how to detect hardware with out rebooting

[unix1adm]

If i install new hardware using a vmguest or physical system How can I detect it.
disk
nic
memory
etc.

In AIX we just run cfgmgr -v. Is there a similar command in Red Hat?

I am guessing a reboot will pick it up if the device drivers are common enough and in the kernel already.

I want to know how to do this dynamically with the system on-line if possible.

[unix1adm]

see some command scsiadd and scsidev mention on a posting but dont seem to have those installed.

i did a yum whatprovides scsidev and scsiadd and nothing comes back.

How do I get those commands?

[Irithori]

you could use
- lspci
- lsusb
- dmesg
- dmidecode
- /proc and /sys pseudofilesystems

dmidecode will give you data like ram slots, inserted dimms, servermodell, serialnumber,..

[unix1adm]

will those commands scan for new hardware?

[devils casper]

Linux detect new hardware automatically.
Execute this

tail -f /var/log/syslog

Insert new Hardware and check if display relevant output or executing dmesg command after inserting new hardware.

Check this link too.

[coopstah13]

Most things can't be inserted into a system without the system being off anyway. You would need a system to support hot swap disks to plug in a disk and linux should pick this up just fine anyway. I've never heard of hot swap of memory. For the most part anything you plug into the motherboard that isn't a USB or some other external bus will not work while it is on.

[unix1adm]

Ok I was alsothingking about EMC disk that get presented to the system after its been booted.