How to redirect txt file to password input in a script?

tmtkobedmx8 · 05-13-2014, 10:56 PM

I am trying to change my /etc/hosts with /etc/hosts.template

the command i'm running is

sudo echo "/etc/hosts.template" > /etc/hosts < password.txt

I keep getting /etc/hosts : permission denied

Im not sure what I am doing wrong.

Any help will be very appreciated. Thanks

evo2 · 05-13-2014, 11:23 PM

Hi,

can you explain in words what you re trying to do? The command you posted makes no sense to me.

My best guess is the following

Code:

sudo cp /etc/hosts.template /etc/hosts

But this really is just a guess.

Evo2.

tmtkobedmx8 · 05-14-2014, 12:10 AM

I am trying to write a script to automate a LAN installation. It's just an experiment for a class project. So what I did was create a hosts.template file for the hosts file so that when the script runs, it replaces the hosts file with the hosts.template which holds more hosts that the default hosts file. Thanks

tmtkobedmx8 · 05-14-2014, 12:20 AM

Hey evo2,

I just tried

Quote:

sudo cp /etc/hosts.template /etc/hosts

and it seems to do the trick, but i get prompted for a password. I was wondering if it is possible to include the password in a file within the script so that i don't have to enter it manually?

Thanks

Tmtkobedmx8

ondoho · 05-14-2014, 12:39 AM

Quote:

Originally Posted by tmtkobedmx8

it seems to do the trick, but i get prompted for a password

hmm.
if this is an automated script to set up a lan network, it should have root access already.
so your mistake is somewhere earlier in the process.

evo2 · 05-14-2014, 01:22 AM

Hi,

you can configure sudo to not require a password for certain commands. Perhaps what you want to do is run your script with sudo, not each individual command.

Cheers,

Evo2.

eklavya · 05-14-2014, 01:50 AM

You can rename it.

Quote:

sudo mv /etc/hosts.template /etc/hosts

If you want to put data of password.txt into /etc/hosts

Quote:

sudo sh -c 'cat password.txt >> /etc/hosts'

I hope you have back up of original /etc/hosts.

Please do not create duplicate threads.
http://www.linuxquestions.org/questi...pt-4175504914/

Habitual · 05-14-2014, 03:11 PM

Quote:

Originally Posted by eklavya

You can rename it.
...
Please do not create duplicate threads.
http://www.linuxquestions.org/questi...pt-4175504914/

Sounds like a Virtual Host|Machine.
I wouldn't rename that file, personally

eklavya · 05-15-2014, 12:16 AM

Quote:

Originally Posted by Habitual

Sounds like a Virtual Host|Machine.
I wouldn't rename that file, personally

Ok, then copy it

Code:

sudo cp /etc/hosts.template /etc/hosts

tmtkobedmx8 · 05-15-2014, 02:24 AM

Thanks everyone for the suggestions.

Quote:

sudo cp /etc/hosts.template /etc/hosts

did the trick and i had to run the script as sudo so i didn't have to be prompted all the time.

Tmtkobedmx8