Shell Programming and Scripting

awk '{if ($1==$2) { print $1,$3} else {print $0}}' inputfile

sed -e 's/(//g' -e 's/)//g' input.txt | awk '{print $1,$3}' > output.txt

test 10
to 25
see 45

# sed 's/)\|(//g;s/\(.*\) .* \(.*\)/\1 \2/' file
test 10
to 25
see 45

 
sed 's/\(.*\) \1\{1,\} [\(]\([0-9]*\)[\)]/\1 \2/' infile

sed 's/\(.* \)\1(\(.*\))/\1\2/' infile

# sed 's/.* \(.* [^(]*\)/\1/;s/[()]//g' file

# sed 's/[()]//g;s/.* \(.* \)/\1/' file

# sed 's/.* \(.*\) (\(.*\))/\1 \2/' file