brotherhood_of_LAN - 7:10 pm on Sep 28, 2013 (gmt 0)
>show memory usage
I usually use top, take the "used" value and deduct the "cached" value from it to get an idea of memory requirement.
Also found this a while back which I keep having to Google to use, but very handy, display processes and their memory usage in KiloBytes:
ps -e -orss=,args= | sort -b -k1,1n | pr -TW$COLUMNS
Also worth digging around the /proc/ folder to get an idea of setup.