commandline session
$> 1 $echo hello > 2 $cat 1 $ $cat 2 hello $cp -b 2 cp: missing destination file operand after ‘2’ Try 'cp --help' for more information. $cp -b 2 2b $ls 1 2 2b $cat 2b hello $cp -x 2b 2c $ls 1 2 2b 2c $cat 2c hello $cp -x 2b /proc/ cp: cannot create regular file ‘/proc/2b’: Permission denied $sudo cp -x 2b /proc/ cp: cannot create regular file ‘/proc/2b’: Permission denied $cp -s 2c 2d $ls -l total 12 -rw-r--r-- 1 jeffrin jeffrin 0 Jun 1 22:28 1 -rw-r--r-- 1 jeffrin jeffrin 6 Jun 1 22:28 2 -rw-r--r-- 1 jeffrin jeffrin 6 Jun 1 22:28 2b -rw-r--r-- 1 jeffrin jeffrin 6 Jun 1 22:29 2c lrwxrwxrwx 1 jeffrin jeffrin 2 Jun 1 22:31 2d -> 2c $
http://pluto.infoclub.in/wp-content/uploads/2013/06/cp.c
http://stackoverflow.com/questions/5740042/enum-use-in-a-c-program
valavil.in 