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rescue (8)
  • >> rescue (8) ( FreeBSD man: Команды системного администрирования )
  • Ключ rescue обнаружен в базе ключевых слов.

  • BSD mandoc
     

    NAME

    rescue
    
     - rescue utilities in
    
    /rescue
    
     
    

    DESCRIPTION

    The /rescue directory contains a collection of common utilities intended for use in recovering a badly damaged system. With the transition to a dynamically-linked root beginning with Fx 5.2 , there is a real possibility that the standard tools in /bin and /sbin may become non-functional due to a failed upgrade or a disk error. The tools in /rescue are statically linked and should therefore be more resistant to damage. However, being statically linked, the tools in /rescue are also less functional than the standard utilities. In particular, they do not have full use of the locale, pam(3), and nsswitch libraries.

    If your system fails to boot, and it shows a prompt similar to:

    "Enter full pathname of shell or RETURN for /bin/sh:

    the first thing to try running is the standard shell, /bin/sh If that fails, try running /rescue/sh which is the shell. To repair the system, the root partition must first be remounted read-write. This can be done with the following mount(8) command:

    "/rescue/mount -uw /"

    The next step is to double-check the contents of /bin , /sbin and /usr/lib possibly mounting a Fx rescue or ``live file system'' CD-ROM (e.g., disc2 of the officially released Fx ISO images) and copying files from there. Once it is possible to successfully run /bin/sh , /bin/ls and other standard utilities, try rebooting back into the standard system.

    The /rescue tools are compiled using crunchgen(1), which makes them considerably more compact than the standard utilities. To build a Fx system where space is critical, /rescue can be used as a replacement for the standard /bin and /sbin directories; simply change /bin and /sbin to be symbolic links pointing to /rescue Since /rescue is statically linked, it should also be possible to dispense with much of /usr/lib in such an environment.

    In contrast to its predecessor /stand /rescue is updated during normal Fx source and binary upgrades.  

    FILES

    /rescue
    Root of the hierarchy.

     

    SEE ALSO

    crunchgen(1), crash(8)  

    HISTORY

    The utilities first appeared in Fx 5.2 .  

    AUTHORS

    An -nosplit The system was written by An Tim Kientzle Aq kientzle@FreeBSD.org , based on ideas taken from Nx . This manual page was written by An Simon L. Nielsen Aq simon@FreeBSD.org , based on text by An Tim Kientzle Aq kientzle@FreeBSD.org .  

    BUGS

    Most of the tools work even in a fairly crippled system. The most egregious exception is the version of vi(1), which currently requires that /usr be mounted so that it can access the termcap(5) files. Hopefully, a failsafe termcap(3) entry will eventually be added into the ncurses(3) library, so that /rescue/vi can be used even in a system where /usr cannot immediately be mounted. In the meantime, the version of the ed(1) editor can be used from /rescue/ed if you need to edit files, but cannot mount /usr


     

    Index

    NAME
    DESCRIPTION
    FILES
    SEE ALSO
    HISTORY
    AUTHORS
    BUGS


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