf '\t') in the above can be replaced by a single literal <tab> character.
This will produce at least one line of output that is not in the output you say you want, which is the line in your sample input file:
which has empty fields for both field #5 and field #12. Since this is a unique value for that pair of fields, it seems to meet your criteria and should be displayed, shouldn't it?
This is untested since the sample input file provided did not contain any <tab>s and I wasn't sure which <space>s should be replaced by <tab>s.
Hello,
I am trying to use AWK to print only the first field of numerous text files, and then overwrite these files. They are of the format 1*2,3,4,5. I have tried the following code (using tcsh):
foreach f (file1 file2 file3)
cat $f | awk -F'*' '{print $1}' > $f
end
However, I get very... (4 Replies)
I am new to unix and have pieced together two scripts that work independently.
The first checks all the filesystems and reports which are running low on space.
df -m | awk 'int($4) > 75 {
print $1 " has only " $3 "mb free from a total of " $2 ", this filesystem is
" $4 " full! \n"
}... (1 Reply)
Hey,
I know this is a stupid question, but it doesn't work.
I have a file with 10 lines and I want to pipe the content to awk and then print line 1 til 2 into another file and then line 3-4 ...
So my script looks like that, but doesn't work:
cat grid_ill.pts | awk '{
for (NR=1;NR<3;NR++)... (8 Replies)
I have two files which I would like to compare and then manipulate in a way.
File1:
pictures.txt 1.1 1.3
dance.txt 1.2 1.4
treehouse.txt 1.3 1.5
File2:
pictures.txt 1.5 ref2313 1.4 ref2345 1.3 ref5432 1.2 ref4244
dance.txt 1.6 ref2342 1.5 ref2352 1.4 ref0695 1.3 ref5738 1.2... (1 Reply)
Hello,
I was wondering if it is possible to do a loop on letters rather than numbers with awk (gawk).
Basically I used to do:
echo "nothing" | gawk '{for(i=1;i<11;i++)print i}'
But I would like to do something like that (which obviously does not work):
echo "nothing" | gawk '{for(i in... (6 Replies)
Hi, everyone!
I have a file, when I print its $1 out it show several strings like this:
AABBCC
AEFJKLFG
FALEF
FAIWEHF
What I want to do is that, after output of each record, search the string in all files in the same folder, print out the record and file name.
This is what I want... (4 Replies)
Hi All,
I am new to AWK programming. I have the following for loop in my awk program.
cat printhtml.awk:
BEGIN
-------- <some code here>
END{
----------<some code here>
for(N=0; N<H; N++)
{
for(M=5; M<D; M++) print "\t" D "";
}
-----
}
... (2 Replies)
Hello, I currently have managed to get an awk function working inside a for loop that allows me to combine two files based on their headings but what I have not been able to do is print the output to files with variable names.
awk '
NR==FNR {a=$0; next}
/^>/ {$0 = $0" "a;}
... (2 Replies)
Hi
My Requirement is to take the sum of each column
below is the input file.
1 2 3 4
1 2 3 4
1 2 3 4
Initial i was using below command to achieve my desired result. however this was adding the row and not column.
i am not able understand why this is happening
awk... (1 Reply)
Discussion started by: scriptor
1 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)