grep 搜尋不包含關鍵字的行

grep -v down-v 是不顯示匹配上的內容，顯示不包含down的內容。

dotheright@dotheright

:~$ nmap -v -sn 192.168.1.1/24

dotheright@dotheright:~$ nmap -v -sn 192.168.1.1/24

nmap scan report for 192.168.1.0 [host down]

nmap scan report for 192.168.1.1 host is up (0.0021s latency).

nmap scan report for 192.168.1.2 [host down]

nmap scan report for 192.168.1.3 [host down]

…… nmap scan report for 192.168.1.98 [host down]

nmap scan report for 192.168.1.99 [host down]

nmap scan report for 192.168.1.100 host is up (0.084s latency).

nmap scan report for 192.168.1.101 [host down]

nmap scan report for 192.168.1.102 host is up (0.062s latency).

nmap scan report for 192.168.1.103 host is up (0.0060s latency).

nmap scan report for 192.168.1.104 [host down]

nmap scan report for 192.168.1.105 host is up (0.10s latency).

nmap scan report for 192.168.1.106 host is up (0.00092s latency).

nmap scan report for 192.168.1.107 [host down]

nmap scan report for 192.168.1.108 [host down]

…….

nmap scan report for 192.168.1.254 [host down]

nmap scan report for 192.168.1.255 [host down]

read data files from: /usr/bin/../share/nmap

nmap done: 256 ip addresses (6 hosts up) scanned in 4.28 seconds

dotheright@dotheright

:~$ nmap -v -sn 192.168.1.1/24  | grep up

dotheright@dotheright:~$ nmap -v -sn 192.168.1.1/24 | grep up

host is up (0.0034s latency).

host is up (0.021s latency).

host is up (0.16s latency).

host is up (0.012s latency).

host is up (0.035s latency).

host is up (0.0056s latency).

host is up (0.0012s latency).

nmap done: 256 ip addresses (7 hosts up) scanned in 3.63 seconds

dotheright@dotheright

:~$ nmap -v -sn 192.168.1.1/24  | grep -v down

dotheright@dotheright:~$ nmap -v -sn 192.168.1.1/24 | grep -v down

starting nmap 7.01 ( ) at 2016-10-28 00:57 cst

initiating ping scan at 00:57

nmap scan report for 192.168.1.1

host is up (0.0039s latency).

nmap scan report for 192.168.1.100

host is up (0.014s latency).

nmap scan report for 192.168.1.101

host is up (0.061s latency).

nmap scan report for 192.168.1.103

host is up (0.013s latency).

nmap scan report for 192.168.1.105

host is up (0.0090s latency).

nmap scan report for 192.168.1.106

host is up (0.000086s latency).

read data files from: /usr/bin/../share/nmap

nmap done: 256 ip addresses (6 hosts up) scanned in 2.96 seconds

dotheright@dotheright

:~$ nmap -v -sn 192.168.1.1/24  | grep -v down  | grep 192

dotheright@dotheright:~$ nmap -v -sn 192.168.1.1/24 | grep -v down | grep 192

nmap scan report for 192.168.1.1

nmap scan report for 192.168.1.100

nmap scan report for 192.168.1.101

nmap scan report for 192.168.1.103

nmap scan report for 192.168.1.104

nmap scan report for 192.168.1.105

nmap scan report for 192.168.1.106

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