kill dead ssh sessions

wipe-pts.sh

#!/bin/bash
########
# ~ ps ax
#    PID TTY      STAT   TIME COMMAND
#      1 ?        Ss     7:05 /lib/systemd/systemd --system --deserialize 22
#      2 ?        S      0:03 [kthreadd]
#      3 ?        I<     0:00 [rcu_gp]
# ......
#      1787740 pts/1    S+     0:00 grep --color=auto grep
# ~ w
# 11:39:31 up 12 days,  9:41, 15 users,  load average: 0.14, 0.29, 0.27
# USER     TTY      来自           LOGIN@   IDLE   JCPU   PCPU WHAT
# milktea  tty7     :0               246月23 12days  6:28   0.15s /usr/bin/lxsession -s LXDE-pi -e LXDE -w openbox-lxde-p
# milktea  tty1     -                246月23 12days  0.08s  0.07s -bash
# milktea  pts/1    tmux(38850).%8   306月23  0.00s  0.51s  0.01s w
# ......
# ~ # example output of command w and ps
########
current_pts=`ps ax | grep grep | awk '{print $2}'`
echo "current pts is : $current_pts"
w | grep -v tmux | grep pts | grep -v $current_pts | awk '{print $2}' | while read line
do
echo $line
pid=`ps -ft $line | grep -v UID | awk '{print $2}'`
sudo kill -s 9 $pid
# pkill -t pts/1
done