My notes, things I have learned, and documentation I have created.

mount -t smbfs //username:password@servername/sharename /mountpoint

The following works to perform a network trace for 1 hour (-a duration:3600) and to create multiple files of 10MB in size (-b filesize:10240). Files will have a “test” (-w test) prefix. The “-p” is to capture in promiscus mode. This uses less system resources than trying to achieve the same thing using the wireshark gui.

dumpcap -a duration:3600 -b filesize:10240 -w test -p

To merge all the captures in one file:

mergecap -w bigfile littlefiles

For example:

mergecap -w all.cap one.cap two.cap etc.cap

Or:

mergecap -w all.cap small*.cap

To use tshark (installed with wireshark) to filter a capture without using the GUI (much more efficient):

tshark -R “anydisplayfilters” -r inputfilename -w outputfilename

For example, here are two display filter examples. They are similar to the ones used in wireshark GUI. I kept trying to tcpdump filters, which work fine for capturing.:
tshark -R “ip.addr == 192.168.34.51” -r in.cap -w out-filtered.cap
tshark -R “ip.addr == 192.168.34.0/24” -r in.cap -w out-filtered.cap

Filter notes:
How to filter a time range:
(frame.time >= “mmm dd, yyyy hh:mm:ss”) && (frame.time <= "mmm dd, yyyy hh:mm:ss")

I found the following from the Apple forums (http://discussions.apple.com/thread.jspa?threadID=1203870):

To enable telnet and other Inet services, you edit the files in /System/Library/LaunchDaemons . For telnet, you edit the file /*System/Library/LaunchDaemon/telnet.plist*. Change line 5 from Disabled to Enabled. Then restart your mac. I’m sure there’s a way to avoid having to restart the computer, but I haven’t found it (admittedly, I didn’t spend much time on it) and simply restarting launchd with a killall -HUP launchd didn’t do it.

msiexec /a pathToMsi /qb TAGETDIR=pathToTarget

Worked well with Citrix ICA client package.

Acid2 is a test page, written to help browser vendors ensure proper support for web standards in their products.

http://www.webstandards.org/action/acid2/

Much of this information would be applicable to RedHat and CentOS as well. Information about single user mode, reinstalling grub, lvm in rescure mode, RAID device recovery and dealing with disk images.

Source: http://dailypackage.fedorabook.com/index.php?/categories/11-System-Recovery-Week

Fedora System Recovery information

With the system up:
Get current disk configuration using df, df -h, fdisk -l /dev/ida/c0d0, and fdisk -s /dev/ida/c0d0p7 (for any partitions you want to resize).

Replace the left drive with a 36GB drive, and allow mirror to re-create.

Once completed, replace the right drive with a 36GB drive and allow mirror to re-create.

Boot system off the Smart Start 5.50 CD.

Select Array Configuration Utility.

Click cancel on the message regarding unallocated space.

Select the Logical drive and click Expand. This process takes between 2 and 3 hours to complete.

Boot the system in single user mode.

Make sure all the drives are mounted.

Get current disk configuration using df, df -h, fdisk -l /dev/ida/c0d0, and fdisk -s /dev/ida/c0d0p7 (for any partitions you want to resize). Fdisk should show more available cylinders than before.

Umount /opt.

Umount /dev/ida/c0d0p7.

Fsck -n /dev/ida/c0d0p7.

Tune2fs -O ^has_journal /dev/ida/c0d0p7.

Fdisk /dev/ida/c0d0.

Select p.

# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/ida/c0d0p2 4031872 3481192 345864 91% /
/dev/ida/c0d0p7 6694568 6151136 203368 97% /opt
none 579996 0 579996 0% /dev/shm
/dev/ida/c0d0p6 2602280 2259876 210216 92% /var

# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/ida/c0d0p2 3.8G 3.4G 337M 91% /
/dev/ida/c0d0p7 6.4G 5.9G 198M 97% /opt
none 566M 0 566M 0% /dev/shm
/dev/ida/c0d0p6 2.5G 2.2G 205M 92% /var

# fdisk -l /dev/ida/c0d0

Disk /dev/ida/c0d0: 255 heads, 32 sectors, 8716 cylinders
Units = cylinders of 8160 * 512 bytes

Device Boot Start End Blocks Id System
/dev/ida/c0d0p1 1 9 36704 12 Compaq diagnostics
/dev/ida/c0d0p2 * 10 1013 4096320 83 Linux
/dev/ida/c0d0p3 1014 4357 13643520 5 Extended
/dev/ida/c0d0p5 1014 2042 4198304 82 Linux swap
/dev/ida/c0d0p6 2043 2690 2643824 83 Linux
/dev/ida/c0d0p7 2691 4357 6801344 83 Linux

# lsof /opt

# umount /opt

# fsck -n /dev/ida/c0d0p7
fsck 1.26 (3-Feb-2002)
e2fsck 1.26 (3-Feb-2002)
/opt: clean, 33466/850304 files, 1564478/1700336 blocks

# tune2fs -O ^has_journal /dev/ida/c0d0p7
tune2fs 1.26 (3-Feb-2002)

# fdisk /dev/ida/c0d0

The number of cylinders for this disk is set to 8716.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/ida/c0d0: 255 heads, 32 sectors, 8716 cylinders
Units = cylinders of 8160 * 512 bytes

Device Boot Start End Blocks Id System
/dev/ida/c0d0p1 1 9 36704 12 Compaq diagnostics
/dev/ida/c0d0p2 * 10 1013 4096320 83 Linux
/dev/ida/c0d0p3 1014 4357 13643520 5 Extended
/dev/ida/c0d0p5 1014 2042 4198304 82 Linux swap
/dev/ida/c0d0p6 2043 2690 2643824 83 Linux
/dev/ida/c0d0p7 2691 4357 6801344 83 Linux

Command (m for help): d
Partition number (1-7): 3

Command (m for help): p

Disk /dev/ida/c0d0: 255 heads, 32 sectors, 8716 cylinders
Units = cylinders of 8160 * 512 bytes

Device Boot Start End Blocks Id System
/dev/ida/c0d0p1 1 9 36704 12 Compaq diagnostics
/dev/ida/c0d0p2 * 10 1013 4096320 83 Linux

Command (m for help): n
Command action
e extended
p primary partition (1-4)
e
Partition number (1-4): 3
First cylinder (1014-8716, default 1014):
Using default value 1014
Last cylinder or +size or +sizeM or +sizeK (1014-8716, default 8716):
Using default value 8716

Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (1014-8716, default 1014):
Using default value 1014
Last cylinder or +size or +sizeM or +sizeK (1014-8716, default 8716): 2042

Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (2043-8716, default 2043):
Using default value 2043
Last cylinder or +size or +sizeM or +sizeK (2043-8716, default 8716): 2690

Command (m for help): n
Command action
l logical (5 or over)
p primary partition (1-4)
l
First cylinder (2691-8716, default 2691):
Using default value 2691
Last cylinder or +size or +sizeM or +sizeK (2691-8716, default 8716):
Using default value 8716

Command (m for help): p

Disk /dev/ida/c0d0: 255 heads, 32 sectors, 8716 cylinders
Units = cylinders of 8160 * 512 bytes

Device Boot Start End Blocks Id System
/dev/ida/c0d0p1 1 9 36704 12 Compaq diagnostics
/dev/ida/c0d0p2 * 10 1013 4096320 83 Linux
/dev/ida/c0d0p3 1014 8716 31428240 5 Extended
/dev/ida/c0d0p5 1014 2042 4198304 83 Linux
/dev/ida/c0d0p6 2043 2690 2643824 83 Linux
/dev/ida/c0d0p7 2691 8716 24586064 83 Linux

Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Re-read table failed with error 16: Device or resource busy.
Reboot your system to ensure the partition table is updated.

WARNING: If you have created or modified any DOS 6.x
partitions, please see the fdisk manual page for additional
information.
Syncing disks.

# shutdown -r now

Boot in single user mode

# resize2fs /dev/ida/c0d0p7
resize2fs 1.26 (3-Feb-2002)
The filesystem on /dev/ida/c0d0p7 is now 6146516 blocks long.

# fsck -n /dev/ida/c0d0p7
fsck 1.26 (3-Feb-2002)
e2fsck 1.26 (3-Feb-2002)
/opt: clean, 33466/3074176 files, 1626059/6146516 blocks

# tune2fs -j /dev/ida/c0d0p7
tune2fs 1.26 (3-Feb-2002)
Creating journal inode: done
This filesystem will be automatically checked every -1 mounts or
0 days, whichever comes first. Use tune2fs -c or -i to override.

# shutdown -r now

This is the command I used to mount a cruzer usb stick drive, so that user with uid 502 could write to the drive:

mount -rw -t vfat -o exec,uid=502,umask=0000 /dev/sdb1 /mnt/cardreader

Note: Found the device by doing a fdisk -l after connecting the drive.

Here is what I think is a pretty good example of some different things I was able to do with MAC addresses and assignments with a configuration for dhcp version 3.05. This is the version I tested and implemented this config with:

authoritative;
ddns-update-style none;

option domain-name “domain.name”;
option domain-name-servers xxx.xxx.xxx.xxx;
option subnet-mask 255.xxx.xxx.xxx;
option routers xxx.xxx.xxx.xxx;
option netbios-name-servers xxx.xxx.xxx.xxx;
option netbios-node-type 8;
deny bootp;
default-lease-time 864000; # 10 days
server-name “dhcp.server.name”;

# To assign a particular range to certain NICs
group {
subnet xxx.xxx.xxx.xxx netmask 255.xxx.xxx.xxx {
class “TERMINALS” {
match substring (hardware,1,3);
}
subclass “TERMINALS” 00:80:64;
pool {
allow members of “TERMINALS”;
range xxx.xxx.xxx.1 xxx.xxx.xxx.254;
}
pool {
range xxx.xxx.yyy.1 xxx.xxx.yyy.254;
}

# To statically assign the an address to a particular MAC address
host hostname1 {
hardware ethernet XX:XX:XX:XX:XX:XX;
fixed-address xxx.xxx.zzz.1;
}
host hostname2 {
# hardware ethernet YY:YY:YY:YY:YY:YY;
fixed-address xxx.xxx.zzz.2;
}
}
}

# To offer addresses to remote subnets.
group {
# This is a generic example that will provide only one address.
# The range can be changed to provide more addresses.
subnet zzz.zzz.zzz.0 netmask 255.xxx.xxx.xxx {
range zzz.zzz.zzz.200 zzz.zzz.zzz.200;
}

# This example will only assign one address to a particular MAC address.
# This is the only NIC that will get an address. All others will not be
# offered an address on this subnet.
subnet aaa.aaa.aaa.0 netmask 255.xxx.xxx.xxx {
class “PC” {
match substring (hardware,1,6);
}
subclass “PC” ZZ:ZZ:ZZ:ZZ:ZZ:ZZ;
pool {
allow members of “PC”;
range aaa.aaa.aaa.203 aaa.aaa.aaa.203;
}
}

# This example will open up a range of addresses, and offer the same address
# each time to the NIC with MAC address described as hostname3
subnet bbb.bbb.bbb.0 netmask 255.xxx.xxx.xxx {
range bbb.bbb.bbb.200 bbb.bbb.bbb.210;
group {
host hostname3 {
hardware ethernet AA:AA:AA:AA:AA:AA;
fixed-address bbb.bbb.bbb.222;
}
}

}
}