bash - Creating incremental backup with tar - --listed-incremental -g -

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i have problem tar linux program. create incremental backup. use following tar command first full backup:

tar --create --gzip --listed-incremental=$savedir/backup.snar --file=$savedir/$date.tar.gz $exclude $directory

$exclude contains example "--exclude test/testdir --exclude test/testdir2" $directory contains "-c /users/user1/desktop/ test"

if execute command following error:

tar: option --listed-incremental=/users/hofmeister/desktop/test/backup.snar not supported usage:   list:    tar -tf <archive-filename>   extract: tar -xf <archive-filename>   create:  tar -cf <archive-filename> [filenames...]   help:    tar –help

if change --listed-incremental option -g =$savedir/backup.snar. get:

usage:   list:    tar -tf <archive-filename>   extract: tar -xf <archive-filename>   create:  tar -cf <archive-filename> [filenames...]   help:    tar --help

what went wrong? use following version of tar: bsdtar 2.8.3 - libarchive 2.8.3

the problem tar version bsd. macports install gnutar. here works fine!

looks you're using bsdtar, , not gnu tar. bsdtar doesn't support incremental backups. have different flags too.


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