04-08-2013
Cant get awk 1liner to remove duplicate lines from Delimited file, get "event not found" error..help
Hi,
I am on a Solaris8 machine
If someone can help me with adjusting this awk 1 liner (turning it into a real awkscript) to get by this "event not found error"
...or
Present Perl solution code that works for Perl5.8 in the csh shell ...that would be great.
******************
Here is the comma delimited InputFile i have (File1.dat):
It has (7 records each with 3 fields)
I want to define a duplicate record as any record where Field1 & Field2 values repeat across 2 or more records so that in by input file below...I have 3 duplicate records. Then I want to only keep the 1st occurrence of this duplicate record.
kk,12,a
aa,11,n --> duplicate
ee,13,b
aa,11,f --> duplicate
bb,17,k
pp,12,t
aa,11,w --> duplicate
What I want my awk script or perlscript to do is produce the following output (that is reduce the file from the 7records to 5records) , in essence keeping the 1st duplicate line, record only (again duplicate is defined as Field1 & Field2 having the same value across the records)
Desired Output File is here (5records, it kept only the 1st duplicate):
kk,12,a
aa,11,n
ee,13,b
bb,17,k
pp,12,t
I tried the following awk 1-liner at the csh prompt
awk '!x[$1,$2]++' FS="," File1.dat
but got the error message "Event not found"
***********
If someone knows how i can correct the above awk 1liner or how to make an alternative multi-line awk or perl script to do this ..that okay with me also. Just let me know where in your code it references
a) the fact that the files are comma delmited
b) Field1 & Field 2 as the fields by which to classify a record as a duplicate
Thanks in advance (this has stumped me for hours ..)
andy b
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IGAWK(1) Utility Commands IGAWK(1)
NAME
igawk - gawk with include files
SYNOPSIS
igawk [ all gawk options ] -f program-file [ -- ] file ...
igawk [ all gawk options ] [ -- ] program-text file ...
DESCRIPTION
Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).
AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like
@include getopt.awk
in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.
OPTIONS
See gawk(1) for a full description of the AWK language and the options that gawk supports.
EXAMPLES
cat << EOF > test.awk
@include getopt.awk
BEGIN {
while (getopt(ARGC, ARGV, "am:q") != -1)
...
}
EOF
igawk -f test.awk
SEE ALSO
gawk(1)
Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.
AUTHOR
Arnold Robbins (arnold@skeeve.com).
Free Software Foundation Nov 3 1999 IGAWK(1)