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Top Forums UNIX for Beginners Questions & Answers Tar command generation with Find Post 302996190 by royinfo.alain on Friday 21st of April 2017 09:14:12 AM
Old 04-21-2017
Tar command generation with Find

Hello,

I'm trying to generate a TAR command and fill it with the result of a Find command. What I did is not elegant and I'm sure that it can be in a different way to be faster.

I need to Find all files with an extension to ".sf". If a file is found, I need to replace the extension ".sf" to ".sfd" and see if this file exist.. if yes, this is the file (.sfd) that I need to backup, by using the Tar command. The goal is to backup all existing ".sfd" related to a ".sf" file in one big Backup file (TAR).

Below the code that I did.

Code:
export tar_cmd='"tar -cvf - '

# Extract .sfd related to .sf files

find *.sf -type f -mtime -$nb_days | sed -e "s/.sf/.sfd/g" | while read FileName
do
[ -f $FileName ] && export tar_cmd=$tar_cmd" "$FileName
done

export tar_cmd=$tar_cmd' | gzip > $MAITUT/BCK_DATA_sfd.tar.gz"'

# The command below will Backup all .SFD file related to .idx
$tar_cmd

 

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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)
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