Need help understanding 'tar'

Need help understanding 'tar'

Post by PAUL ZEEM » Fri, 05 Nov 1993 02:46:06

Hi all!
        I hate to bother you with what is probably a very stupid question, but
I have recently 'ftp'ed a file that has a .tar extension.  I know that tar
has something to do with storing files on tape, though i'm not exactly sure
what.  The problem I'm having is, I can't seem to un-tar it.  I always get
I/O error, or nothing at all.  The UNIX text I have (UNIX for the Impatient)
tells me next to nothing about tar.
        I'm not sure if I'm using a tape drive or a disk drive here at the
school, and that may be my problem

        If you could e-mail me some possible suggestions as how to solve my
problem, it would be greatly appreciated.

"That is the secret.  If there is one." -Neil Peart,Counterparts Press Relesas

<> Paul Zeeman                    | All of us get lost in the darkness,     <>

<> Computer Science Department    | All of us do time in the gutter,        <>
<> University Of Western Ontario  | Dreamers turn to look at the cars.      <>
<> London, Ontario, Canada        | Niel Peart, The Pass - 1989             <>
<> The opinons expressed are my own, so don't complain to the universtiy!   <>
<><> BLUE JAYS, World Champions 1992,1993,? <><><><><><><><><><><><><><><><><>


Need help understanding 'tar'

Post by Todd D. Ta » Sat, 06 Nov 1993 08:39:50

To uncompress a file with a .tar extention, try:
tar xvf <filename>


U.N.C. Department of Computer Science Student Facilities Staff


1. NewB needs help understanding 'netstat' output

I'm fairly new at Linux, so I really don't quite know what I'm doing,
Occasionally I do "netstat -tuln" just to see that things don't change,
but today this is what I got.....

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address
tcp        0      0 *
----The following line (Port 515) didn't use to be there, but I've
installed a printer -- so that makes sense
tcp        0      0   *
tcp        0      0*
tcp        0      0   *
tcp        0      0   *
tcp        0      0  *
tcp        0      0    *
udp        0      0 *
udp        0      0*
udp        0      0   *
udp        0      0*
udp        0      0   *
udp        0      0   *
---The following (port 635) USED to be "" why would it
udp        0      0   *

(rpc.statd owns the last one and the ones on ports 32768)
Running red hat (basically default workstation install), using
masquerading for a home network (DHCP via cable). This box is also
running samba, imap, and sendmail for the internal network.  Samba &
imap are bound to the internal i/f by thier config files & tcp wrappers.
Sendmail will not relay from an outside domain. Also,  these ports are
closed to the outside i/f by firewall rules and scanning services have
confirm them closed.

I just can't think of anything I might have done to remove a service
from 628 (I'm not even smart enough to know what it was), let alone add
something to port 635 (I don't know what rpc.statd is).

Any help at understanding this?


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