awk works on theme of awk '/pattern/{condition} {action} so here $2=$2==0?1:$2 will set $2 to 1 if it is zero and leave it as it is if it is a non zero value, same with $4 value.
After setting values for $2 and $4 now I have given there 1 means it makes the condition to TRUE now when condition is TRUE, awk's by default action is print if no action is specified as in this code.
Hope this helps, let me know if you have any queries on same.
Hi suppose I have a csv file like this
count,1977,1978,1979
usa, , , blue
japan, red, yellow,green
india, , yellow,blue
china, blue, yellow, green
I want the output to be(replace everything, including empty data, with the most recent data):
... (1 Reply)
I need to print the second field of a file, taking spaces, tab and = as field separators.
; for 16-bit app support
MAPI=1
CMC=1
CMCDLLNAME32=mapi32.dll
CMCDLLNAME=mapi.dll
MAPIX=1
MAPIXVER=1.0.0.1
OLEMessaging=1
asf=MPEGVideo
asx=MPEGVideo
ivf=MPEGVideo
m3u=MPEGVideo (2 Replies)
I have a pipe delimited file with 27 fields. Each record has 26 fields. I need to search for the 25,26,27 fields and replace "," with nothing.
How can I acheive this. Sed is more preferred.
e.g
data row
o/p (5 Replies)
Hi,
Say I have a record "1|22| | |". In which the third and fourth fields are <space> alone. I have to replace the <Space> with <null>.
Input:
"1|22| | |" --> "1|22|<space> |<space> |"
Expected output:
"1|22|||" --> "1|22|<null> |<null>|"
I tried:
echo "1|22| | |" | awk -F... (4 Replies)
Hi,
I am trying to execute this line
awk -F ";" -v OFS=";" '{gsub(/\./,",",$6); print}' FILE
but for multiple fields $6 $7 $8
Do you have a suggstion?
Tried:
awk -F ";" -v OFS="";"" "function GSUB( F ) {gsub(/\./,\",\",$F); print} { GSUB( 6 ); GSUB( 7 ); GSUB( 8 ) } 1"... (2 Replies)
Can you please help me with this ....
Input File
share "FTPTransfer" "/v31_fs01/root/FTP-Transfer" umask=022 maxusr=4294967295 netbios=NJ09FIL530
share "Test" "/v31_fs01/root/Test" umask=022 maxusr=4294967295 netbios=NJ09FIL530
share "ENR California" "/v31_fs01/root/ENR California"... (14 Replies)
Hi,
I have a tab delimited file as below:
AWA Divi DD01 None 1 2 Room AC 01-MAY-15 31-OCT-15 OT 01-MAY-15 31-OCT-15 CF 01-MAY-15 31-OCT-15
AW0 Beach DD02 None 1 2 Double AC 01-MAY-15 31-OCT-15 AD 01-MAY-15 31-OCT-15
The number of columns(fields) after 7th field is not fixed and... (3 Replies)
so its common knowledge one can print multiple fields with simple commands like this:
echo 12 44 45 552 24 | awk '{print $1,$4,$3}'
but suppose i want to avoid specifying the "$" symbol. is that possible? can something like this be done:
echo 12 44 45 552 24 | awk '{print $(1,4,3)}'
... (9 Replies)
Discussion started by: SkySmart
9 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)