I've backed up several files to tape using tar, and wish to list those that have backed up.
% tar cvf /dev/rmt/2un /s_1/oradata/pgpub/config.ora
a /s_1/oradata/pgpub/config.ora 2 tape blocks
But when I go to list the files:
% tar tvf /dev/rmt/2un
tar: tape read error
What am I... (3 Replies)
:)
Hi,
I use the following command to search for a string in all the files in the directories and sub directories.
find . -type f -print | xargs grep bermun@cial.net
Can someone please cite a method wherin I can find the entries from a list of 300-500 *.gz files by modifying the above... (2 Replies)
Hi,
Does anyone know if it is possible to tar files larger than 2GB? The reason being is they want me to dump a single file (which is around 20GB) to a tape drive and they will restore it on a Solaris box. I know the tar have a limitation of 2GB so I am thinking of a way how to overcome this.... (11 Replies)
Hi all,
I have a tar file and inside that tar file is a folder with additional tar.gz files. What I want to do is look inside the first tar file and then find the second tar file I'm looking for, look inside that tar.gz file to find a certain directory. I'm encountering issues by trying to... (1 Reply)
I have a tar file that contains multiple .Z files. Hence I need to issue a tar command followed by a gzip command to fully extract the files. How do I do it in a single command?
What I'm doing now is
tar xvf a.tar (this will output 1.Z and 2.Z)
gzip -d *.Z (to extract 1.Z and 2.Z) (9 Replies)
Linux RHEL 5.4
It is easy to create a tarball when you have files same extension
For eg:
You want to tar all files with the extension .log . This is easy
tar -cvf diagnose.tar *.log
I have two files with different extensions .log and .sh :
error.log
myscript.sh
I want to create a... (5 Replies)
Hi,
I am using solaris 10 OS.Please help me out with the commands needed in below two scenarios.
1)How to delete the existing files in the tar file.
suppose i have a main tarfile named application.tar and it contains a file called ingres.tar.
what is the command to remove ingres.tar... (2 Replies)
I am just creating tar.gz file with comand tar -zcvf xyz.tar.gz /home/xyz/*
xyz folder contains thousands of files mostly .c, .cpp, etc..
I see that many times all the files are not zipped.
Many files(in hundreds) are abruptly left out.
What may be the reason for this and how to resolve... (10 Replies)
My unzip command doesn't work for files that are greater than 4GB. Consider my file name is unzip -p -a filename.zip, the command doesn't work since the size of the file is larger. I need to know the corresponding 7z command for the same. This is my Unix shell script program:
if
then
... (14 Replies)
Discussion started by: chandraprakash
14 Replies
LEARN ABOUT V7
tar
TAR(1) General Commands Manual TAR(1)NAME
tar - tape archiver
SYNOPSIS
tar [ key ] [ name ... ]
DESCRIPTION
Tar saves and restores files on magtape. Its 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 the command are file or directory names specify-
ing which files are to be dumped or restored. In all cases, appearance of a directory name refers to the files and (recursively) subdirec-
tories 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.
0,...,7 This modifier selects the drive on which the tape is mounted. The default is 1.
v Normally tar does its work silently. The v (verbose) option causes it to type the name of each file it treats preceded by the
function letter. With the t function, v gives more information about the tape entries than just the name.
w causes tar to print 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 performed. Any other input means don't do it.
f causes tar to use the next argument as the name of the archive instead of /dev/mt?. If the name of the file is `-', tar writes
to standard 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 causes tar to use the next argument as the blocking factor for tape records. The default is 1, the maximum is 20. 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 to not restore the modification times. The mod time will be the time of extraction.
FILES
/dev/mt?
/tmp/tar*
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 b option should not be used with archives that are going to be updated. The current magtape driver cannot backspace raw magtape. If
the archive is on a disk file the b option should not be used at all, as updating an archive stored in this manner can destroy it.
The current limit on file name length is 100 characters.
TAR(1)