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