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Full Discussion: cowardly refusing to create an empty archive
Top Forums Shell Programming and Scripting cowardly refusing to create an empty archive Post 302574533 by Corona688 on Thursday 17th of November 2011 12:31:29 PM
Old 11-17-2011
Why do you have all your commands in backticks? At best the backticks are useless, at worst they try to run tar's error messages as commands and cause their own errors.

Don't mv the file unless you know tar succeeded. Check first.

Don't mv the file unless you know tar did anything. Check first.

You can't use -r and -z at the same time, compress it after.

And certainly don't delete the files unless you know they're in the archive!

Code:
func()
{
        cd ${dir}
        if ! find . -mtime +90 -type f -name "*.txt" | xargs -r tar -rvf filename.tar
        then
                echo "Couldn't archive" >&2
                return 1
        fi

        [ -f "filename.tar" ] || return 1
        gzip "filename.tar" || return 1
        if ! mv -f filename.tar.gz $archive
        then
                echo "Moving Unsuccessful"
                return 1
        fi

        find . -mtime +90 -type f -name "*.txt" -exec rm '{}' ';'
}

 

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LEARN ABOUT PHP

shape_tar

SHAPE_TAR(1)						      General Commands Manual						      SHAPE_TAR(1)

NAME

       shape_tar - shapeTools RMS bundle up subsystem in a tar or shar archive

SYNOPSIS

	shape tar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>]

       shape shar[VERSIONS=<version_selection_rule>] [ARCHIVE=<filename>]

DESCRIPTION

       Shape tar and shape shar create a tar or a shar archive containing all source components of the current node in the system tree. All source
       components listed in the COMPONENTS macro in the Makefile and the release identification file (VERSIONFILE) are	written  to  the  archive.
       Components of subsystems are not included in the archive file.

       The  VERSIONS  macro  may  be  set  to  specify a version selection rule to be active during archive file creation. Default is most_recent,
       selecting the most recent version of each component. See shape_stdrul(7) or the $(SHAPELIBPATH)/stdrules for other possible  settings.  You
       may also use self defined version selection rules as VERSIONS.

       ARCHIVE	is  the base name of the file where the output shall be written to. Default is $(SUBSYSTEMNAME). The output file gets the filename
       extension .tar (resp. .shar).  When ARCHIVE=- is given, data will be written to standard output.

SEE ALSO

       shape_RMS(1), shape_stdrul(7)

FILES

       $(SUBSYSTEMNAME).tar $(SUBSYSTEMNAME).shar

20.7.119															      SHAPE_TAR(1)
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