Question

In Unix - Devise a system which allows you to use an alias named "current" to display recursively only the ordinary files in the current directory tree which have been modified since you logged in.

Answer 1

Alias command:

Alias command is to create anything our own as a command in Linux or UNIX operating systems. After creating own command with an alias, just replaces the alias name with the original command for executing.

Syntax: alias [-p] [name [=value]…]

Command Screenshot using alias:

sh-4.4$ alias current-" find . -mmin -(date "T" last whoami | grep "$1" | cut -dl -f5) -type f -exec ls -l "

Command in Textual format:

alias current= “find . -mmin – (date +”%T” -last whoami | grep “^$1” | cut -d\ -f5) -type f -exec ls -l {} +”

Explanation: . alias current is the created alias name. . find . is to find all the files in the root directory » -mmin is to refer the files for specified minutes . date "?T', is to get the current date. -last whoami get the users who recently login users with the above specified minutes in the system cut -d\ -f5 cut the last columns in the above output -type f -exec 1s -l ) + to get the list of ordinary files in the directory Finally, above command is to get the difference between the current time and user log in time using alias command. To execute the command just type current and the path of the directory

Note: Using online editor unable to display the output. Because there is only one user login at a time.