pmlogmv(1) — Linux manual page

PMLOGMV(1)               General Commands Manual              PMLOGMV(1)

NAME

       pmlogmv - move (rename) Performance Co-Pilot archive files

SYNOPSIS

       pmlogmv [-cfNV?]  oldname newname

DESCRIPTION

       A Performance Co-Pilot (PCP) archive consists of multiple files
       as created by pmlogger(1).  pmlogmv allows all the files of a
       single PCP archive to be moved or renamed as a group in a single
       operation.

       The oldname argument identifies the target archive, and may be
       either the basename that is common to all files in that archive
       or one of the archive's files.  The new archive's basename is
       newname.

       Because PCP archives are important records of system activity,
       special care is taken to ensure the integrity of an archive's
       files.  For recoverable problems encountered during the execution
       of pmlogmv, all the files associated with oldname will be
       preserved, and no new files with the newname prefix will be
       created.  ``Recoverable problems'' include signals that can be
       caught (such as SIGHUP, SIGINT, SIGQUIT and SIGTERM), permissions
       issues, new files already existing, file system full events, etc.

       The implementation of pmlogmv tries to use hard links in the file
       system and so follows the semantic restrictions of ln(2) which
       for most systems means the directories containing both the
       oldname and the newname PCP archive files need to be within the
       same file system.  When this is not possible, pmlogmv falls back
       to using cp(1) to copy oldname to newname.

OPTIONS

       The available command line options are:

       -c, --checksum
            Paranoid checking mode when cp(1) is needed and each file's
            checksum is computed for the original file and the copied
            file, and the checksums must match before the copy is
            considered acceptable.  The checksum command is chosen by
            trying the following in turn until one is found to be
            executable: md5sum(1), sha256sum(1), sha1sum(1) and sum(1).
            If no executable checksum command is found, a warning is
            issued and the checksum check is skipped.

       -f, --force
            Normally pmlogmv takes a conservative view in respect of
            newname and will not proceed if newname contains any
            characters that are likely to cause a problem for sh(1).
            This includes ``glob'' characters like ``?'', ``*'' and
            ``['', shell syntax meta characters like ``('', ``|'', ``;''
            and ``&'', shell I/O redirection characters like ``<'' and
            ``>'', the dollar sign, a space, etc.

            The -f flag forces pmlogmv to proceed, even if newname
            contains any of these ``unsafe'' characters.

       -N, --showme
            Perform a dry-run, checking and reporting what changes would
            be made without making any changes.

       -V, --verbose
            Enable verbose mode.

       -?, --help
            Display usage message and exit.

DIAGNOSTICS

       All error and warning messages are intended to be easily
       understood and errors produce a non-zero exit status.

SEE ALSO

       cp(1), ln(1), md5sum(1), PCPIntro(1), pmlogger(1), sha1sum(1),
       sha256sum(1) and LOGARCHIVE(5).

COLOPHON

       This page is part of the PCP (Performance Co-Pilot) project.
       Information about the project can be found at 
       ⟨http://www.pcp.io/⟩.  If you have a bug report for this manual
       page, send it to pcp@groups.io.  This page was obtained from the
       project's upstream Git repository
       ⟨https://github.com/performancecopilot/pcp.git⟩ on 2024-06-14.
       (At that time, the date of the most recent commit that was found
       in the repository was 2024-06-14.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       man-pages@man7.org

Performance Co-Pilot               PCP                        PMLOGMV(1)

Pages that refer to this page: pmgetopt(1), pmlogger_daily(1)

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