本篇内容介绍了“linux怎样使用tar命令打包或备份文件”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

创新互联自成立以来，一直致力于为企业提供从网站策划、网站设计、网站制作、成都网站制作、电子商务、网站推广、网站优化到为企业提供个性化软件开发等基于互联网的全面整合营销服务。公司拥有丰富的网站建设和互联网应用系统开发管理经验、成熟的应用系统解决方案、优秀的网站开发工程师团队及专业的网站设计师团队。

怎样使用tar命令打包（备份）文件？
A:The syntax of tar is:
tar [options][files]
The options used most often with tar are as follows:
c Creates a new backup,overwriting any files already on the backup destination.
x Extracts files from backup media.
t Lists the contents of backup media.
v Displays the name of each file being processed.
f Creates backups on a specified device.
u Adds files to the backup if they are not already there,or if they have been modified since they were last written on the backup.
步骤：
1）估算打包文件的大小，确定使用档案媒体（archive media）的空间，用命令du -s
例如：
$ lf
a.out* fork.c mbox time.c
atoi.c int.c memcpy.c vi
$ du -s
296 .
$
该例显示的296代表the total number of 512-byte blocks,计算：512*296/1024=148kilobytes.
2）制作备份，用命令tar cvf /dev/fd0135ds18 .(将该目录下的所有内容备份到1.44英寸软盘中where c causes a new backup to be created,v causes each file to be displayed as the backing up takes place,and f causes the subsequent argument--/dev/fd0135ds18 to be the destination of the backup.)
注：平时硬盘上的备份，我们一般用命令tar cvf filename.tar .
例如：
$ tar cvf wuyd.tar .
a ./.profile 2 tape blocks
a ./.lastlogin 0 tape blocks
a ./mbox 10 tape blocks
a ./fork.c 2 tape blocks
a ./memcpy.c 1 tape blocks
a ./.sh_history 3 tape blocks
a ./a.out 91 tape blocks
a ./time.c 1 tape blocks
a ./vi 169 tape blocks
a ./int.c 1 tape blocks
a ./atoi.c 1 tape blocks
tar: same as archive file: ./wuyd.tar
a ./.scoadmin.pref 1 tape blocks
$ lf
a.out* fork.c mbox time.c wuyd.tar
atoi.c int.c memcpy.c vi
我们还可以用命令tar cvf /dev/fd0135ds18 ./filename将该目录下的名为filename的文件备份到archive media中
怎样列出tar文档的内容？
A:tar tvf /dev/fd0135ds18
tar tvf filename.tar
例如：
$ tar tvf wuyd.tar
tar: blocksize = 20
rw-------203/50 896 Sep 17 15:07 2003 ./.profile
r--------203/21 0 Sep 24 19:49 2003 ./.lastlogin
rw-------203/50 4720 Sep 21 11:17 2003 ./mbox
rw-r--r--203/50 583 Sep 17 15:27 2003 ./fork.c
rw-r--r--203/50 218 Sep 17 20:22 2003 ./memcpy.c
rw-------203/50 1474 Sep 24 20:26 2003 ./.sh_history
rwxr-xr-x203/50 46224 Sep 22 21:00 2003 ./a.out
rw-r--r--203/50 341 Sep 19 09:02 2003 ./time.c
rw-r--r--203/50 86283 Sep 21 09:14 2003 ./vi
rw-r--r--203/50 93 Sep 21 10:53 2003 ./int.c
rw-r--r--203/50 144 Sep 22 21:00 2003 ./atoi.c
rw-r--r-- 0/3 41 Sep 23 20:34 2003 ./.scoadmin.pref
$
怎样从tar文档中导出文件？
A:tar xvf /dev/fd0135ds18
tar xvf filename.tar
例如：
$ mkdir uu;cp wuyd.tar ./uu
$ lf
a.out* fork.c mbox time.c vi
atoi.c int.c memcpy.c uu/ wuyd.tar
$ cd uu
$ tar xvf wuyd.tar
tar: blocksize = 20
x ./.profile, 896 bytes, 2 tape blocks
x ./.lastlogin, 0 bytes, 0 tape blocks
x ./mbox, 4720 bytes, 10 tape blocks
x ./fork.c, 583 bytes, 2 tape blocks
x ./memcpy.c, 218 bytes, 1 tape blocks
x ./.sh_history, 1474 bytes, 3 tape blocks
x ./a.out, 46224 bytes, 91 tape blocks
x ./time.c, 341 bytes, 1 tape blocks
x ./vi, 86283 bytes, 169 tape blocks
x ./int.c, 93 bytes, 1 tape blocks
x ./atoi.c, 144 bytes, 1 tape blocks
x ./.scoadmin.pref, 41 bytes, 1 tape blocks
$
我们可用命令tar xvf /dev/fd0135ds18 ./filename导出archive media中的单个文件
例如：
$ lf
wuyd.tar
$ tar xvf wuyd.tar ./time.c
tar: blocksize = 20
x ./time.c, 341 bytes, 1 tape blocks
$ lf
time.c wuyd.tar
$
怎样使用tar命令提供的简写形式？
A:
$ more /etc/default/tar
# @(#) def135.src 25.2 94/07/25
#
# Copyright (C) 1987-1994 The Santa Cruz Operation, Inc.
# All Rights Reserved.
# The information in this file is provided for the exclusive use of
# the licensees of The Santa Cruz Operation, Inc. Such users have the
# right to use, modify, and incorporate this code into other products
# for purposes authorized by the license agreement provided they include
# this notice and the associated copyright notice with any such product.
# The information in this file is provided "AS IS" without warranty.
#
# default/tar - archive devices: tar(C)
#
# device block size tape
#
archive0=/dev/rfd048ds9 18 360 n
archive1=/dev/rfd148ds9 18 360 n
archive2=/dev/rfd096ds15 10 1200 n
archive3=/dev/rfd196ds15 10 1200 n
# archive4=/dev/rfd096ds9 18 720 n
archive4=/dev/rfd0135ds9 18 720 n
archive5=/dev/rfd1135ds9 18 720 n
# archive5=/dev/rfd196ds9 18 720 n
archive6=/dev/rfd0135ds18 18 1440 n
archive7=/dev/rfd1135ds18 18 1440 n
archive8=/dev/rct0 20 0 y
archive9=/dev/rctmini 20 0 y
archive10=/dev/rdsk/fp03d 18 720 n
archive11=/dev/rdsk/fp03h 18 1440 n
archive12=/dev/rdsk/fp03v21 10 20330 n
#
# The default device in the absence of a numeric or "-f device" argument

“linux怎样使用tar命令打包或备份文件”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联网站，小编将为大家输出更多高质量的实用文章！

网页标题：linux怎样使用tar命令打包或备份文件
转载来于：http://ybzwz.com/article/ggeddj.html