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Root

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Submitted By Tippy666
Words 382
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10/28/2013
LINUX
James Tucker
Unit 4 Exercise
Ch 14 p. 582, Ex 1-5 1. Which commands can you use from the command line to send a file to the default printer?
Redhat / Fedora 12 Answer: lp and lpr without arguments send their standard input to the printer. 2. Which command would you give to cancel all print jobs on the system?
Executed as root, either lprn - or cancel –a removes all jobs from the print queues. 3. Which commands list your outstanding print jobs? lpc status shows a list of the print queues lpq shows what is in the default print queue lpq -Psomeprinter shows what is in a specific print queue 4. What is the purpose of sharing a Linux printer using Samba?
Sharing a Linux printer using Samba allows windows and OS/2 clients to send print jobs to the printer. 5. Name three printing protocols that CUPS supports. Which is the CUPS native protocol?
CUPS supports IPP, LPD/LPR, HTTP, SMB, and JetDirect (socket) protocols.

Ch 10 p. 403, Ex 1 1. Describe the similarities and differences between these utilities: a. scp and ftp – scp is the "Secure Copy" program and it works just like the "cp", or "Copy" program, only it works through via the Secure Shell. ftp is the "File Transfer Protocol" and has nothing to do with security. Usually operates as its own interface with its own set of user sub-commands.
Both are used to transfer files from one host to another via network connection. b. ssh and telnet –
Both Telnet and SSH is used for remote Log-In and to trasnfer data.
Telnet -> Telecommunication network
It is not secure and anyone can use it. It uses ASCII format.
Information sent and received can be easily read by anyone (Hackers) in that network.
SSH -> Secure Shell
It is highly secure.
Information passed accross the network is encrypted.
Hackers will not be able to read your data.
So its highly recommended to use SSH to transafer data's securly. c. rsh and ssh - Both of these utilities allow a remote user to log in (remotely) and execute commands via the command line.

Sources;
Google search lead to WIKI anwers page that seemed to answer questions best.
http://wiki.answers.com/Q/What_are_the_similarities_between_rsh_and_ssh_utilities

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