10 More Discussions You Might Find Interesting
1. AIX
Hi all
The situation is as follows:
We need to take an mksysb image from an AIX 6.1 server. From some reason (irrelevant to this discussion) this server does not have access to a local CD-ROM or a tape drive. We do have another server with AIX 6.1 (but different technology level) which got access... (1 Reply)
Discussion started by: abohmeed
1 Replies
2. UNIX for Dummies Questions & Answers
Hi all,
I've got two HP machines running HP-UX 11.31 and would like to remotely backup one server onto another server's tape unit using the cpio command.
The two servers use a secured communication channel, i.e ssh.
Kindly help,
Koketso (1 Reply)
Discussion started by: Koketso
1 Replies
3. Solaris
Hello all,
I'm trying to backup some files on a solaris 10 machine to the remote tape drive connected to another solaris 10 machine.
I have set up rsh to allow for password-less connection between the servers, but I'm not able to write to the tape with the command:
root@sdp4a>tar cvf... (1 Reply)
Discussion started by: kerrygold
1 Replies
4. Solaris
hello guys,
am trying to save a file file1 to a remote tape drive using tar and i get a permission denied error as shown below:
server1%tar cvf - file1 | rsh server2 dd of=/dev/rmt/1m conv=sync
a file1 1883905K
permission denied
since server2 requires login username and password, i see in... (3 Replies)
Discussion started by: nom
3 Replies
5. Solaris
I am currently using tar to backup a server that has 9gb of data.
This is fine and works fine, as part of this I send the backup to a remote tape on a remote server using rsh..
This is not very secure though is it?
Whats the best idea here - is there another way I should do this to be more... (1 Reply)
Discussion started by: frustrated1
1 Replies
6. Filesystems, Disks and Memory
Hi all!
I'm new in this forum. I need to ask a few question.
I would like to know if it is possible to use dump and tar command for backup in one tape.
If it is possible, how do I restore it back?
Fyi, I'm using the Digital Unix 4.0E OSF/1 box. (old box) :-)
Thank you. :) (0 Replies)
Discussion started by: apokobondo
0 Replies
7. UNIX for Advanced & Expert Users
Hi all!
I'm new in this forum. I need to ask a few question.
I would like to know if it is possible to use dump and tar command for backup in one tape.
If it is possible, how do I restore it back?
Fyi, I'm using the Digital Unix 4.0E OSF/1 box. (old box) :-)
Thank you. :) (0 Replies)
Discussion started by: apokobondo
0 Replies
8. Shell Programming and Scripting
i have two main servers which are both hpux. the problem is that i only have single dat drive to use with my backup (using tar command). it always takes me alot of time to perform this activity since the backup can only be done one at a time. there are other hpux box with a dat drive attached on... (3 Replies)
Discussion started by: inquirer
3 Replies
9. UNIX for Advanced & Expert Users
I am trying to perform a remote tape backup from one SCO openserver to another remote SCO Openserver which happens to have a tape drive configured.
I have added entries into host.equiv and .rhosts on the tape drive server:
prodution_server root # This is equivalent to the hostname and... (1 Reply)
Discussion started by: cstovall
1 Replies
10. UNIX for Advanced & Expert Users
I tried to buckup some oracle archive logs (from a solaris machine) to a remote tape (in a HP-UX machine).
I added the solaris machine name and user to .rhosts, and i tried to use this commande :
tar cvf HPhost:/dev/rmt/0mn /u01/*
The probleme that it gives:
HPhost:/dev/rmt/0mn : No such... (1 Reply)
Discussion started by: lasgaa
1 Replies
TAR(1) General Commands Manual TAR(1)
NAME
tar - tape archiver
SYNOPSIS
tar [ key ] [ name ... ]
DESCRIPTION
Tar saves and restores multiple files on a single file (usually a magnetic tape, but it can be any file). Tar's actions are controlled by
the key argument. The key is a string of characters containing at most one function letter and possibly one or more function modifiers.
Other arguments to tar are file or directory names specifying which files to dump or restore. In all cases, appearance of a directory name
refers to the files and (recursively) subdirectories of that directory.
The function portion of the key is specified by one of the following letters:
r The named files are written on the end of the tape. The c function implies this.
x The named files are extracted from the tape. If the named file matches a directory whose contents had been written onto the tape,
this directory is (recursively) extracted. The owner, modification time, and mode are restored (if possible). If no file argument
is given, the entire content of the tape is extracted. Note that if multiple entries specifying the same file are on the tape, the
last one overwrites all earlier.
t The names of the specified files are listed each time they occur on the tape. If no file argument is given, all of the names on
the tape are listed.
u The named files are added to the tape if either they are not already there or have been modified since last put on the tape.
c Create a new tape; writing begins on the beginning of the tape instead of after the last file. This command implies r.
The following characters may be used in addition to the letter which selects the function desired.
o On output, tar normally places information specifying owner and modes of directories in the archive. Former versions of tar,
when encountering this information will give error message of the form
"<name>/: cannot create".
This modifier will suppress the directory information.
p This modifier says to restore files to their original modes, ignoring the present umask(2). Setuid and sticky information will
also be restored to the super-user.
0, ..., 9 This modifier selects an alternate drive on which the tape is mounted. The default is drive 0 at 1600 bpi, which is normally
/dev/rmt8.
v Normally tar does its work silently. The v (verbose) option makes tar print the name of each file it treats preceded by the
function letter. With the t function, the verbose option gives more information about the tape entries than just their names.
w Tar prints the action to be taken followed by file name, then wait for user confirmation. If a word beginning with `y' is given,
the action is done. Any other input means don't do it.
f Tar uses the next argument as the name of the archive instead of /dev/rmt?. If the name of the file is `-', tar writes to stan-
dard output or reads from standard input, whichever is appropriate. Thus, tar can be used as the head or tail of a filter chain.
Tar can also be used to move hierarchies with the command
cd fromdir; tar cf - . | (cd todir; tar xf -)
b Tar uses the next argument as the blocking factor for tape records. The default is 20 (the maximum). This option should only be
used with raw magnetic tape archives (See f above). The block size is determined automatically when reading tapes (key letters
`x' and `t').
l tells tar to complain if it cannot resolve all of the links to the files dumped. If this is not specified, no error messages are
printed.
m tells tar not to restore the modification times. The modification time will be the time of extraction.
h Force tar to follow symbolic links as if they were normal files or directories. Normally, tar does not follow symbolic links.
B Forces input and output blocking to 20 blocks per record. This option was added so that tar can work across a communications
channel where the blocking may not be maintained.
C If a file name is preceded by -C, then tar will perform a chdir(2) to that file name. This allows multiple directories not
related by a close common parent to be archived using short relative path names. For example, to archive files from /usr/include
and from /etc, one might use
tar c -C /usr include -C / etc
Previous restrictions dealing with tar's inability to properly handle blocked archives have been lifted.
FILES
/dev/rmt?
/tmp/tar*
SEE ALSO
tar(5)
DIAGNOSTICS
Complaints about bad key characters and tape read/write errors.
Complaints if enough memory is not available to hold the link tables.
BUGS
There is no way to ask for the n-th occurrence of a file.
Tape errors are handled ungracefully.
The u option can be slow.
The current limit on file name length is 100 characters.
There is no way selectively to follow symbolic links.
When extracting tapes created with the r or u options, directory modification times may not be set correctly.
7th Edition May 12, 1986 TAR(1)