Shell Programming and Scripting

BEGIN { IGNORECASE = 1 }

grep -i -E <pattern> <file_name>

echo "Enter first_name:"
read f
awk 'BEGIN { INGNORECASE = 1 }
$2 == "'"$f"'" {print "name" $2,$1}' file

echo "Enter first_name:"
read f
export f
awk 'BEGIN { INGNORECASE = 1 } $2 == ENVIRON["f"] {print "name" $2,$1}' file

echo "Enter first_name:"
read f
grep -i $f file | awk '{print "name" $2,$1}'

typeset -l a
typeset -l b
read a
cat a.dat | while read first sec junk
do
  b=${sec}
  [[ ${a} == ${b} ]] && echo "Got ya: $sec, $first"
done

echo "Enter first_name:"
read f
awk -v varF="${f}" 'BEGIN { INGNORECASE = 1 } $2 == varF {print "Name: " $2,$1}' file