no matter which programming language one chooses, performing input and output operations are the core knowledge that one definitely needs to posses. from disk files, devices, other
cron is a job scheduling subsystem for linux. it is used for scheduling repeating jobs. if you wish to schedule a one shot job use the at subsystem. all users on a linux box may
you may not want people to see important files on your computer, particularly if it has multiple users. there are several different ways to restrict access to a particular file in