tar只解压tar包中某个文件

如果tar包很大，而只想解压出其中某个文件。方法如下：

只想解压出Redis-1.972.tar  中的Changes文件，来查看有哪些更改。

[root@uplooking]# tar -tf Redis-1.972.tar

Redis-1.972

Redis-1.972/README

Redis-1.972/Changes

Redis-1.972/LICENSE

Redis-1.972/dist.ini

Redis-1.972/META.yml

Redis-1.972/MANIFEST

Redis-1.972/Build.PL

Redis-1.972/Makefile.PL

Redis-1.972/lib

Redis-1.972/lib/Redis.pm

Redis-1.972/t

Redis-1.972/t/01-basic.t

Redis-1.972/t/03-pubsub.t

Redis-1.972/t/11-timeout.t

Redis-1.972/t/30-scripts.t

Redis-1.972/t/00-compile.t

Redis-1.972/t/04-pipeline.t

Redis-1.972/t/05-nonblock.t

Redis-1.972/t/10-tie-list.t

Redis-1.972/t/20-tie-hash.t

Redis-1.972/t/02-responses.t

Redis-1.972/t/07-reconnect.t

Redis-1.972/t/50-fork_safe.t

Redis-1.972/lib/Redis

Redis-1.972/lib/Redis/Hash.pm

Redis-1.972/lib/Redis/List.pm

Redis-1.972/t/06-on-connect.t

Redis-1.972/scripts

Redis-1.972/scripts/publish.pl

Redis-1.972/t/08-unix-socket.t

Redis-1.972/t/42-client_cmds.t

Redis-1.972/t/release-distmeta.t

Redis-1.972/lib/Redis/Sentinel.pm

Redis-1.972/t/release-pod-coverage.t

Redis-1.972/scripts/redis-benchmark.pl

Redis-1.972/t/tlib/Test

Redis-1.972/t/tlib/Test/SpawnRedisServer.pm

Redis-1.972/tools/benchmarks

Redis-1.972/tools/benchmarks/read_vs_sysread.pl

Redis-1.972/t/tlib/Test/SpawnRedisTimeoutServer.pm

Redis-1.972/tools/benchmarks/readline_vs_sysread_vs_recv

Redis-1.972/tools/benchmarks/readline_vs_sysread_vs_recv/run.pl

Redis-1.972/tools/benchmarks/readline_vs_sysread_vs_recv/client-recv.pl

Redis-1.972/tools/benchmarks/readline_vs_sysread_vs_recv/client-sysread.pl

Redis-1.972/tools/benchmarks/readline_vs_sysread_vs_recv/client-readline.pl

Redis-1.972/tools/benchmarks/readline_vs_sysread_vs_recv/server-generator.pl

[root@nagios ~]# tar xvpf Redis-1.972.tar Redis-1.972/Changes

Redis-1.972/Changes

[root@nagios ~]# ll Redis-1.972

total 8

-rw-r--r-- 1 3957780 10902869 5894 Feb 18 07:54 Changes