bashrc: typo maven checkstyle: style => skip
bashrc: pull execAlarm to a fct
bashrc: split m() among m/maven aliases
bashrc: add alias mc for mvn clean
bashrc: pull install out of maven alias
bashrc: persist exit code in execAlarm
backup: allow negative totals, which is presumably a bug in qgroups
video-sync: add --nomount option to run against nfs without umount+mount
video-sync: add a cache of size/duration for all files in videos dir