Re: [9fans] memory

[Robert Raschke <rrplan9@tombob.com>]

After Andrey sent round his useful little script recently, I tarted
it up ever so slightly to show percentages, and since I only think in
MB these days, added some truncating:

cpu% cat /bin/mem
#!/bin/rc

# show available and used memory in
# user-discernible format.

# Thanks goes to Andrey Mirtchovski for the original.

all=`{cat /dev/swap | sed 's,/, ,g'}

pageinmb = `{echo '4096/(1024*1024)' | hoc }

mem = `{echo 'int('^$all(1)^'*'^$pageinmb^')' | hoc }
memtotal = `{echo 'int('^$all(2)^'*'^$pageinmb^')' | hoc}
memperc = `{echo 'int('^$mem^'*100/'^$memtotal^')' | hoc}
swap = `{echo 'int('^$all(4)^'*'^$pageinmb^')' | hoc }
swaptotal = `{echo 'int('^$all(5)^'*'^$pageinmb^')' | hoc}
swapperc = `{echo 'int('^$swap^'*100/'^$swaptotal^')' | hoc}

echo 'memory: '^$mem^' MB used ('^$memperc^'% of '^$memtotal^' MB).'
echo 'swap: '^$swap^' MB used ('^$swapperc^'% of '^$swaptotal^' MB).'

cpu% mem
memory: 37 MB used (42% of 87 MB).
swap: 0 MB used (0% of 512 MB).
cpu%

Robby