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Communication/Network Commands

chfn change the info displayed about you when you are fingered
finger userID displays login information about the userID indicated
ftp host FTP client for connecting to host
ifconfig display & configure network interface (like ipconfig)
host ip/name performs DNS lookup on IP or name
ifup devicename activates devicename (usually primary NIC card: eth0)
ifdown devicename deactivates devicename (usually primary NIC card: eth0)
lynx text based WWW browser. q exits the program
mesg option sets your account to accept a talk requests (y or n). See talk
netstat prints various network information (try netstat --inet -a)
nslookup ip/name resolves the name (if IP is entered) or IP (if name is entered)
ping host sends ping packet (ICMP echo request) to host
quota displays disk usage and limits
route show and manipulate IP routing tables. No switch shows info.
talk userID initiates a talk request with userID (on the same system)
scp user@host:/remote/file
downloads the file /remote/file from remote host through
user and saves it locally to localdir (to upload a file: scp
localfile user@host:/remote/file)
ssh host ssh client for connecting to host
traceroute host displays route taken by packets to reach to host
who displays information on all users currently online
w displays more information than “who” of online users
wget URL downloads the file specified with URL (either http:// or ftp://).
In order to mirror a URL: “wget –m –t3 URL <- span="">o logfile.log>”

whois domain gives domain registration information about domain


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