系统备份

1.     系统解压缩

（1）      tar cvf file.tar file(*)         建立压缩文件file.tar

（2）      compress file.tar    生成压缩文件file.tar.Z

（3）      gzip file.tar      生成压缩文件file.tar.gz

（4）      tar zcvf file.tar file(*) 生成压缩文件file.tar.gz

 

2.     cpio

(1)            cpio –i  copy in mode

(2)            cpio –o  copy out mode

(3)            cpio –p  copy pass mode

3.     dd

用来复制裸设备，如if(in file)of(out file)

server# dd if=/dev/rdsk/c1t0d0s0 of=/dev/rdsk/c1t4d0s0 bs=128k

server# dd if=/dev/rmt/0h of=/dev/rmt/1h

 

4.     ufsdump

    # ufsdump 0cu /dev/rmt/0 /dev/rdsk/c0t0d0s0

    0：备份级别0  c：(cartridge: blocking factor126) u：u (updates the dump record /etc/dumpdates) /dev/rmt/0：目标设备 /dev/rdsk/c0t0d0s0：源设备

DUMP: Writing 63 Kilobyte records

DUMP: Date of this level 0 dump: Mon Feb 03 13:26:33 1997

DUMP: Date of last level 0 dump: the epoch

DUMP: Dumping /dev/rdsk/c0d0s0 (solaris:/) to /dev/rmt/0.

DUMP: Mapping (Pass I) [regular files]

DUMP: Mapping (Pass II) [directories]

DUMP: Estimated 46998 blocks (22.95MB).

DUMP: Dumping (Pass III) [directories]

DUMP: Dumping (Pass IV) [regular files]

DUMP: 46996 blocks (22.95MB) on 1 volume at 1167 KB/sec

DUMP: DUMP IS DONE

DUMP: Level 0 dump on Mon Feb 03 13:26:33 1997

server# cat /etc/dumpdates

/dev/rdsk/c0t0d0s0 0 Wed Feb 2 20:23:31 2000

/dev/md/rdsk/d0 0 Tue Feb 1 20:23:31 2000

/dev/md/rdsk/d2 0 Tue Feb 1 22:19:19 2000

/dev/md/rdsk/d3 0 Wed Feb 2 22:55:16 2000

/dev/rdsk/c0t0d0s3 0 Wed Feb 2 20:29:21 2000

/dev/md/rdsk/d1 0 Wed Feb 2 21:20:04 2000

/dev/rdsk/c0t0d0s4 0 Wed Feb 2 20:24:56 2000

/dev/rdsk/c2t3d0s2 0 Wed Feb 2 20:57:34 2000

/dev/rdsk/c0t2d0s3 0 Wed Feb 2 20:32:00 2000

5.     ufsrestore

# ufsrestore xf /dev/rmt/0

从/dev/rmt/0上解压恢复数据

You have not read any volumes yet.

Unless you know which volume your file(s) are on you should start

with the last volume and work towards the first.

Specify next volume #: 1

set owner/mode for '.'? [yn] y

# ufsrestore tf /dev/rmt/0  从/dev/rmt/0查看数据

1 ./openwin/devdata/profiles

2 ./openwin/devdata

3 ./openwin

9 ./lp/alerts

1 ./lp/classes

15 ./lp/fd

1 ./lp/forms

# ufsrestore I  交互式模式

ufsrestore > help

Available commands are:

ls [arg] - list directory

cd arg - change directory

pwd - print current directory

add [arg] - add `arg' to list of files to be extracted

delete [arg] - delete `arg' from list of files to be extracted

extract - extract requested files

setmodes - set modes of requested directories

quit - immediately exit program

what - list dump header information

verbose - toggle verbose flag (useful with ``ls'')

help or `?' - print this list

If no `arg' is supplied, the current directory is used

ufsrestore >