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 | egrep'(telnet|ssh|ftp)’

B.
cat/var/log/messages > grep ‘”date “+%b %e1″” > egrep ‘(telnet |ssh |ftp)’

C.
cat /var/log/messages | date | egrep'(telnet |ssh| ftp)1

D.
cat/var/log/messages | grep ‘”date “+%b%e'”” | egrep'(telnet |ssh| ftp)’

E.
cat/var/log/messages | grep'”date “+%b%e…..| grep-E'(telnet|ssh| ftp)’

Explanation:
man grep + man egrep