Remove a volume
# vxassist -g <dg> remove volume <volume>
Create a volume
# vxassist -g <dg> make <volume> <size>
Change a volume’s owner and permissions
# vxedit -g <dg> set user=<user> group=<group> mode=<perms> <vol>
– rdircio
Linux
Netmask table
| Bitmask (Bits) | Dotted Decimal | Hexadecimal | Binary |
|---|---|---|---|
| /0 | 0.0.0.0 | 0x00000000 | 00000000 00000000 00000000 00000000 |
| /1 | 128.0.0.0 | 0x80000000 | 10000000 00000000 00000000 00000000 |
| /2 | 192.0.0.0 | 0xc0000000 | 11000000 00000000 00000000 00000000 |
| /3 | 224.0.0.0 | 0xe0000000 | 11100000 00000000 00000000 00000000 |
| /4 | 240.0.0.0 | 0xf0000000 | 11110000 00000000 00000000 00000000 |
| /5 | 248.0.0.0 | 0xf8000000 | 11111000 00000000 00000000 00000000 |
| /6 | 252.0.0.0 | 0xfc000000 | 11111100 00000000 00000000 00000000 |
| /7 | 254.0.0.0 | 0xfe000000 | 11111110 00000000 00000000 00000000 |
| /8 | 255.0.0.0 | 0xff000000 | 11111111 00000000 00000000 00000000 |
| /9 | 255.128.0.0 | 0xff800000 | 11111111 10000000 00000000 00000000 |
| /10 | 255.192.0.0 | 0xffc00000 | 11111111 11000000 00000000 00000000 |
| /11 | 255.224.0.0 | 0xffe00000 | 11111111 11100000 00000000 00000000 |
| /12 | 255.240.0.0 | 0xfff00000 | 11111111 11110000 00000000 00000000 |
| /13 | 255.248.0.0 | 0xfff80000 | 11111111 11111000 00000000 00000000 |
| /14 | 255.252.0.0 | 0xfffc0000 | 11111111 11111100 00000000 00000000 |
| /15 | 255.254.0.0 | 0xfffe0000 | 11111111 11111110 00000000 00000000 |
| /16 | 255.255.0.0 | 0xffff0000 | 11111111 11111111 00000000 00000000 |
| /17 | 255.255.128.0 | 0xffff8000 | 11111111 11111111 10000000 00000000 |
| /18 | 255.255.192.0 | 0xffffc000 | 11111111 11111111 11000000 00000000 |
| /19 | 255.255.224.0 | 0xffffe000 | 11111111 11111111 11100000 00000000 |
| /20 | 255.255.240.0 | 0xfffff000 | 11111111 11111111 11110000 00000000 |
| /21 | 255.255.248.0 | 0xfffff800 | 11111111 11111111 11111000 00000000 |
| /22 | 255.255.252.0 | 0xfffffc00 | 11111111 11111111 11111100 00000000 |
| /23 | 255.255.254.0 | 0xfffffe00 | 11111111 11111111 11111110 00000000 |
| /24 | 255.255.255.0 | 0xffffff00 | 11111111 11111111 11111111 00000000 |
| /25 | 255.255.255.128 | 0xffffff80 | 11111111 11111111 11111111 10000000 |
| /26 | 255.255.255.192 | 0xffffffc0 | 11111111 11111111 11111111 11000000 |
| /27 | 255.255.255.224 | 0xffffffe0 | 11111111 11111111 11111111 11100000 |
| /28 | 255.255.255.240 | 0xfffffff0 | 11111111 11111111 11111111 11110000 |
| /29 | 255.255.255.248 | 0xfffffff8 | 11111111 11111111 11111111 11111000 |
| /30 | 255.255.255.252 | 0xfffffffc | 11111111 11111111 11111111 11111100 |
| /31 | 255.255.255.254 | 0xfffffffe | 11111111 11111111 11111111 11111110 |
| /32 | 255.255.255.255 | 0xffffffff | 11111111 11111111 11111111 11111111 |
Set owners and permissions to veritas volumes to be used as rawdevs
vxedit -g my_dg set user=informix group=informix mode=0660 my_volume
Kraftek running now in Rikomagic MK802 IIIs
This website is running in a Rikomagic with Picuntu now, less than 10 watts for a linux webserver+fileserver? 🙂
http://www.kraftek.com/phpsysinfo/index.php?disp=dynamic
Reduce VirtualBox vdi image
if your vdi is larger than the space you’re using, you can reduce its size by installing “zerofree” inside your vm, and booting it in “recovery”, “failsafe” or “single user” mode, remount your “/” filesystem readonly, and supposing “/” is in /dev/sda1
# zerofree /dev/sda1
Shutdown your vm and in the VirtualBox host
# VBoxManage modifyhd linuxy.vdi compact
find out slackware package sizes
grep UNCOMPRESSED /var/log/packages/* | awk -F: '{print $3,$1}' | sort -h
find missing lines
If you want to find the lines “b” is missing from “a”
# fgrep -vxf b a
set xcfe4 as default session
Create the file ~/.xsession with only one line in it:Â xfce4-session
Clear linux cached memory
if you want to clear the linux cached memory run “echo 3 > /proc/sys/vm/drop_caches”
root@pc:~# free total used free shared buffers cached Mem: 3951136 2979376 971760 0 29704 2488576 -/+ buffers/cache: 461096 3490040 Swap: 3050492 2268 3048224 root@pc:~# Â echo 3 > /proc/sys/vm/drop_caches root@pc:~# free total used free shared buffers cached Mem: 3951136 511264 3439872 0 1828 99752 -/+ buffers/cache: 409684 3541452 Swap: 3050492 2268 3048224
it clears it all 🙂
run silent emcgrab
great for scripting 🙂
# ./emcgrab -quiet -legal