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@svenXY
Forked from bhenderson/tmux-ssh
Last active December 12, 2018 03:57
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Start multiple synchronized SSH connections with Tmux
#!/bin/sh
hosts=""
ssh_options=""
tmux_session_name="cssh"
usage() {
echo "Usage: $0 [options] host [host ...]" >&2
echo "" >&2
echo "Spawns multiple synchronized SSH sessions or windows inside a tmux session." >&2
echo "" >&2
echo "Options:" >&2
echo " -h Show help" >&2
echo " -n <name> Name of the tmux session or window (default: cssh)" >&2
echo " -s Spawn in a new session" >&2
echo " -o <ssh args> Additional SSH arguments" >&2
}
while [ $# -ne 0 ]; do
case $1 in
-n)
shift;
if [ $# -eq 0 ]; then
usage
exit 2
fi
tmux_session_name="$1"; shift
;;
-o)
shift;
if [ $# -eq 0 ]; then
usage
exit 2
fi
ssh_options="$1"; shift
;;
-s)
make_session=1; shift
;;
-h)
usage
exit 0
;;
-*)
usage
exit 2
;;
*)
hosts="${hosts} $1"; shift
;;
esac
done
if [ -z "${hosts}" ]; then
usage
exit 2
fi
if [[ -n "$make_session" ]]; then
# Find a name for a new session
n=0; while tmux has-session -t "${tmux_session_name}-${n}" 2>/dev/null; do n=$(($n + 1)); done
tmux_session="${tmux_session_name}-${n}"
# Open a new session and split into new panes for each SSH session
for host in ${hosts}; do
if ! tmux has-session -t "${tmux_session}" 2>/dev/null; then
tmux new-session -s "${tmux_session}" -d "ssh ${ssh_options} ${host}"
else
tmux split-window -t "${tmux_session}" -d "ssh ${ssh_options} ${host}"
# We have to reset the layout after each new pane otherwise the panes
# quickly become too small to spawn any more
tmux select-layout -t "${tmux_session}" tiled
fi
done
# Synchronize panes by default
tmux set-window-option -t "${tmux_session}" synchronize-panes on
if [ -n "${TMUX}" ]; then
# We are in a tmux, just switch to the new session
tmux switch-client -t "${tmux_session}"
else
# We are NOT in a tmux, attach to the new session
tmux attach-session -t "${tmux_session}"
fi
else
# Find a name for a new window
tmux_session="${tmux_session_name}"
tmux new-window -n "${tmux_session}" "ssh ${ssh_options} ${host}"
# Open a new session and split into new panes for each SSH session
for host in ${hosts}; do
tmux split-window "ssh ${ssh_options} ${host}"
# We have to reset the layout after each new pane otherwise the panes
# quickly become too small to spawn any more
tmux select-layout tiled
done
# Synchronize panes by default
tmux set-window-option synchronize-panes on
if [ -n "${TMUX}" ]; then
# We are in a tmux, just switch to the new window
# should normally not be necessary
tmux select-window -t "${tmux_session}"
else
# We are NOT in a tmux, attach to the new session
session=$(tmux list-sessions -F '#{session_id}' | head -1)
tmux attach-session -t "${session}"
tmux select-window -t "${tmux_session}"
fi
fi
exit 0
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