i know you said no docs but sorry bud... youre in unix land!! everything including the kitchen "sync" has a man page. so here we go.

Advanced Bash-Scripting Guide

good starter docs on how to start programming shell scripts.

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however, if you tell us what you are trying to monitor and what not, we can help you along. the commands sar,df,du,vmstat,iostat,prtdiag,prtconf,netstat, etc etc etc are all good basic steps in your direction.

there are plenty of reporting tools out there as well.