UNIX for Beginners Questions & Answers

echo %time% %date% >> file.log

cat script.ksh    ####Where cat command is for reading a file, so here I am letting you know your script's content which are as follows. 
                     You could create this script.ksh by vi/nano etc editors by putting following command into it and saving it then with proper permissions then.
date >> file.txt

2016-09-26 14:00:01 Mary CBS

cat script.sh
DATE=`date`
WHOAMI=`users`
echo $DATE $WHOAMI > file

echo "Name user:"
                read user
            echo "Name channel:"
                read channel
                    if [[ $(grep -c $user registrations.txt | grep $channel registrations.txt) -eq 0 ]]; then
                        echo date and time  $user $channel >> registrations.txt
                else
                    "Association already exists"
                fi;;

date >> file.log

if [[ $(grep -c $user registrations.txt | grep $channel registrations.txt) -eq 0 ]];