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Old 05-10-2017, 08:09 AM   #16
montagdude
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Registered: Apr 2016
Distribution: Slackware
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I came across some cases where the shell was not the first child process of xterm. In these cases, this line doesn't work:

Code:
SH_PID=$(echo $(ps --ppid ${WPID} -o pid=) | cut -d' ' -f1)
I fixed that by making a function to pick the correct process from the ps --ppid output. Here's the updated version of the script:

Code:
#!/bin/bash

SHELL=bash

# From child PIDs, gets the one corresponding to the bash shell
function get_shell_pid ()
{
  local WPID=$1
  local SH_PID=""

  PIDS=$(echo $(ps --ppid ${WPID} -o pid=))
  for PID in $PIDS
  do
    CMD=$(echo $(ps --pid $PID) | cut -d' ' -f8)
    if [ "$CMD" == "$SHELL" ]; then
      SH_PID=$PID
      break
    fi
  done

  echo $SH_PID
}

W=$(xdotool getactivewindow)
WPID=$(xdotool getactivewindow getwindowpid)
S1=$(xprop -id ${W} | awk '/WM_CLASS/{print $4}')

if [ "$S1" == '"XTerm"' ]; then
    SH_PID=$(get_shell_pid ${WPID})
    if [ -n "$SH_PID" ]; then
      DIR=$(readlink -e /proc/${SH_PID}/cwd/ | sed 's/ /\\ /g')
      xterm -e "cd ${DIR} && /bin/bash"
    fi
fi

Last edited by montagdude; 05-13-2017 at 10:18 PM. Reason: Make CMD= line work more reliably
 
  


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