Shell Programming and Scripting

awk '{  gsub(/\r/, "")          # get rid of existing carriage returns
}
NF<12 { getline p               # join split lines
        $0 = $0 p
}       
{       printf("%s\r\n", $0)    # print joined lines with CR/NL terminators
}' FS=, OFS=, sample.csv

awk '
  NF<12 {
    getline p               # join split lines
    $0 = $0 p
  }
  {
    gsub(/\r/, "")          # get rid of existing carriage returns
    printf("%s\r\n", $0)    # print joined lines with CR/NL terminators
  }
' FS=, OFS=, sample.csv

#!/bin/ksh
tr -d '\r' <$1>$1.tmp
i=0
while read -r line
do
length=`echo "$line"|sed 's/[^,]//g'`
i=`expr $i + ${#length}`
if [ $i -eq 11 ];then
printf "$line\n"
i=0
else
printf "$line"
fi
done<$1.tmp
rm $1.tmp

./test.sh sample.csv

#!/bin/bash