Don't have a fully modern mac to check that on right now, but I suspect not, since it uses clock_gettime, a POSIX-compliant feature which the older version of OSX I have available definitely doesn't have. It was developed on Linux and Solaris so may need GNU features too.
I also checked in the fink repository, don't see it.
I suppose if the network is guaranteed to be slower than the tape you could just cat it, it'll never catch up until the tape's done. cat shouldn't care about the file size changing, it goes until EOF whatever that may be. Give the tape a head start to build up some steam.
Hi there
In my organisation we have a solaris network with /home being automounted from /export/home on a central file server (usual stuff) however, the guy who originally set this up only allocated 3gb to /export/home and now we are really struggling for space. I have a new 18gb disk installed... (3 Replies)
Hi, Im trying to take a database backup. one of the files is 26 GB. I am using cp -pr to create a backup copy of the database. after the copying is complete, if i do du -hrs on the folders i saw a difference of 2GB.
The weird fact is that the BACKUP folder was 2 GB more than the original one!
... (1 Reply)
I have a zipped file that is ~ 10GB. I tried tarring it off to a tape, but I receive:
tar: <filename> too large to archive. Use E function modifier.
The file is stored on a UFS mount, so I was unable to use ufsdump.
What other options do I have? (I don't have a local file system large... (3 Replies)
Hi All
I am trying to copy files present in a partition (server 2) which is mounted to a different server (server 1) as tape drive is connected to it. I ran the below command to copy files within a partition:
svr01:root:/sunfileserver> tar -cvf *
a <foldername>/<filename>/<filename>
a... (4 Replies)
We have 3 Unix servers all running SVR4 Unix 1.4. I have no problems copying files to and from 2 of the servers using either the rcp command or ftp but when i come to transfer large files to the third server the copy gives up part way through and crashes this server. Copying smaller files using RCP... (7 Replies)
Hi,
I have a process which duplicates files for different environments. As the files arrive, my script (korn shell) makes copies of them (giving a unique name) and then renames the original file so that my process won't get triggered again.
I don't like it either, but it's what we were told to... (4 Replies)
I have a large file that I append entries to the end of every few seconds. Its grown to >150MB. Its basically a log file but a perl script is writing to it. I need to make a copy of it to a new directory. I realize the latest entries occuring while the copy is taking place will not be recorded... (1 Reply)
Hi All,
I have a big file which looks like this:
abc 34.32
cdf 343.45
computer 1.34
ladder 2.3422
I have some 100000 .TXT files which look like this:
computer
cdf
align
I have to open each of the text files and read the words from the text files. Then I have to look into that... (2 Replies)
I am using a 4mm tape to backup my Unix system. However, I wanted to make a copy all of the files and archive headers (or just the archive headers if that's possible) created on one of my tapes to another 4mm tape. I only have one tape drive. Is there a command that will complete such task? ... (1 Reply)
Hello,
I'm new to this forum and like to first of all say hello to everyone.
I've got a really annoying problem at the moment.
I'm trying to rsync some files (about 200MB with one file of 120MB) from a Raspberry PI with raspbian to a debian server via rsync.
This procedure is stored in a... (3 Replies)
Discussion started by: wex_storm
3 Replies
LEARN ABOUT FREEBSD
tcopy
TCOPY(1) BSD General Commands Manual TCOPY(1)NAME
tcopy -- copy and/or verify mag tapes
SYNOPSIS
tcopy [-cvx] [-s maxblk] [src [dest]]
DESCRIPTION
The tcopy utility is designed to copy magnetic tapes. The only assumption made about the tape layout is that there are two sequential EOF
marks at the end. By default, the tcopy utility will print information about the sizes of records and files found on the /dev/sa0 tape, or
on the tape specified by the src argument. If a destination tape is also specified by the dest argument, a copy of the source tape will be
made. The blocking on the destination tape will be identical to that used on the source tape. Copying a tape will yield the same program
output as if just printing the sizes.
The following options are available:
-c Copy src to dest and then verify that the two tapes are identical.
-s maxblk Specify a maximum block size, maxblk.
-v Given the two tapes src and dest, verify that they are identical.
-x Output all informational messages to the standard error instead of the standard output. This option is useful when dest is given
as /dev/stdout.
SEE ALSO mt(1), mtio(4)HISTORY
The tcopy command appeared in 4.3BSD.
BUGS
Writing an image of a tape to a file does not preserve much more than the raw data. Block size(s) and tape EOF marks are lost which would
otherwise be preserved in a tape-to-tape copy.
End of data (EOD) is determined by two sequential EOF marks with no data between them. There used to be old systems which typically wrote
three EOF's between tape files. The tcopy utility will erroneously stop copying early in this case.
When using the copy/verify option -c, tcopy does not rewind the tapes prior to start. A rewind is performed after writing, prior to the ver-
ification stage. If one does not start at the beginning-of-tape (BOT) then the comparison may not be of the intended data.
BSD December 20, 2006 BSD