net::scp copy/overwriting 文件夹

Question

假设您将文件夹 f_1 从本地计算机复制到目标计算机 m_1 到 /tmp 目录中 mf_1。

console:
[root@m_1 tmp] ls -a | grep mf_1 # => doesn't exist

irb:
options = {recursive: true}
Net::SCP.upload!(host, user, '~/f_1', '/tmp/mf_1', options)

console:
[root@m_1 tmp] ls -a | grep mf_1 # => folder exists, everything is fine

# but then, if you try to overwrite the existing folder...
irb:
Net::SCP.upload!(host, user, '~/f_1', '/tmp/mf_1', options)

console:
[root@m_1 tmp] ls -a | grep mf_1 # => folder exists
[root@m_1 tmp] cd mf_1
[root@m_1 m_f1] ls # => f_1 => /tmp/mf_1/f_1

因此，文件夹被复制到 /tmp/mf_1 中，而不是 mf_1 被覆盖，导致 /tmp/mf_1/f_1。

问题很简单，如何保持行为一致并调用

Net::SCP.upload!(host, user, '~/f_1', '/tmp/mf_1', options)

当文件夹存在和不存在时，连续两次会以相同的方式操作吗？

Answer 1

如果 source 是目录，我最后添加了一个点。
这并不理想，这里有一个例子：

options = {recursive: true}

# target /tmp/mf_1 doesn't exist
Net::SCP.upload!(host, user, '~/f_1/.', '/tmp/mf_1', options)
# target /tmp/mf_1 has been created

# second time
Net::SCP.upload!(host, user, '~/f_1/.', '/tmp/mf_1', options)
# target /tmp/mf_1 has been overwritten
# not dir, but files in it, which is what we usually want

net::scp copy/overwriting 文件夹

net::scp copy/overwriting folder

ruby

ssh

scp