#!/bin/sh
# Get the current working directories of all running SHELLs.

# The `pgrep` line can be replaced with following code block (resulting in two
# while-loops) if only child processes of certain programs (e.g. terminal and
# tmux instances) should be matched.
#
#     pgrep --full "^($TERMINAL|tmux)( |$)" \
#     	| cut -d' ' -f1 \
#     	| while read -r line; do
#     		pgrep -P "$line"
#     	done \

# NOTE: when using the full path not all shell instances are matched
pgrep "$(basename $SHELL)" \
	| cut -d' ' -f1 \
	| while read -r line; do
		pwdx "$line" 2>/dev/null
	done \
	| cut -d' ' -f2- \
	| sort -u