How to extract work in line string.?

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# 8  
Old 03-07-2014
You missed one back slash and "$2"
tail -1 FBOC810G_140305.CSV | awk -F[\"\.] '{print $2}'

Last edited by pravin27; 03-07-2014 at 03:35 AM..
# 9  
Old 03-07-2014
Here is an alternative way to do it just using awk (without tail). Unless your input files are BIG, it is probably faster to let awk read the entire input file than it is to start up another process to run tail.
if [ $# -ne 1 ] || [ ! -r "$1" ] || [ ! -f "$1" ]
then    printf 'Usage: %s readable_regular_file\n' "${0##*/}" >&2
        exit 2
awk -F '[.+"]' '
FNR == 1 { f = FILENAME }
{          t = $2;n = $4 }
END {      if(t == "TRAILER") {
                print f, "transfer complete,", n + 0, "lines."
                exit 0
           print f, "transfer incomplete."
           exit 1
}' "$1"

With an input file named complete.txt containing:
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6

and a file named incomplete.txtcontaining the same 1st six lines, but missing the trailer line, running the above script (assuming you name it checker) as:
./checker complete.txt

produces the output:
complete.txt transfer complete, 7 lines

with exit code 0, and running the command:
./checker incomplete.txt

produces the output:
incomplete.txt transfer incomplete.

with exit code 1.
# 10  
Old 03-07-2014
I changed the print to $2 and it worked. Not sure why "TRAILER.1+0000007+1" it would be position $2?

tail -1 FBOC810G_140305.CSV | awk -F[\"\.] '{print $2}'

# 11  
Old 03-07-2014
Sorry .. I have corrected my earlier post . I was taking input as
echo "TRAILER.1+0000007+1" | awk -F[\"\.] '{print $1}'

echo '"TRAILER.1+0000007+1"' | awk -F[\"\.] '{print $2}'

# 12  
Old 03-07-2014
Originally Posted by pone2332
I changed the print to $2 and it worked. Not sure why "TRAILER.1+0000007+1" it would be position $2?

tail -1 FBOC810G_140305.CSV | awk -F[\"\.] '{print $2}'

With double quote " and period . as field separators, and the input above: the first field is the empty string before the first double quote, the second field is TRAILER, the third field is 1+0000007+1 and the fourth field is the empty string after the the trailing double quote.
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