12-01-2007
I found this in the info page for gnu tar:
Quote:
Verbose output appears on the standard output except when an archive is being written to the standard output, as with ‘tar --create --file=- --verbose’ (‘tar cfv -’, or even ‘tar cv’—if the installer let standard output be the default archive). In that case tar writes verbose output to the standard error stream.
So leaving off the f option and the /dev/stdout would have still sent the archive to the pipeline and the listing to the terminal. So yes, you do have a garbled archive. I don't see an obvious way to script your proposed solution. But worse, I see acouple of potential problems with it...
Problem one: "/home" probably appears somewhere in the good part of the archive and your solution would then drop bytes from the archive.
Problem two: The output of the listing was probably buffered because it was going to a non-tty, so blocks of lising may be interspersed and you may have lines split between blocks. So "/home/this/that" might not have fit in the buffer. So "/home/th" was put in and the buffer was written. Then "is/that{lf}" is placed in the buffer. But meanwhile output buffers of the archive are being written.
Sorry for the bad news, but I doubt that the archive can be salvaged.
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi all,
Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this?
Your help is greatly appreciated!!
Best Regards,
Naveen. (1 Reply)
Discussion started by: naveendronavall
1 Replies
2. Shell Programming and Scripting
I am creating ASCII file from Oracle procedure into Unix box.
I undertstand there is NO CRLF as I am writing it into one complete string .. but need to know what is best way to format the file with 80bytes per line only before handing over to another program.
Thanks in advance
regards... (14 Replies)
Discussion started by: u263066
14 Replies
3. UNIX for Dummies Questions & Answers
Hi All,
I want to find zero byte files in the given folder for the given day.
I know we can use find . -size 0 -mtime 0
But is there an option for file creation.?
ls -lart | grep ' 0 Apr 24' will also work.
Also is there any alternative using awk ?
I want to know how to use awk in... (1 Reply)
Discussion started by: preethgideon
1 Replies
4. Shell Programming and Scripting
Hi,
I have packed fields for which I am trying to print bytes. when I try cut -b2 it does print the 2nd byte besides that it also prints additional byte that I am not aware off:confused: data looks something like this
Input:
135
246
when I try cut -b2 it gives me
30
4A
but I... (12 Replies)
Discussion started by: ahmedwaseem2000
12 Replies
5. Shell Programming and Scripting
While running script I am getting an error like
Few lines in data are not being processed.
After googling it I came to know that adding such line would give some memory to it
ini_set("memory_limit","64M");
my input file size is 1 GB.
Is that memory limit is based on RAM we have on... (1 Reply)
Discussion started by: elamurugu
1 Replies
6. Programming
Hi,
If I want to copy a 1024 byte data stream in to the target location in 3-bytes chunk, I guess I can use the following script.
dd bs=1024 count=3 if=/src of=/dest
But, I would like to know, how to do it via a C program. I have tried this with memcpy(), that did not help. (3 Replies)
Discussion started by: royalibrahim
3 Replies
7. UNIX for Dummies Questions & Answers
Hello guys. I really hope someone will help me with this one..
So, I have to write this script who:
- creates a file home/student/vmdisk of 10 mb
- formats that file to ext3
- mounts that partition to /mnt/partition
- creates a file /mnt/partition/data. In this file, there will... (1 Reply)
Discussion started by: razolo13
1 Replies
8. Shell Programming and Scripting
hello,
suppose, entered input is of 1-40 bytes, i need it to be converted to 40 bytes exactly.
example: if i have entered my name anywhere between 1-40 i want it to be stored with 40 bytes exactly.
enter your name:
donald duck (this is of 11 bytes)
expected is as below - display 11... (3 Replies)
Discussion started by: shravan.300
3 Replies
9. Programming
say that i have strings that end in "text"
foo.9.text, bar.10.text, baz.11.text
and i want a C function to chop off the last four characters and replace each string with a '\0'; obviously with error-checking. Any ideas?
TIA! (7 Replies)
Discussion started by: Gary Kline
7 Replies
LEARN ABOUT LINUX
shtool-tarball
SHTOOL-TARBALL.TMP(1) GNU Portable Shell Tool SHTOOL-TARBALL.TMP(1)
NAME
shtool-tarball - GNU shtool command for rolling standardized tarballs
SYNOPSIS
shtool tarball [-t|--trace] [-v|--verbose] [-o|--output tarball] [-c|--compress prog] [-d|--directory directory] [-u|--user user]
[-g|--group group] [-e|--exclude pattern] path [path ...]
DESCRIPTION
This command is for rolling input files under path into a distribution tarballs which can be extracted by tar(1).
The four important aspects of good open source software tarballs are: (1) unpack into a single top-level directory, (2) top-level directory
corresponds to the tarball filename, (3) tarball files should be sorted and (4) arbitrary names for file owner and group.
OPTIONS
The following command line options are available.
-v, --verbose
Display some processing information.
-t, --trace
Enable the output of the essential shell commands which are executed.
-o, --output tarball
Output tarball to file tarball.
-c, --compress prog
Pipe resulting tarball through compression program prog.
-d, --directory directory
Sets the top-level directory into which the tarball unpacks. By default it is tarball without the trailing ".tar.*" extension.
-u, --user user
The user (owner) of files and directories in the tarball to user.
-g, --group group
The group of files and directories in the tarball to group.
-e, --exclude pattern
Exclude files and directories matching comma-separated list of regex pattern from the tarball. Directories are expanded before the
filtering takes place. The default filter pattern is ""CVS,\.cvsignore,\.svn,\.[oa]$"".
EXAMPLE
# Makefile.in
dist:
...
V=`shtool version -d short ...`;
shtool tarball -o foobar-$$V.tar.gz -c 'gzip -9'
-u bar -g gnu -e 'CVS,.cvsignore' .
HISTORY
The GNU shtool tarball command was originally written by Ralf S. Engelschall <rse@engelschall.com> in 1999 for GNU shtool.
SEE ALSO
shtool(1), tar(1), compress(1).
18-Jul-2008 shtool 2.0.8 SHTOOL-TARBALL.TMP(1)