Capture the command history before moving between projects

retain-history.sh

#!/bin/sh

#run this in all open terminals 
history -a

# run this in the terminal where history (raw and sorted) is being captured
history -a; history -c; history -r

# capture the history to a file 
# because sometimes order of operations matters
history > raw.hist

# sort the history by command because sometimes 
# we are just looking for a form of a command
cat raw.hist | sed 's/^[ 0-9]*[ ]*//g' | sort -s -u > sorted.hist

# it would be interesting to implement a search 
# feature which allowed me to use a line found in 
# the sorted file and troll the raw file for pre-history
# I think this command should be called 'big-history'