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fix memory statistics on FreeBSD

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The syntax '/ 1024^2' does not work in bash. The other instances of it are piped to bc, where it does work.

Switch to '/ 1024 / 1024' to scale the value to megabytes.

```
bash> echo "ram=$(sysctl -n hw.physmem)"
ram=34194522112
bash> echo "ram_mb=$(( $(sysctl -n hw.physmem) / 1024))"
ram_mb=33393088
bash> echo "ram_mb=$(( $(sysctl -n hw.physmem) / 1024^2))"
ram_mb=33393090
bash> echo "ram_mb=$(( $(sysctl -n hw.physmem) / 1024 / 1024))"
ram_mb=32610
```

This makes the output correct.

On my machine with 32GB of ram:
Before:
```
RAM: 30618762MiB / 33393090MiB
```

After:
```
RAM: 30057MiB / 32768MiB
```
This commit is contained in:
Allan Jude
2018-05-21 14:02:25 -04:00
committed by GitHub
parent 3df218521f
commit 8fc334e54a
1 changed files with 2 additions and 2 deletions
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4
screenfetch-dev
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@@ -1604,7 +1604,7 @@ detectmem () {
size_chip=`echo "$size_chip * 2" | bc`
done
round_mem=`echo "( $size_mem / $size_chip + 1 ) * $size_chip " | bc`
totalmem=$(($round_mem / 1024^2 ))
totalmem=$(($round_mem / 1024 / 1024 ))
pagesize=$(sysctl -n hw.pagesize)
inactive_count=$(sysctl -n vm.stats.vm.v_inactive_count)
inactive_mem=$(($inactive_count * $pagesize))
@@ -1614,7 +1614,7 @@ detectmem () {
free_mem=$(($free_count * $pagesize))
avail_mem=$(($inactive_mem + $cache_mem + $free_mem))
used_mem=$(($round_mem - $avail_mem))
usedmem=$(($used_mem / 1024^2 ))
usedmem=$(($used_mem / 1024 / 1024 ))
elif [ "$distro" == "OpenBSD" ]; then
totalmem=$(($(sysctl -n hw.physmem) / 1024 / 1024))
usedmem=$(vmstat | awk '!/[a-z]/{gsub("M",""); print $3}')