06-04-2009
Piping to /dev/rmt0 tape ?
I am trying to find a way to do the following on an AIX 4.2 with Korn:
tar cvfpdl - . | compress > /dev/rmt0
The /dev/rmt0 is the device we use when we tar directly to it.
I want to compress a folder's content to tape. Our current TAR does not have compression at all. We only have 'compress' as compression command.
When I use the command above, it shows it started to TAR some files but then it failes with a message:
A system call received a parameter that is not valid.
Also, I read there is a GNU tar with compression but do not know if it would work on an 4.2 AIX
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LEARN ABOUT CENTOS
th_get_gid
th_get_pathname(3) C Library Calls th_get_pathname(3)
NAME
th_get_pathname, th_get_uid, th_get_gid, th_get_mode, th_get_crc, th_get_size, th_get_mtime, th_get_devmajor, th_get_devminor,
th_get_linkname - extract individual fields of a tar header
TH_ISREG, TH_ISLNK, TH_ISSYM, TH_ISCHR, TH_ISBLK, TH_ISDIR, TH_ISFIFO - determine what kind of file a tar header refers to
TH_ISLONGNAME, TH_ISLONGLINK - determine whether the GNU extensions are in use
SYNOPSIS
#include <libtar.h>
char *th_get_linkname(TAR *t);
char *th_get_pathname(TAR *t);
mode_t th_get_mode(TAR *t);
uid_t th_get_uid(TAR *t);
gid_t th_get_gid(TAR *t);
int th_get_crc(TAR *t);
off_t th_get_size(TAR *t);
time_t th_get_mtime(TAR *t);
major_t th_get_devmajor(TAR *t);
minor_t th_get_devminor(TAR *t);
int TH_ISREG(TAR *t);
int TH_ISLNK(TAR *t);
int TH_ISSYM(TAR *t);
int TH_ISCHR(TAR *t);
int TH_ISBLK(TAR *t);
int TH_ISDIR(TAR *t);
int TH_ISFIFO(TAR *t);
int TH_ISLONGNAME(TAR *t);
int TH_ISLONGLINK(TAR *t);
VERSION
This man page documents version 1.2 of libtar.
DESCRIPTION
The th_get_*() functions extract individual fields from the current tar header associated with the TAR handle t.
The TH_IS*() macros are used to evaluate what kind of file is pointed to by the current tar header associated with the TAR handle t.
The TH_ISLONGNAME() and TH_ISLONGLINK() macros evaluate whether or not the GNU extensions are used by the current tar header associated
with the TAR handle t. This is only relevant if the TAR_GNU option was used when tar_open() was called.
SEE ALSO
tar_open(3)
University of Illinois Jan 2001 th_get_pathname(3)