Unix/Linux 中特定文件的递归副本？
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Recursive copy of specific files in Unix/Linux?
提问by Yury Pogrebnyak
I need to copy all *.jarfiles from directory and all its subdirectories. How can I do it in UNIX/Linux terminal? Command cp -r *.jar /destination_dirdoesn't work.
我需要*.jar从目录及其所有子目录中复制所有文件。如何在 UNIX/Linux 终端中执行此操作？命令cp -r *.jar /destination_dir不起作用。
采纳答案by Sean
rsyncis useful for local file copying as well as between machines. This will do what you want:
rsync对于本地文件复制以及机器之间的复制很有用。这将执行您想要的操作：
rsync -avm --include='*.jar' -f 'hide,! */' . /destination_dir
rsync -avm --include='*.jar' -f 'hide,! */' . /destination_dir
The entire directory structure from . is copied to /destination_dir, but only the .jar files are copied. The -a ensures all permissions and times on files are unchanged. The -m will omit empty directories. -v is for verbose output.
整个目录结构来自 . 复制到 /destination_dir，但仅复制 .jar 文件。-a 确保文件的所有权限和时间不变。-m 将省略空目录。-v 用于详细输出。
For a dry run add a -n, it will tell you what it would do but not actually copy anything.
对于试运行，添加一个 -n，它会告诉你它会做什么，但实际上不会复制任何东西。
回答by Pavan Manjunath
tar -cf - `find . -name "*.jar" -print` | ( cd /destination_dir && tar xBf - )
回答by glenn Hymanman
find . -name \*.jar | xargs cp -t /destination_dir
Assuming your jar filenames do not contain spaces, and your cphas the "-t" option. If cpcan't do "-t"
假设您的 jar 文件名不包含空格，并且您cp有“-t”选项。如果cp不能做“-t”
find . -name \*.jar | xargs -I FILE cp FILE /destination_dir
回答by Bartosz Moczulski
cp --parents `find -name \*.jar` destination/
from man cp:
来自man cp：
--parents
use full source file name under DIRECTORY
回答by user unknown
If your find has an -exec switch, and cp an -t option:
如果您的 find 有一个 -exec 开关，并且有一个 -t 选项：
find . -name "*.jar" -exec cp -t /destination_dir {} +
If you find doesn't provide the "+" for parallel invocation, you can use ";" but then you can omit the -t:
如果你发现没有为并行调用提供“+”，你可以使用“;” 但是你可以省略-t：
find . -name "*.jar" -exec cp {} /destination_dir ";"
回答by Idelic
If you want to maintain the same directory hierarchy under the destination, you could use
如果要在目标下保持相同的目录层次结构，可以使用
(cd SOURCE && find . -type f -name \*.jar -exec tar cf - {} +) \
| (cd DESTINATION && tar xf -)
This way of doing it, instead of expanding the output of findwithin back-ticks, has the advantage of being able to handle any number of files.
这种做法find的优点是能够处理任意数量的文件，而不是在反引号内扩展输出。
回答by uzsolt
If you don't need the directory structure only the jar files, you can use:
如果你不需要目录结构只需要 jar 文件，你可以使用：
shopt -s globstar
cp **/*.jar destination_dir
If you want the directory structure you can check cp's --parentsoption.
如果你想要目录结构，你可以检查cp's--parents选项。
