synk

synchronize files between hosts
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commit 462ae7788c98eb609661e919418ca0bb55b358fa
parent aa93f8110afe112cdb55cf72b6245b576ebdbc08
Author: Willy <willyatmailoodotorg>
Date:   Thu Sep  8 14:22:47 +0200

Add manpage for the synk(1) command

Diffstat:
synk.1 | 107+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 107 insertions(+), 0 deletions(-)
diff --git a/synk.1 b/synk.1 @@ -0,0 +1,107 @@ +.Dd 2016-09-08 +.Dt SYNK 1 +.Os POSIX.1-2008 +.Sh NAME +.Nm synk +.Nd synchronize files between multiple hosts +.Sh SYNOPSIS +.Nm +.Op Fl sv +.Op Fl f Ar file +.Op Fl p Ar port +.Op Fl h Ar host +.Ar file.. +.Sh DESCRIPTION +.Nm +will connect to the given peers, retrieve the sha512 / mtime of +.Ar file +on each host and, if the hashes differ at some point, +.Xr rsync 1 +the most recent version from the host (master) to all other peers. In +case the master is not localhost, +.Xr ssh 1 +will be used to spawn a remote +.Xr rsync 1 +command between the master and each slave (except for localhost as it's not needed). +.Pp +When +.Nm +starts up, it reads the peer list from a configuration file, typically +.Xr synk.conf 5 , +unless peers are specified on the command line. +.Bl -tag -width "-f file" +.It Fl s +Enable server-mode. This will make +.Nm +listen for incomming connections on the address given by +.Ar host and port . +This is used internally by +.Nm +and should never be called by the user. +.It Fl v +Increase verbosity. There are two levels of logging, as follow: +.Bl -enum -compact +.It +print out informations about peers and files (VERBOSE) +.It +detail all actions taken (DEBUG) +.El +The logging level can be increased by passing the verbose flag (-v) again. +Each level includes the messages of the previous ones. +.Nm +will log informative messages to stderr. +.It Fl f Ar file +Have +.Nm +use +.Ar file +as the configuration file, instead of the default +.Pa /etc/synk.conf . +.It Fl p Ar port +Have the next peer listen on +.Ar port +for incoming connections, and connect to it via this port as well. +.It Fl h Ar host +Add +.Ar host +to the list of peers to synchronize. Using this flag will prevent +.Nm +from parsing +.Xr synk.conf 5 . +.Ar file +with. Peers are added as they are parsed on the command line, which +means that you can have different +.Ar host +listen on different +.Ar port +by calling the +.Fl p +flag before each +.Fl f +flag (see +.Sx EXAMPLES +for use cases). +.El +.Sh FILES +.Bl -tag -width "/etc/synk.confXXX" -compact +.It Pa /etc/synk.conf +default +.Nm +configuration file +.El +.Sh EXAMPLES +Synchronize a file between all peers listed in +.Pa /etc/synk.conf : + +.Dl synk /etc/hosts +.Pp +Synchronize a file with two peers, using different ports for each: + +.Dl synk -p 1234 -h 172.16.0.100 -p 5678 -h 172.16.0.101 $HOME/.profile +.Ed +.Sh SEE ALSO +.Xr synk.conf 5 , +.Xr rsync 1 , +.Xr ssh 1 +.Sh AUTHORS +.An Willy Goiffon Aq Mt willy@mailoo.org