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IRIX Base Documentation 1998 November
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IRIX 6.5.2 Base Documentation November 1998.img
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Backup.z
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Backup
Wrap
Text File
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1998-10-20
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4KB
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133 lines
BBBBaaaacccckkkkuuuupppp((((1111)))) BBBBaaaacccckkkkuuuupppp((((1111))))
NNNNAAAAMMMMEEEE
Backup - backup the specified file or directory
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
BBBBaaaacccckkkkuuuupppp [ ----hhhh _h_o_s_t_n_a_m_e ] [ ----iiii ] [ ----tttt _t_a_p_e_d_e_v_i_c_e ]
[ _d_i_r_e_c_t_o_r_y__n_a_m_e | _f_i_l_e__n_a_m_e ]
DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
The _B_a_c_k_u_p command archives the named file or directory (the current
directory if none is specified) to the local or remote tape device. It
can be used to make a full system backup by specifying the directory name
as ////.
In case of a full backup, this command makes a list of the files in the
disk volume header and saves this information in a file which is then
stored on tape. This file is used during crash recovery to restore a
damaged volume header. Information about mounted filesystems and logical
volumes is also copied to the backup. The current date is saved in the
file /_e_t_c/_l_a_s_t_b_a_c_k_u_p.
Full system backups can be used with the system recovery mechanism from
the PROM maintenance mode (the miniroot is booted with mode 3 in the
normal way, but recovery is started, instead of installation). See your
OOOOwwwwnnnneeeerrrr''''ssss MMMMaaaannnnuuuuaaaallll for more information on this procedure.
The options and arguments to _B_a_c_k_u_p are:
----hhhh _h_o_s_t_n_a_m_e If a tape drive attached to a remote host is used for
backup, specify the name of the remote host with the ----hhhh
_h_o_s_t_n_a_m_e option. For remote backup to successfully work,
you should have a TCP/IP network connection to the remote
host and gggguuuueeeesssstttt login privileges on that host.
----iiii If a backup of all files modified since the date
specified in the /_e_t_c/_l_a_s_t_b_a_c_k_u_p file is desired, specify
the ----iiii option. This option is valid only when doing a
complete backup.
----tttt _t_a_p_e_d_e_v_i_c_e If the local or remote tape device is pointed to by a
device file other than /_d_e_v/_t_a_p_e, specify the device with
the ----tttt _t_a_p_e_d_e_v_i_c_e option.
_d_i_r_e_c_t_o_r_y__n_a_m_e Create a backup of the directory _d_i_r_e_c_t_o_r_y__n_a_m_e.
_f_i_l_e__n_a_m_e Create a backup of the file _f_i_l_e__n_a_m_e.
The _B_a_c_k_u_p command uses _c_p_i_o(1) to perform the backup function. Older
versions used _b_r_u(1), or _t_a_r(1). The _R_e_s_t_o_r_e(1) command will handle any
of the 3 types of backups.
PPPPaaaaggggeeee 1111
BBBBaaaacccckkkkuuuupppp((((1111)))) BBBBaaaacccckkkkuuuupppp((((1111))))
FFFFIIIILLLLEEEESSSS
/tmp/volhdrlist contains the list of the root volume header files
/etc/lastbackup contains the date of last full backup for incremental
backups; the modification time of this file is used
NNNNOOOOTTTTEEEE
_B_a_c_k_u_p constructs a list of file names with ffffiiiinnnndddd to pipe to cpio.
Filenames with embedded white space will work this way, with the
exception of filenames with embedded newlines, since each filename in the
list is terminated by a newline. This may sometimes produce confusing
error messages.
SSSSEEEEEEEE AAAALLLLSSSSOOOO
List_tape(1), Restore(1), cpio(1).
PPPPaaaaggggeeee 2222