This task will attempt to get and set the modification time of a file.
#include <boost/filesystem/operations.hpp> #include <ctime> #include <iostream> int main( int argc , char *argv[ ] ) { if ( argc != 2 ) { std::cerr << "Error! Syntax: moditime <filename>!\n" ; return 1 ; } boost::filesystem::path p( argv[ 1 ] ) ; if ( boost::filesystem::exists( p ) ) { std::time_t t = boost::filesystem::last_write_time( p ) ; std::cout << "On " << std::ctime( &t ) << " the file " << argv[ 1 ] << " was modified the last time!\n" ; std::cout << "Setting the modification time to now:\n" ; std::time_t n = std::time( 0 ) ; boost::filesystem::last_write_time( p , n ) ; t = boost::filesystem::last_write_time( p ) ; std::cout << "Now the modification time is " << std::ctime( &t ) << std::endl ; return 0 ; } else { std::cout << "Could not find file " << argv[ 1 ] << '\n' ; return 2 ; } }
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