add filteruntil

Signed-off-by: Naman Sood <mail@nsood.in>

src/filteruntil.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+
+int main(int argc, char **argv) {
+	if(argc != 2) {
+		std::cerr << "usage: " << argv[0] << " <pattern-string>" << std::endl;
+		return 1;
+	}
+
+	std::string pattern(argv[1]);
+	std::string line;
+
+	while(std::getline(std::cin, line)) {
+		if(line.find(pattern) != std::string::npos) {
+			break;
+		}
+	}
+
+	while(std::getline(std::cin, line)) {
+		std::cout << line << std::endl;
+	}
+}