Task 1: Server management with Linux commands
Answer to question number 1
This section describes the selection of the command line interface over the graphical user interface. It has been noted that the command line interface provides an efficient way of performing the tasks in the Linux systems over the graphical user interface as the command line interface provides the user with a higher level of flexibility than that of a graphical user interface [3]. In addition to this the installation of the software and configurations can be done on the system very easily with the help of the command line interface by using single commands. In addition to this, the information about the process running in the system can be also be acquired very easily in the command line interface by running some simple commands [5]. The ps command can be used for this purpose. Additionally the can be used to write the output by using a file, the cat command can be used to filter the output of the system which also includes the grep command. In addition to this, the command line tools also provides the users with the so many facilities as they have the option to switch in the interface.
Answer to question number 2
Using the mkdir command and cd command
This is the list open files command. This command provides the user with the list of standard output files and information about the files opened by the process for the required Unix dialects.
Syntax of LSOF
The syntax of list open files command is lsof. Screenshots
This command is used to print the connections, routing tables, interface statistics, masquerade connections and multicast memberships.
Syntax of NETSTAT
netstat [address_family_options] [–tcp|-t] [–udp|-u] [–raw|-w]
[–listening|-l] [–all|-a] [–numeric|-n] [–numeric-hosts]
[–numeric-ports] [–numeric-users] [–symbolic|-N]
[–extend|-e[–extend|-e]] [–timers|-o] [–program|-p]
[–verbose|-v] [–continuous|-c]
netstat {–route|-r} [address_family_options] [–extend|-e[–extend|-e]]
[–verbose|-v] [–numeric|-n] [–numeric-hosts] [–numeric-ports]
[–numeric-users] [–continuous|-c]
netstat {–interfaces|-i} [–all|-a] [–extend|-e[–extend|-e]] [–verbose|-v]
[–program|-p] [–numeric|-n] [–numeric-hosts] [–numeric-ports]
[–numeric-users] [–continuous|-c]
netstat {–groups|-g} [–numeric|-n] [–numeric-hosts] [–numeric-ports]
[–numeric-users] [–continuous|-c]
netstat {–masquerade|-M} [–extend|-e] [–numeric|-n] [–numeric-hosts]
[–numeric-ports] [–numeric-users] [–continuous|-c]
netstat {–statistics|-s} [–tcp|-t] [–udp|-u] [–raw|-w]
netstat {–version|-V}
netstat {–help|-h}
Screenshots
The mtr is used as a network diagnostic tool. It combines the functionality of the trace routes and ping programs in single network diagnostic tool. As mtr starts it investigates the network connections in between the hosts.
Syntax of MTR
mtr [ -hvrctglspni46 ] [ –help ] [ –version ] [ –report ] [ –report-cycles COUNT ] [ –curses ] [ –split ] [ –raw ] [ –no-dns ] [ –gtk ] [ –address IP.ADD.RE.SS ] [ –interval SECONDS ] [ –psize BYTES | -s BYTES ] HOSTNAME [PACKETSIZE]
ScreenshotsTask 2: Server management Systems
Red Hat enterprise Linux
Introduction
This section of the assignment is used for providing the information about the Red Hat enterprise system [2]. The back ground information about the system and the targeted platform has been provided in this section. The advantage and the disadvantage of the system also is provided in the report.
Background information
Red hat inc is an American multinational company providing open-source software products to the enterprise community [1]. Red hat enterprise Linux is a Linux distribution developed by Red hat. So the name goes as Red hat enterprise Linux [8]. It is mainly targeted for the commercial market. The first version had the name The Red Hat Linux Advanced Server. In 2003 it was re-branded to The Red Hat Enterprise Linux AS. Then two more variants were added The Red Hat Enterprise Linux ES and The Red Hat Enterprise Linux WS.
Target Platform
Red Hat Enterprise Linux provides a stable foundation for modernizing IT infrastructure, on which enterprises and developers can roll out new applications, virtualize environments and create a hybrid cloud to deploy Red Hat’s certified open source solutions [6]. Users can also customize their versions with add-on functionality from Alibaba, including desktop options and developer tools.
Advantage and Disadvantages
The advantages of the red hat enterprise are described below:
The main disadvantage of the red hat enterprise Linux is package manager. OS is actually based on RPM (Red hat Package Manager). RPM used by red hat it installs software but it doesn’t solve dependency so software installed is not ready to run or it may not work without dependency [4]. To deal with the problem Red hat developed yum (yellow dog updater modified) that installs software from rpm YUM uses numerous third party repositories to install packages automatically by resolving their dependencies issues [7]. Therefore the package management system is messed up
Conclusion
For conclusion it can be said that the Red Hat Enterprise Linus is an efficient tool that can be by the users. The system like any other system consists of various type of advantages and disadvantages and this is described efficiently in the report. It has been seen that there are some difficulties faced by the users in the system the most important being the package manager. However the organization has been looking to introduce some modifiers that would be helping the users. In addition to this there are some added advantages for the system and the system would be very beneficial for the users in the other aspects. Hence, from the section we would be able to understand the utility of the Red Hat Enterprise Linux.
References
[1] Belay, A., Prekas, G., Klimovic, A., Grossman, S., Kozyrakis, C. and Bugnion, E. IX: A protected dataplane operating system for high throughput and low latency. In Proceedings of the 11th USENIX Symposium on Operating System Design and Implementation (OSDI) (No. EPFL-CONF-201671). USENIX, 2014.
[2] Dautenhahn, N., Kasampalis, T., Dietz, W., Criswell, J. and Adve, V., March. Nested kernel: An operating system architecture for intra-kernel privilege separation. In ACM SIGPLAN Notices (Vol. 50, No. 4, pp. 191-206). ACM, 2015.
[3] Kumar, S., Stecher, G. and Tamura, K. MEGA7: molecular evolutionary genetics analysis version 7.0 for bigger datasets. Molecular biology and evolution, 33(7), pp.1870-1874 , 2016.
[4] Peter, S., Li, J., Zhang, I., Ports, D.R., Woos, D., Krishnamurthy, A., Anderson, T. and Roscoe, T. Arrakis: The operating system is the control plane. ACM Transactions on Computer Systems (TOCS), 33(4), p.11, 2016.
[5] Shin, S., Song, Y., Lee, T., Lee, S., Chung, J., Porras, P., Yegneswaran, V., Noh, J. and Kang, B.B., November. Rosemary: A robust, secure, and high-performance network operating system. In Proceedings of the 2014 ACM SIGSAC conference on computer and communications security (pp. 78-89). ACM, 2014.
[6] Silberschatz, A., Galvin, P.B. and Gagne, G. Operating system concepts essentials. John Wiley & Sons, Inc, 2014.
[7] Soldani, D. and Manzalini, A. Horizon 2020 and beyond: on the 5G operating system for a true digital society. IEEE Vehicular Technology Magazine, 10(1), pp.32-42, 2015.
[8] Criswell, J., Dautenhahn, N. and Adve, V., May. KCoFI: Complete control-flow integrity for commodity operating system kernels. In Security and Privacy (SP), 2014 IEEE Symposium on (pp. 292-307). IEEE, 2014.
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