some useful linux commands

# best way to see log file
less +F /var/log/syslog
(equals:  less /var/log/syslog, then shift+f)

# see dmesg when it changes
watch -n 0.1 "dmesg | tail -n 30"

# use xargs with find
find . -type x | xargs -I{} --no-run-if-empty file {}