A very good article, very useful, thanx to its author !<\/p>\n
I often use the UNIX command line tool scp (secure copy) to copy a file to a remote server. However, scp has one major drawback: It doesn\u2019t support resuming a transfer. So whenever I\u2019m transferring a file and something comes up which interrupts my transfer\u2013which is bound to happen\u2013I\u2019m cursing away at scp. The solution? Use rsync. It is overkill for most things I do, but when a transfer is interrupted, it is handy. Now, on to the doing.<\/p>\n
I want to transfer the file \u201cmyFile\u201d to the server \u201cremoteMachine\u201d, which I do with scp:
\nscp myFile remoteMachine:dirToPutIn\/<\/code>
\n(You should know this already if you\u2019re reading this in the first place.)<\/p>\n(Muzak while the transfer is in progress; a loud wail and the sound of hair being torn out by its roots as the transfer comes to a grinding halt.)<\/p>\n
Time to resume the file with rsync, which I do thusly:
\nrsync --partial --progress myFile remoteMachine:dirToPutIn\/<\/code>
\nThe \u201c\u2013partial\u201d argument is what does the trick. I added \u201c\u2013progress\u201d because I like to see how the transfer is going; rsync understandably doesn\u2019t show this by default as it is mostly used for purposes which don\u2019t require live progress reporting (e.g. scheduled backups).<\/p>\nBecause I know I\u2019ll have this problem again at some point, I have created an alias in my shell\u2019s (zsh) configuration file (~\/.zshrc):
\nalias scpresume=\"rsync --partial --progress\"<\/code>
\nI know that rsync and scp are not necessarily related, but the name \u201cscpresume\u201d reflects the purpose of the task I wish to do. And getting it done is what matters the most after all.<\/p>\nUpdate:<\/span>
\nJan pointed out in a comment that rsync communication is not secure by default, and that you should use tunneling to achieve secure communication. Andi provides the solution which is quite simple: Use--rsh=ssh<\/code> (use ssh as the r<\/strong>emote sh<\/strong>ell). Thus, our alias from before would look like this:alias scpresume=\"rsync --partial --progress --rsh=ssh\"<\/code><\/p><\/blockquote>\nsource<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
A very good article, very useful, thanx to its author ! I often use the UNIX command line tool scp (secure copy) to copy a file to a remote server. However, scp has one major drawback: It doesn\u2019t support resuming … Continue reading