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actually i got the concept of boot loaders : it reside in MBR and its function is to load the root file system of os into memory i.e. to load whole os into memory when system starts.

i have got...

Is it possible user without a primary group

I believe there are two methods of adding a user to a group. using usermod and gpasswd. but most of the time we tent to use user mod. does there any difference between these two methods ....

...

actually i want to put the output of the command date into the shell variable mydate

mydate ="$(date)"

i am just learning shell scripting and came across some doubts as i check some possible interview questions and my doubts .

mydate ="$(date)"

what is the use of adding double code and parenthesis in the above code ..
can i write the same code as
mydate= $date

I have read in many articles that ports below 1024 are privileged ports. My question is if port 1024 is an privileged or a unprivileged port. Some say privileged and some unprivileged..

Actually i am from software background and wish to pursue my carrier in linux.
I will clear my linux plus and LPI 1 exam in a week time. wish to ask which certification i should prepare for . my...

Thank you Drysdalk . i believe i didn't understood properly what a single ip address means. From your above explanation . for e.g. 192.168.1.1 through 192.168.1.254 - Free IPs (Usable for hosts) Does...

i just came to learn that my public ip address through whatsmyip

46.126.40.51

since its class A IP address so default subnet mask is
46.126.40.51/8 ie 255.0.0.0

does that means apart...

thanks a lot for wonderful explanation. Does that means 192.168.1.0/24 has 254 usable host address and that 254 host has to share only one network address. ie i can have only one network and within...

Dear friends am confused with the logic behind subnetting. i am learning from video tutorial and quite didn't get it
so my question is as below



After subnetting class c address by borrowing...

Thank you very much for the wonderful explanation ,it answered my doubts .

I am not clear with the part of concept of Tunneling using ssh.

ssh -f -N -L 1029 192.168.1.47:25 james@192.168.1.47


I found out that above code works for me . but didn't quite well...

Thanks for your patience . my idea is to connect my computer from england to my friend computer in USA. both are pc with linux os installed and connected to internet. how can i find the hostname or...

thank you guys. finding my hostname or local ip address of system within LAN network is quite easy through ifconfig. but i cannot use that physical address of LAN network to connect to other network...

thank you very much drysdalk for correct and prompt answer.
%unixforum ALL=NOPASSWD: /bin/ls,/bin/mkdir,/bin/rmdir

may i ask why percentage in front of uniform group name is written ..does...

i have been learning linux from some time for linux plus exam and learned SSH protocol and have practised to connect to remote computer within Lan network and able to sucesssfully connect it .
using...

i have tried to use a sudo command from a user level . but instead of asking for user password it asked for root password . how should i go about it .


james@opensuse:/etc> sudo ifconfig
root's...

:D:D:D
These are list of command i typed on opensuse terminal and evolve lots of doubt around ,that i can't answer.


COMMAND 1 linux-xavv:/ # cd
COMMAND 2 linux-xavv:~ #

Does above...