"find /new_dir -exec grep -l old_dir {} \;"该命令查了手册,

newred

unix技术大全--系统管理员卷 说此命令发现新目录中没有而在旧目录中存在的文件,还将发现的新文件移到新目录中.同时将HOME变量的绝对路径名改变.

我在网上查了许久,都不能理解,请高手讲解一下!

下面的命令,我能理解
find / -user username -exec rm {} \;

abigant

我也不懂

寂寞烈火

{}中存放着find的结果,\;不过是必要的格式

newred

谢谢楼上的回复。
grep -l 有移动文件的作用？还能改变将HOME变量的绝对路径名？

yongjian

Post by newred
谢谢楼上的回复。
grep -l 有移动文件的作用？还能改变将HOME变量的绝对路径名？

grep有那些个功能吗？-l 只表示列出文件名，哪来什么移动文件和改变路径啊。你的命令灭有抄漏吧。。？

newred

这就是我不理解的,难道是中文版书翻译错了?

网上没有中文版,这是英文版内容,书名是"UNIX Unleashed, System Administrator's Edition"

---------------------------------
If the home directory of a username is altered, the previous initial directory files must be moved to the new directory. To move a user directory, issue the command:

cd /old_dir; tar -cf - . | (cd /new_dir; tar -xpf -)

Verify the result and then remove old_dir. If the user base is not entirely knowledgeable, look for old_dir in existing files and change them to new_dir for the user. The system can locate any entries by:

find /new_dir -exec grep -l old_dir {} \;

For any entries that find locates, change the entry to new_dir or, when appropriate, change the absolute path name to the more generic $HOME variable. Pay particular attention to the start up (dot) files contained within a user's home directory because errors in that class of file will surely get the attention of a user quickly.
-----------------------------------
网页地址:http://docs.rinet.ru:8080/UNIXs/ch17.htm

yongjian

Post by newred
这就是我不理解的,难道是中文版书翻译错了?

网上没有中文版,这是英文版内容,书名是"UNIX Unleashed, System Administrator's Edition"

---------------------------------
If the home directory of a username is altered, the previous initial directory files must be moved to the new directory. To move a user directory, issue the command:

cd /old_dir; tar -cf - . | (cd /new_dir; tar -xpf -)

Verify the result and then remove old_dir. If the user base is not entirely knowledgeable, look for old_dir in existing files and change them to new_dir for the user. The system can locate any entries by:

find /new_dir -exec grep -l old_dir {} \;

For any entries that find locates, change the entry to new_dir or, when appropriate, change the absolute path name to the more generic $HOME variable. Pay particular attention to the start up (dot) files contained within a user's home directory because errors in that class of file will surely get the attention of a user quickly.
-----------------------------------
网页地址:http://docs.rinet.ru:8080/UNIXs/ch17.htm

ok, 我的理解，英文对于find的命令的作用只有一句，就是"The system can locate any entries by". 其他的事都得用户自己做。"For any entries that find locates",这一句可以证明，find除了locate entries,再没做别的。

newred

非常感谢! 书上确实是翻译错了.