Cody Ford NT1430 Unit 5 Homework Chap 18 Pg. 699 Q1 difference between scp and sftp utilities? SCP is a secure file copy utility and SFTP is a secure file transfer protocol even though it does not have anything to do with the FTP we are use to in windows. Q2 How can you use SSH to find out who is logged in on a remote system? By typing $ ssh host who in the terminal window Q3 How would you use scp to copy ~/.bashrc file from the system named plum to the local system? From the local system you would
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utility allows you to change access permissions for a file? chmod 14. What symbol instructs the shell to redirect the output of a command to the specified file ? Input (>) Command [arguments] > filename 15. What symbol instructs the shell to redirect a command’s input to come from the specified file instead of from the keyboard? Output (<) command [arguments] < filename 16. What command symbol causes the shell to add new information to the end of file‚ leaving existing information intact. Append output
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CHAPTER 2 QUES. & ANSWERS 1. If a network administrator enters these commands on a switch‚ what will be the result? Switch1(config-line)# line console 0 Switch1(config-line)# password cisco Switch1(config-line)# login to secure the console port with the password "cisco" to deny access to the console port by specifying 0 lines are available to gain access to line configuration mode by supplying the required password to configure the privilege exec password that will be used for remote access
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language. The stream lining of these two modes of communication is done by the middle layer called Shell. Thus the three basic layers are:- ✓ HARDWARE ✓ KERNEL ✓ SHELL At the core is the physical component of the computer system i.e. the hardware and the central part of UNIX system is Kernel which has record of all the hardware and knows how to communicate with every piece of hardware. The shell is the command interpreter. The uppermost layer consists of users creating the application
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What is SSH? SSH is a Secure Shell that uses a secure encrypted communication protocol designed to replace older insecure protocols like telnet‚ rsh‚ and ftp. SSH authentication is done with a username and password combination‚ which is the default. This is the most simplistic usage we will see. $ ssh user@secureserver SSH comes with all Linux distributions as well as other Unix variants. SSH is not a complete security solution and it will not protect against trojans‚ viruses‚ etc. Why would
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from Appledore Island‚ north of Cape Cod. She compared these old shells to new shells she had gathered herself at the same place. Seeley measured the thickness of each shell. As the graphs and photos in the illustration (reprinted from Seeley‚ 1986) show‚ the snail population on Appledore Island in the early 1980s was‚ indeed‚ dramatically different from the snail population that was there in 1871. The snails had‚ on average‚ shells that were thicker than those of their ancestors. The 1980s population
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b basename Strip directory and suffix from filenames bash GNU Bourne-Again SHell bc Arbitrary precision calculator language bg Send to background break Exit from a loop • builtin Run a shell builtin bzip2 Compress or decompress named file(s) c cal Display
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electrons of an atom occupy quantum levels or orbitals starting from the lowest energy level‚ and proceeding to the highest‚ with each orbital holding a maximum of two paired electrons (opposite spins). Electron shell #1 has the lowest energy and its s-orbital is the first to be filled. Shell #2 has four higher energy orbitals‚ the 2s-orbital being lower in energy than the three 2p-orbitals. (x‚ y & z). As we progress from lithium (atomic number=3) to neon (atomic number=10) across the second row or
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how to get Unix help. 1.2 OVERVIEW OF UNIX Even after thirty-five years of its creation Unix is still regarded as one of the most versatile‚ flexible and powerful operating systems in the computer world. Before you start swimming in your Unix shell‚ you must find out why people still regard it as powerful. As you may know‚ it was created at Bell Labs in 1970‚ written in the C Programming Language‚ which was developed at the same time. It supports a large number of simultaneous users‚ runs with
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face-centered cubic‚ and this is the same as the body-centered cubic except the atom is the center of six other atoms. These arrangements cause a crystal structure. Used in the making of spaceships. As far as bonding goes‚ metals easily lose their outer shell electrons‚ or valence electrons. This property is what gives them their ability to easily conduct heat and electricity.There are sub-groups of metals called the alkali metals‚ alkaline earth metals‚ and transition metalsNon-metals: Bad conductor
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