Melihat IP Address yang Aktif didalam Network

Dengan menggunakan command NMAP dibawah.

root@r0x:/home# nmap -sP 1.1.1.1/24

Starting Nmap 5.21 ( http://nmap.org ) at 2012-01-21 19:29 MYT
Nmap scan report for dir-615 (1.1.1.1)
Host is up (0.0021s latency).
MAC Address: 34:08:04:01:E6:C8 (Unknown)
Nmap scan report for 1.1.1.10
Host is up (0.0048s latency).
MAC Address: 00:01:6C:6C:24:D6 (Foxconn)
Nmap scan report for 1.1.1.11
Host is up.
Nmap done: 256 IP addresses (3 hosts up) scanned in 31.34 seconds

Check Disk Space in Linux

Untuk melihat disk space didalam command line

contoh (1)
root@ubuntu:/# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/loop0 17884496 3344332 13631672 20% /
udev 910424 4 910420 1% /dev
tmpfs 367340 812 366528 1% /run
none 5120 0 5120 0% /run/lock
none 918340 136 918204 1% /run/shm
/dev/sda2 204697596 179872828 24824768 88% /host

contoh (2)
root@ubuntu:/# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/loop0 18G 3.2G 14G 20% /
udev 890M 4.0K 890M 1% /dev
tmpfs 359M 812K 358M 1% /run
none 5.0M 0 5.0M 0% /run/lock
none 897M 136K 897M 1% /run/shm
/dev/sda2 196G 172G 24G 88% /host