Smart way to copy multiple files from different pa

问题:

I would like to know an easy way to use scp to copy files and folders that are present in different paths on my file system. The ssh destination server requests a password and I cannot put this in configuration files. I know that scp doesn't have a password parameter that I could supply from a script, so for now I must copy each file or directory one by one, writing my password every time.

回答1:

in addition to the already mentioned glob:

you can use {,} to define alternative paths/pathparts in one single statement

e.g.: scp user@host:/{PATH1,PATH2} DESTINATION

回答2:

If you can express all the names of the files you want to copy from the remote system using a single glob pattern, then you can do this in a single scp command. This usage will only support a single destination folder on the local system for all files though. For example:

scp 'RemoteHost:/tmp/[abc]*/*.tar.gz' .

copies all of the files from the remote system which are names (something).tar.gz and which are located in subdirectories of /tmp whose names begin with a, b, or c. The single quotes are to protect the glob pattern from being interpreted from the shell on the local system.

If you cannot express all the files you want to copy as a single glob pattern and you still want the copy to be done using a single command (and a single SSH connection which will ask for your passsword only once) then you can either:

• Use a different command than scp, like sftp or rsync, or
• Open an SSH master connection to the remote host and run several scp commands as slaves of that master. The slaves will piggyback on the master connection which stays open throughout and won't ask you for a password. Read up on master & slave connections in the ssh manpage.

回答3:

create a key pair, copy the public key to the server side.

ssh-keygen -t rsa

Append content inside the file ~/.ssh/identity.pub to file ~/.ssh/authorized_keys2 of server side user. You need not to type password anymore.

However, be careful! anybody who can access your "local account" can "ssh" to the server without password as well.

回答4:

Alternatively, if you cannot use public key authentication, you may add the following configuration to SSH (either to ~/.ssh/config or as the appropriate command-line arguments):

ControlMaster auto
ControlPath /tmp/ssh_mux_%h_%p_%r
ControlPersist 2m

With this config, the SSH connection will be kept open for 2 minutes so you'll only need to type the password the first time.

This post has more details on this feature.

回答5:

From this site:

Open the master

SSHSOCKET=~/.ssh/myUsername@targetServerName ssh -M -f -N -o ControlPath=$SSHSOCKET myUsername@targetServerName

Open and close other connections without re-authenticating as you like

scp -o ControlPath=$SSHSOCKET myUsername@targetServerName:remoteFile.txt ./

Close the master connection

ssh -S $SSHSOCKET -O exit myUsername@targetServerName

It's intuitive, safer than creating a key pair, faster than creating a compressed file and worked for me!