Using AWK to delete line and output result

Question

I have a text file and manage to find the line through output comparison. With the book title and author name.

awk -F ':' '/KungFu Feet|Chuck Norris/'  test.txt

Kungfu Feet:Chuck Norris:12:1:1

Is there any way to delete the line using awk and return the output in a bash file?

EDIT

I would like to do a check for the following item before i do the deleting using awk

  If (( Book = KungFu Feet  && Author = Chuck Norris )); do
    echo "Item is found unable to delete" 
  else 
    echo "Deleting.."  

Answer 1

Something like this will do what you want:

$ awk -F ':' '!/KungFu Feet|Chuck Norris/'  test.txt | tee newtest.txt
KungFa Feet|Chuck Narris:12:1:1
KungFe Feet|Chuck Nerris:12:1:1

New file

$ cat newtest.txt 
KungFa Feet|Chuck Narris:12:1:1
KungFe Feet|Chuck Nerris:12:1:1

Answer 2

Unless you have a need to do this with awk, you might want to try something with grep and sed:

if grep -E "(KungFu Feet|Chuck Norris)" your_file ; then
    # fancy stuff in case string has been matched
    sed -r "/(KungFu Feet|Chuck Norris)/d" < your_file > new_file
else
    # fancy stuff in case it hasn't
fi

If you need POSIX sed compatibility, you'll have to expand the regex for sed (grep in recent POSIX versions supports the -E option):

sed -r "/KungFu Feet/d;/Chuck Norris/d" < your_file > new_file

Some version of sed also allow in-place changes through the -i option.

Re-reading the answer, you would probably need to match just "KungFu Feet:Chuck Norris" in both sed and grep. This is of course thanks to the extremely simple format of your data.