In order to setup eternal bash history for all users: vim /etc/bashrc insert if [ "$BASH" ]; then export HISTTIMEFORMAT="%Y-%m-%d_%H:%M:%S " export PROMPT_COMMAND="${PROMPT_COMMAND:+$PROMPT_COMMAND ; }"'echo "`date +'%y.%m.%d-%H:%M:%S:'`" $USER "("$ORIGINAL_USER")" "COMMAND:…
http://unix4lyfe.org/darkstat/
darkstat is an ntop-workalike network statistics gatherer. It runs as a background process on a cable or DSL router, uses libpcap to capture network traffic, and has a Web interface that serves up reports of statistics such as data transferred by host, port, and protocol. It also has a neat bandwidth usage graph.
The “at” command lets you execute a command or script at a later time, you can set the time in many different ways and even have the result mailed to you after the command has been executed.
Here are some examples: