(tar.info.gz) compare

Info Catalog

(tar.info.gz) delete

(tar.info.gz) Advanced tar

 
 Comparing Archive Members with the File System
 ----------------------------------------------
 
      _(This message will disappear, once this node revised.)_
 
    The `--compare' (`-d'), or `--diff' operation compares specified
 archive members against files with the same names, and then reports
 differences in file size, mode, owner, modification date and contents.
 You should _only_ specify archive member names, not file names.  If you
 do not name any members, then `tar' will compare the entire archive.
 If a file is represented in the archive but does not exist in the file
 system, `tar' reports a difference.
 
    You have to specify the record size of the archive when modifying an
 archive with a non-default record size.
 
    `tar' ignores files in the file system that do not have
 corresponding members in the archive.
 
    The following example compares the archive members `rock', `blues'
 and `funk' in the archive `bluesrock.tar' with files of the same name
 in the file system.  (Note that there is no file, `funk'; `tar' will
 report an error message.)
 
      $ tar --compare --file=bluesrock.tar rock blues funk
      rock
      blues
      tar: funk not found in archive
 
 Depending on the system where you are running `tar' and the version you
 are running, `tar' may have a different error message, such as:
 
      funk: does not exist
 
    The spirit behind the `--compare' (`--diff', `-d') option is to
 check whether the archive represents the current state of files on
 disk, more than validating the integrity of the archive media.  For
 this later goal,  verify.
 

Info Catalog

(tar.info.gz) delete

(tar.info.gz) Advanced tar