03-05-2012
You should update the archive with only the files that have been changed between runs. Appends new files. Try not to remake the entire archive every time. Read the man page for tar, consider multiple volumes.
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LEARN ABOUT CENTOS
tar_append_tree
tar_extract_all(3) C Library Calls tar_extract_all(3)
NAME
tar_extract_all, tar_extract_glob, tar_append_tree - high-level tar archive manipulation functions
SYNOPSIS
#include <libtar.h>
int tar_extract_all(TAR *t, char *prefix);
int tar_extract_glob(TAR *t, char *globname, char *prefix);
int tar_append_tree(TAR *t, char *realdir, char *savedir);
VERSION
This man page documents version 1.2 of libtar.
DESCRIPTION
The tar_extract_all() function extracts all files from the tar archive associated with the TAR handle t into the path named by the prefix
argument.
The tar_extract_glob() function extracts all files matching the given glob pattern from the tar archive associated with the TAR handle t
into the path named by the prefix argument.
The tar_append_tree() function appends all files from the directory tree named by realdir to the tar archive associated with the TAR handle
t. The pathnames stored in the tar archive are modified by replacing realdir with savedir, so that the files will be extracted into
savedir.
RETURN VALUES
On successful completion, these functions will return 0. On failure, they will return -1 and set errno to an appropriate value.
ERRORS
These functions will fail under the same conditions that the tar_skip_regfile(), tar_extract_regfile(), opendir(), lstat(), or
tar_append_file() functions fail.
SEE ALSO
opendir(2), lstat(2), tar_skip_regfile(3), tar_extract_regfile(3), tar_append_file(3)
University of Illinois Jan 2001 tar_extract_all(3)