Term
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Definition
| lets you configure your interface |
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Term
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Definition
| shows the status of network interfaces |
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Term
| Command to toggle Interfaces On or OFF |
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Definition
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Term
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Definition
| lets you see routing table or create static routes |
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Term
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Definition
| intended to replace ifconfig, but not very popular |
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Term
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Definition
| "swiss army knife" Does a lot but sucks at doing it all |
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Term
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Definition
| shows all connections to your machine |
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Term
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Definition
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Term
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Definition
| shows info about your network interface |
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Term
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Definition
| protocol analyzer "sniffer” text based. runs in shell, monitors network and reports every packet that it sees. Like Wireshark |
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Term
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Definition
| similar to TCPdump: diagnosis tool that lets you analyze data packets through a network interface. Like Wireshark. |
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Term
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Definition
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Term
| ZoneFile Record type: SOA |
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Definition
| Start of Authority: defines the Domain |
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Term
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Definition
| Name Server: Name of one of the DNS servers for this domain |
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Term
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Definition
| Mail Exchanger: name and priority of a mail server for this domain |
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Term
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Definition
| Address: IP address of a computer |
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Term
| ZoneFile Record type: PTR |
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Definition
| Pointer: Name of a computer |
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Term
| ZoneFile Record type: CNAME |
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Definition
| Canonical Name: alias name for a computer |
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Term
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Definition
| Holds the address and hostname information within that domain. |
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Term
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Definition
| the way to zone file is distributed to the other servers. Uses a serial number at the top of the zone file, and Name servers compare it to decide when to update. |
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Term
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Definition
| shows who your names servers are, also adds the search path “.byui.edu” search path is appended |
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Term
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Definition
| you tell Linux where it should go to resolve names, if it says [ files dns ] then it will go to local host file first, then to DNS, order matters. |
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Term
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Definition
| test your name servers; replaced [nslookup] |
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Term
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Definition
| test your name servers, replaced [nslookup] (dig does not append the search path) |
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Term
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Definition
| test your name servers older less powerful command |
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Term
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Definition
| used to Linux to Linux machines, allows you to mount a remote file system into any directory tree. |
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Term
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Definition
| where you create permanent export directories used by NFS. export is like sharing on the network. |
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Term
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Definition
| can mount from [fstab /home/marko] and mount it |
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Term
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Definition
| lets you find out which users have a file open |
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Term
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Definition
Common Internet File System
Lets NetBIOS run on top of TCPIP |
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Term
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Definition
| Server Message Block: protocol that lets Linux communicate with Windows; like mapping network drives [ NetBIOS //server/share] |
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Term
| [testparm] (samba command) |
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Definition
| does a syntax check on /etc/samba/smb.conf |
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Term
| [nmblookup] (samba command) |
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Definition
| displays registered names of a host |
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Term
| [smbclient] (samba command) |
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Definition
| lets you connect Linux client to the windows server |
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Term
| [smbstatus] (samba command) |
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Definition
| lists currently existing connections to the samba server |
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Term
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Definition
PORT 631
Print Server
http://localhost:631 |
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Term
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Definition
| Postscript Printer Definition: postscript = open standard for printing files |
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Term
| [lpadmin] (Printing Command) |
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Definition
| create printers from the cmd prompt |
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Term
| [lpoptions] (Printing Command) |
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Definition
| to change properties of a printer |
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Term
| [lpr] or [lp] (Printing Command) |
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Definition
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Term
| [lpq] or [lpstat] (Printing Command) |
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Definition
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Term
| [lprm] or [cancel] (Printing Command) |
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Definition
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Term
| NIS: Network Information Services |
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Definition
| do domain wide authentication Services, replicated critical files only works on Linux and Unix. Originally called "Yellow Pages"(YP) |
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Term
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Definition
| Like NIS but works on all platforms. It is COMPATIBLE WITH WINDOWS ACTIVE DIRECTORY |
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Term
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Definition
| canonical name: user name printer file or directory. (lowest level name) |
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Term
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Definition
| organizational unit: group users together into an organization (engineering, IT, finance) |
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Term
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Definition
| domain component: where you specify your domain, all orgs belong to BYUI +++requires two components dc=byui, dc=edu+++ |
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Term
| MIME: Multipurpose Mail Extension |
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Definition
| way we can determine the type of a file, what kind of data and what should we use to open it. (replacement for file types such as .txt .png .jpeg etc) |
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Term
| SMTP: Simple Mail Transfer Protocol |
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Definition
| Used to SEND mail ONLY not to recieve |
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Term
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Definition
| Mail transfer agent: used to send the mail to its destination or destination server uses IMAP and POP. |
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Term
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Definition
| Mail delivery agent: compare the mail to a number of rules, and decide what to do with it. so it Filters. Postfix and Sendmail. |
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Term
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Definition
| Mail user agent: your mail client. Examples: Novell Evolution, KMail, Mozilla Thunderbird, Mutt(NO GUI), Pine (NO GUI), mail(NO GUI). |
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Term
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Definition
| MTA's (Mail Transfer Agents) that distribute mail to clients from server |
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Term
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Definition
| MDA (mail delivery agent) newer, easier to config and manage. Is compatible with Sendmail |
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Term
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Definition
| Old MDA (Mail Delivery Agent) Old and reliable, but difficult to manage |
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Term
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Definition
| setup file in /home/.procmailrc to configure sorting options |
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Term
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Definition
| super daemon: listens on a port and starts a daemon when a request for it comes in. (xinetd is the improved version) |
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Term
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Definition
| adds security to other less secure daemons, telnet daemon is insecure, so instead of rewriting, use TCP wrapper which wraps itself around it adding more security, uses host.allow and host.deny statements |
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Term
| [hosts.allow] and [hosts.deny] |
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Definition
| statements used by the TCP wrapper similar to access control lists |
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Term
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Definition
| More secure version of Telnet with more features. You can copt files and use tunneling of other protocols within the SSH) [ssh -x] allows x server to run across the server |
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Term
| DHCP (Dynamic Host Configuration Protocol) |
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Definition
| assigns a client a network/host address. Uses /etc/dhcpcd.conf and etc/sysconfig/dhcpcp |
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Term
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Definition
| Web Server; home page is in /srv/www/htdocs. To START [rcapache2 start] and STOP [rcapache2 stop] |
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Term
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Definition
| which pages are currently in physical memory |
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Term
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Definition
| number of pages in current memory |
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Term
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Definition
| when you spend all time moving pages between physical and virtual memory and don’t have any time to get real work done |
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Term
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Definition
| program and data references within a process tend to cluster. ( even though I have a process that is this long, how much do i really need right now) |
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Term
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Definition
| physical bit: 0=(in physical memory) 1= (in virtual memory) |
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Term
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Definition
| modified bit, to know if we need to write something before you reuse the frame. if both aren’t unmodified then replace the LRU file (least recently used) WHO THE L R U? |
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Term
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Definition
| section of the program that we need to protect with a semaphore,We used to lock at beginning and unlock at the end. Instead just isolate the critical code |
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Term
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Definition
| you have two processes concurrently and their contending with each other over some resource, ex: create a Boolean and set it true and other program sets it false, each changes truth value. |
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Term
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Definition
| if two processes are running at the same time running concurrently I get different results than if they were running separately |
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Term
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Definition
| signaling technique that will lock resources to a process to prevent deadlock, or any problems. (sends our semwait and semsignal codes) |
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Term
| Conditions for Deadlock to Occur |
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Definition
| Mutual Exclusion, Hold-and-Wait, and No Preemption. |
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Term
| mutual exclusion (deadlock causers) |
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Definition
| only one process can do it at a time (printing, updating files) |
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Term
| hold-and-wait (deadlock causers) |
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Definition
| if a process gets a resource it can hold it until it gets the one it needs. |
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Term
| no preemption (deadlock causers) |
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Definition
| resource cannot be removed from a process |
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Term
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Definition
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Term
| The Whole Shebang (bash scripting) |
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Definition
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Term
| parameters (bash scripting) |
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Definition
| get stored in $and, $1, or $2 variables |
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Term
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Definition
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Term
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Definition
| Similar to WHILE LOOP but does the check at the end. |
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Term
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Definition
< is lexicographical; it compares the first character, 12<2 is TRUE (1<2(first letter))
-lt is numerical |
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