dot_bash_scripts

#!/bin/bash

# Quick HTTPBIN server for request inspection
httpbin() {
	docker run -it --rm --name httpbin -p "${1:-8080}:80" kennethreitz/httpbin
}



# Open any file via xdg-open in the background
function open() {
	nohup xdg-open "$*" > /dev/null 2>&1 &
}



# Synchronize history between bash sessions
#
# Make history from other terminals available to the current one. However,
# don't mix all histories together - make sure that *all* commands from the
# current session are on top of its history, so that pressing up arrow will
# give you most recent command from this session, not from any session.
#
# Since history is saved on each prompt, this additionally protects it from
# terminal crashes.
#
# on every prompt, save new history to dedicated file and recreate full history
# by reading all files, always keeping history from current session on top.
update_history () {
	history -a ${HISTFILE}.$$
	history -c
	history -r # load common history file

	# load histories of other sessions
	for f in `ls ${HISTFILE}.[0-9]* 2>/dev/null | grep -v "${HISTFILE}.$$\$"`; do
		history -r $f
	done

	history -r "${HISTFILE}.$$" # load current session history
}

if [[ "$PROMPT_COMMAND" != *update_history* ]]; then
	export PROMPT_COMMAND="update_history; $PROMPT_COMMAND"
fi

# merge session history into main history file on bash exit
merge_session_history () {
	if [ -e ${HISTFILE}.$$ ]; then
		cat ${HISTFILE}.$$ >> $HISTFILE
		rm ${HISTFILE}.$$
	fi
}
trap merge_session_history EXIT


# detect leftover files from crashed sessions and merge them back
active_shells=$(pgrep `ps -p $$ -o comm=`)
grep_pattern=`for pid in $active_shells; do echo -n "-e \.${pid}\$ "; done`
orphaned_files=`ls $HISTFILE.[0-9]* 2>/dev/null | grep -v $grep_pattern`

if [ -n "$orphaned_files" ]; then
	echo Merging orphaned history files:
	for f in $orphaned_files; do
		echo "	`basename $f`"
		cat $f >> $HISTFILE
		rm $f
	done
	echo "done."
fi