fix_bash_sessions.groovy

def lines = new File('/Users/mmally/temp/bash_history_merged').readLines()

def entries = new TreeMap<Long, String>()
def text = lines
        .collate(2)
        .collectEntries(entries) { time, cmd ->
    [(time - '#').toLong(), cmd]
}.collectMany { k, v ->
    ["#$k", v]
}.join('\n')
new File('/Users/mmally/temp/bash_history_merged_sorted').text = text