Move files to and from server scp command



  • SCP or (secure copy) allows you to move files even entire directories to, or from local and or remote hosts, using the same authentication and securtiy levels as SSH.

    Copy the file “foobar.txt” from a remote host to the local host

        $ scp username@site.com:foobar.txt /local/directory
    

    Copy the file “foobar.txt” from the local host to a remote host

        $ scp foobar.txt username@remotehost.com:/path/to/directory
    

    Copy the directory “foo” from the local host to a remote host’s directory “bar”

        $ scp -r foo username@remotehost.com:/remote/directory/bar
    

    Copy the file “foobar.txt” from remote host “site1.com” to remote host “site2.com”

        $ scp username@site1.com:/remote/directory/foobar.txt \username@site2.com:/remote/directory/
    

    Copying the files “foo.txt” and “bar.txt” from the local host to your home directory on the remote host

        $ scp foo.txt bar.txt username@site.com:~
    

    Copy the file “foobar.txt” from the local host to a remote host using port 1000 (or whatever ssh port your running on)

        $ scp -P 1000 foobar.txt username@site.com:/remote/directory
    

    Copy multiple files from the remote host to your current directory on the local host

        $ scp username@site.com:/remote/directory/\{a,b,c\} .
    
        $ scp username@site.com:~/\{foo.txt,bar.txt\} .
    

    By default scp uses the Triple-DES cipher to encrypt the data being sent. Using the Blowfish cipher has been shown to increase speed on slower connections. This can be done by using option -c blowfish in the command line.

    $ scp -c blowfish file.txt username@site.com:~
    

    Use the -C option for compression, and a bit of speed. If you have a fast connection you might not notice much of a difference. However it is a bit more CPU intensive due to the algorithms used to generate the encryption.

    Blowfish scp example:

        $ scp -c blowfish -C file.txt username@site.com:~

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Tmux Commands

screen and tmux

A comparison of the features (or more-so just a table of notes for accessing some of those features) for GNU screen and BSD-licensed tmux.

The formatting here is simple enough to understand (I would hope). ^ means ctrl+, so ^x is ctrl+x. M- means meta (generally left-alt or escape)+, so M-x is left-alt+x

It should be noted that this is no where near a full feature-set of either group. This - being a cheat-sheet - is just to point out the most very basic features to get you on the road.

Trust the developers and manpage writers more than me. This document is originally from 2009 when tmux was still new - since then both of these programs have had many updates and features added (not all of which have been dutifully noted here).

Action tmux screen
start a new session tmux OR
tmux new OR
tmux new-session
screen
re-attach a detached session tmux attach OR
tmux attach-session
screen-r
re-attach an attached session (detaching it from elsewhere) tmux attach -d OR
tmux attach-session -d
screen -dr
re-attach an attached session (keeping it attached elsewhere) tmux attach OR
tmux attach-session
screen -x
detach from currently attached session ^b d OR
^b :detach
^a ^d OR
^a :detach
rename-window to newname ^b , <newname> OR
^b :rename-window <newn>
^a A <newname>
list windows ^b w ^a w
list windows in chooseable menu ^a "
go to window # ^b # ^a #
go to last-active window ^b l ^a ^a
go to next window ^b n ^a n
go to previous window ^b p ^a p
see keybindings ^b ? ^a ?
list sessions ^b s OR
tmux ls OR
tmux list-sessions
screen -ls
toggle visual bell ^a ^g
create another window ^b c ^a c
exit current shell/window ^d ^d
split window/pane horizontally ^b " ^a S
split window/pane vertically ^b % ^a |
switch to other pane ^b o ^a <tab>
kill the current pane ^b x OR (logout/^D)
collapse the current pane/split (but leave processes running) ^a X
cycle location of panes ^b ^o
swap current pane with previous ^b {
swap current pane with next ^b }
show time ^b t
show numeric values of panes ^b q
toggle zoom-state of current pane (maximize/return current pane) ^b z
break the current pane out of its window (to form new window) ^b !
re-arrange current panels within same window (different layouts) ^b [space]
Kill the current window (and all panes within) ^b killw [target-window]
  • Mount NFS from Truenas

    mkdir -p /media/rick/pool1 chown -R rick:rick /media/rick/pool1

    Add the automount to: /etc/fstab

    truenas.thecave:/mnt/pool1 /media/rick/pool1 nfs user,auto 0 0

    Retstart Nautilus to see the share in files:

    killall nautilus

    For other shares, just repeat the same process under directory ‘media’ with the name of the share substituted

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  • Again running smartctl after all is said and done:

    smartctl --all /dev/sda

    ddrescue-smartctl-after-rescue.png ddrescue-smartctl-2.png

    Yet an old drive in itself, I run the wheels off of them, and monitor regularly as anyone should.

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