Shell Programming and Scripting

$line= Some text with ERR message

echo $index

index=awk '{for(i=1;i<=NF;i++) if($1~/^ERR/){print i}'<$line

line="Some text with ERR message"
index=$(echo $line | awk '{for(i=1;i<=NF;i++) if($i~/^ERR/){print i}}')
echo $index

line="Some text with ERR message"
index=$(echo "${line%%ERR*}"| wc -c)
echo $index

expr 'Some text with ERR message' : '.*ERR' - 2
16
awk 'BEGIN{print index("Some text with ERR message", "ERR")}'
16

line="Some text with ERR message"
first=${line%%ERR*}x
index=${#first}