Franske CNT-2311 SP10 Commands

These are the commands learned by session:

Session	Commands	Description
Session 1	ls cd mv cp mkdir man rm rmdir touch	lists the contents of the current directory allows you to navigate to new directories allows you to move (rename) content allows you to copy content allows you to make directories allows you to view a manual of a command allows you to remove content allows you to remove directories allows you to change file access and modification times
Session 2	cat less more grep fc locate updatedb find whereis chown chgrp chmod tar gzip du df	display the contents of a text file for viewing allows backward movement in the file as well as forward movement same thing as less but the entire output allows you to find text within a file allows you to display the contents of the history file, edit the contents of the history file, and re-execute previous commands stored in the history file which provides a secure way to index and quickly search for files on your system simply a link to slocate that implies the -u option that creates slocate database starting at the root directory will search any set of directories you specify for files that match the supplied search criteria which locates source/binary and manuals sections for specified files which is to change the owner of a file unprivileged (regular) users who wish to change the group of a file can use this command that lets you tell the system how much or little access it should permit to a file which will create tape archives and add or extract files to a specified location will compress or expand the tar files used to estimate the file space usage, space used under a particular directory or files on a file system will report how much free disk space is available for each mount you have
Session 3	ps top jobs fg bg dmesg fdisk cfdisk lilo grub mkfs mkswap e2fsck umount mount kill uname who su	lets you check the status of processes that are running on your system display top CPU processes is a list the jobs that you are running in the background and in the foreground will continue a stopped job by running it in the foreground continues a stopped job in the background is used to examine or control the kernel ring buffer is a partition table manipulator is a curses based program for partitioning any hard disk drive installs a boot loader that will be activated next time you boot enables a user to have multiple operating systems on their computer, and choose which one to run when the computer starts is used to build a Linux file system on a device, usually a hard disk partition sets up a Linux swap area on a device or in a file is used to check a Linux second extended file system command detaches the file system(s) mentioned from the file hierarchy will mount a file system is used to send signals to running processes, for example to request the termination of this process returns system information in the structure pointed to command lets you display the users that are currently logged into your Unix computer system allows you to become a super user or another user
Session 4	rpm apt yum init inet.d rsyslog cron echo cat ifconfig route netstat	is a package management system is a free user interface that works with core libraries to handle the installation and removal of software is an interactive, automated update program which can be used for maintaining systems using rpm is the parent of all processes. Its primary role is to create processes from a script stored in the file /etc/inittab stores system startup and service management script is an open source program for forwarding log messages in an IP network for UNIX and Unix-like systems enables users to schedule jobs (commands or shell scripts) to run periodically at certain times or dates a line of text command is a standard Unix program used to concatenate and display files command allows the operating system to setup network interfaces and allow the user to view information about the configured network interfaces shows and manipulates the IP routing table shows network status
Session 5	ssh rcp ftp sftp webmin samba	secure shell remote file copy file transfer protocol secure file transfer protocal web based GUI for linux systems is an Open Source/Free Software suite that provides seamless file and print services to SMB/CIFS clients
Session 6	std pipe < > >> 2> sort nl wc cut awk paste join uniq head tail split tac sed	Linux-based Security Tool command you can take the output and pipe it to the output of another program will allow you to provide the data as input into the standard output Replace a file(will allow you to put the output into a file to allow viewing in your editor of choice) Append a file(will go to the end of existing and add on to the end of the file) will put the errors in the that file will sort results alpha first skips spaces displays lines, words, and chars will remove the number of spaces you input very good to manipulate data in columns allows you to see two files next to each other allows you to see the two files next to each other but with matching fields if in the same line order a way to locate any duplications will show 10 lines by default will show you the last 10 lines by default by default it will split it up into 1000 lines programmers attempt at humor cat backwards is tac, it will replace something in a file Sort for Stream Editor sed allows you to use pre-recorded commands to make changes to text
Session 7	iptables ip6tables filter nat mangle apache2	modifies the chains for IPv4 modifies the chains for IPv6 input / forward / output are in this section changes the ip addresses of packets as it goes out to the internet prerouting / output are in this section webserver program
Session 8	imap pop3 smtp sendmail newaliases postfix mailq spamassassin amavis maildir mbox	a MDA that keeps all the mail on the server a MDA deletes the mail when delivered is a MTA or a MUA is a MTA to allow the edited aliases to run correctly after editing is a MTA retrieves the mail that is waiting to be sent most common spam filtering tool a mail virus scanner a mail control center that is better then mbox a mail control center where everything is store as one
Session 9	bind9 nslookup dig dhcp3-server	internet domain name server name and ip address lookup for the server you have set up the specifc server name will give you the zone provide ip addresses to computers on the network, automaticly is configured
Session 10	mysql-server mysqld mysql-u root-p vlan iface ifup ifdown	is a relational database management system, that runs as a server providing multi-user access to a number of databases all the basic settings will connect you to the server stands for virtual LAN. A single VLAN-capable switch is able to participate in multiple LANs at once interfaces set ineterfaces to up set interfaces to down