Рубин (1,9 +)
$> ruby -ne 'print $_.sub(/.*\(|\).*$/,"")' file
1,'akbar\'s','Mumbai, Delhi road, India'
2,'amar\"s','South Africa, ghana'
или оболочка (удар)
$> while read -r line; do line=${line#*(}; echo ${line%)*}; done <file
1,'akbar\'s','Mumbai, Delhi road, India'
2,'amar\"s','South Africa, ghana'
или awk
$> awk '{sub(/.*\(/,"");sub(/\).*/,"")}1' file
1,'akbar\'s','Mumbai, Delhi road, India'
2,'amar\"s','South Africa, ghana'
или сед
$> sed -rn 's/.*\(//;s/\).*//p' file
1,'akbar\'s','Mumbai, Delhi road, India'
2,'amar\"s','South Africa, ghana'