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/util-linux/sys-utils/switch_root.8

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  1. .\" Karel Zak <kzak@redhat.com>
    2. 

  2. .TH SWITCH_ROOT 8 "June 2009" "Linux"
    3. 

  3. .SH NAME
    4. 

  4. switch_root \- switch to another filesystem as the root of the mount tree.
    5. 

  5. .SH SYNOPSIS
    6. 

  6. .B switch_root
    7. 

  7. .RB [ \-hV ]
    8. 

  8. .LP
    9. 

  9. .B switch_root
    10. 

  10. .I newroot
    11. 

  11. .I init
    12. 

  12. .RI [ arg ...]
    13. 

  13. .SH DESCRIPTION
    14. 

  14. .B switch_root
    15. 

  15. moves already mounted /proc, /dev and /sys to
    16. 

  16. .I newroot
    17. 

  17. and makes
    18. 

  18. .I newroot
    19. 

  19. the new root filesystem and starts
    20. 

  20. .I init
    21. 

  21. process.
    22. 

  22. 

  23. .B WARNING: switch_root removes recursively all files and directories on the current root filesystem.
    24. 

  24. 

  25. .SH OPTIONS
    26. 

  26. .IP "\fB\-h, \-\-help\fP"
    27. 

  27. show help and exit
    28. 

  28. .IP "\fB\-V, \-\-version\fP"
    29. 

  29. show version number and exit
    30. 

  30. 

  31. .SH RETURN VALUE
    32. 

  32. .B switch_root
    33. 

  33. returns 0 on success and 1 on failure.
    34. 

  34. 

  35. .SH "SEE ALSO"
    36. 

  36. .BR mount (8)
    37. 

  37. .BR chroot (2)
    38. 

  38. .BR init (8)
    39. 

  39. .BR mkinitrd (8)
    40. 

  40. .SH AUTHORS
    41. 

  41. .nf
    42. 

  42. Peter Jones <pjones@redhat.com>
    43. 

  43. Jeremy Katz <katzj@redhat.com>
    44. 

  44. Karel Zak <kzak@redhat.com>
    45. 

  45. .fi
    46. 

  46. .SH AVAILABILITY
    47. 

  47. The switch_root command is part of the util-linux-ng package and is available from
    48. 

  48. ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
    49. 

  49.