Author: pyratebeard <firstname.lastname@example.org>
Date: Sun, 16 Jan 2022 09:34:00 +0000
Merge branch 'just_the_tip'
1 file changed, 31 insertions(+), 0 deletions(-)
diff --git a/entry/20220116-ssh-aring_is_caring.md b/entry/20220116-ssh-aring_is_caring.md
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+Have you ever logged on to a server over SSH and had to type in your really long and complicated password (let us assume for some reason you haven't configured SSH keys and a key agent), then wanted to open a second connection to that same server only to type your long and complicated password again?
+What a pain in the ass.
+Did you know that you can 'share' SSH sessions?
+By using the `ControlMaster` and `ControlPath` config options you can open a session to a server using your long and complicated password, then every subsequent session to the same server shares the connection... no more password typing.
+In your ~/.ssh/config add the following
+ ControlMaster auto
+ ControlPath ~/.ssh/%r@%h:%p
+* `%r` - remote username
+* `%h` - remote hostname
+* `%p` - remote port
+Further information on these and other options can be found in the ssh_config(5) man page.
+This session sharing will work until the initial connection is closed, after which all subsequent connections will close, so be careful.
+If you would rather the initial connection remain open in the background you can add the following to ~/.ssh/config
+ ControlPersist yes
+You will have to kill or close that connection using an alternative method, e.g. `ssh -O exit`.
+Read the ssh_config(5) man page for further information.