When we download file from the internet, we need to be certain of the consistency of the file that we download ever the internet. So that we know the file is not currupted. To do this we need to use md5sum.
to firstly use md5sum we need to create md5sum first from the file that we know is not corrupted so that we can compare it to another file in order to know that another file is corrupted or not.
here I use limewire packages to create md5sum
jacobian@linux-5fkn:~> md5sum limewire-basic-4.18.3-2.noarch.rpm
44254be6590b24dec8af1c7f665554e9 limewire-basic-4.18.3-2.noarch.rpm
then create another folder that has another file such as limewire-basic-4.18.3-2.noarch.rpm and a text file named limewire-basic-4.18.3-2.noarch.rpm.md5. In the text file paste the last output so that it contains
44254be6590b24dec8af1c7f665554e9 limewire-basic-4.18.3-2.noarch.rpm
save and then close the file. Open your konsole and change to that directory. Then use this command
jacobian@linux-5fkn:~/limewire> md5sum -c limewire-basic-4.18.3-2.noarch.rpm.md5
limewire-basic-4.18.3-2.noarch.rpm: OK
you have seen that the file is not corrupted. And we can use it to install packages.
Linux IP command
July 7, 2008
In linux there are many command for networking, below is some of them that I had known.
Display Current Config for all NIC’s: ifconfig
Display Current Config for eth0: ifconfig eth0
Assign IP: ifconfig eth0 192.168.1.2
Assign IP/Subnet: ifconfig eth0 192.168.1.2 netmask 255.255.255.0
Assign Default Gateway: route add default gw 192.168.1.1
Assign multiple IP’s: ifconfig eth0:0 192.168.1.2
Assign second IP: ifconfig eth0:1 192.168.1.3
Disable network card: ifconfig eth0 down
Enable network card: ifconfig eth0 up
View current routing table: route “or” route -n
View arp cache: arp “or” arp -n
Ping: ping -c 3 192.168.1.1
Trace Route: traceroute www.whatismyip.com
Trace Path: tracepath www.whatismyip.com
DNS Test: host www.whatismyip.com
Advanced DNS Test: dig www.whatismyip.com
Reverse Lookup: host 66.11.119.69
Advanced Reverse Lookup: dig -x 66.11.119.69
source : www.whatismyip.com
