Which of the following commands show remote SSH, FTP & telnet sessions for a particular day?

Hundreds of people log in to a server from remote locations per day.
Which of the following commands show remote SSH, FTP & telnet sessions for a particular day?

Hundreds of people log in to a server from remote locations per day.
Which of the following commands show remote SSH, FTP & telnet sessions for a particular day?

A.
cat /var/log/messages | grep ‘"date "+%b%e’"" | egrep ‘(telnet|ssh|ftp)’

B.
cat /var/log/messages | date | egrep ‘(telnet|ssh|ftp)’

C.
cat /var/log/messages | grep ‘"date "+%b%e…..’ | grep -E ‘(telnet|ssh|ftp)’

D.
cat /var/log/messages > grep ‘"date "+%b %e1"" > egrep ‘(telnet |ssh |ftp)’

E.
cat /var/log/messages | egrep ‘(telnet|ssh|ftp)’

Explanation:
man grep + man egrep



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