The Tar of Linux basics

#未完待续

The only way to unlock a single file

If I just want to untie the package file,
One of the files in it, how do you do it? Vigilance simple, you just use-JTV to find the file name you want, and then the file name
You can undo it. We use the following example 杢 to illustrate:

# 1. First find our file name, fake ou untie shadow file OK:

[[Email protected]~]# tar-jtv-f/root/etc.tar.bz2 | Grep'Shadow'-R--------Root/root1230  -- the- in  Geneva: +: -etc/shadow--R--------Root/root622  -- the- in  Geneva: +: -etc/gshadow--R--------Root/root636  -- the- in  Geneva: +: -etc/Gshadow-R--------Root/root1257  -- the- in  Geneva: +: -Etc/shadow <==This is what we want! 

# 2. Untie the file! The astonished law does not practice as follows:

[Email protected] ~]# TAR-JXV-

Package a directory, but do not include some of the file practices in that directory

Fake ou we want to pack/etc//root a few important catalogs, but don't want to pack/root/etc* 's opening files because it
We've just created a backup file! and fake OU this new packing file to be placed/root/system.tar.bz2,
Of course this file does not have to pack itself (because this file is placed under/root!). ), we can now pass through the--exclude
Help! That exclude is not bag ton of meaning! So you can do this:

[Email protected] ~]# TAR-JCV  -f/root/system.tar.bz2--exclude=/root/etc* \

Backup only a new file than at some point

In some cases you will want to back up your new files and don't want to back up your old files! At this time--newer-mtime this election is the powder weight
I'll take it! In fact, there are two elections, one is "--newer" and the other is "--newer-mtime", the two choices are what
Not the same? We talked about three different time parameters in the touch introduction of the seventh chapter, and when using--newer, it means that subsequent
The date package ton "Mtime not CTime", and--newer-mtime is only mtime! That's it! ^_^.
Then let us 杢 try to deal with it!

 [[email protected] ~]# tar-jcv-f/root/etc.newer.then.passwd.tar.bz2 \  >--newer-mtime= 2008/09/29  /etc/*