root@fred:~# sh /usr/src/linux/scripts/ver_linux
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

Linux fred 2.6.21 #1 PREEMPT Thu Oct 11 20:55:38 CEST 2007 i686 Intel(R) Pentium(R) III CPU family      1400MHz GenuineIntel GNU/Linux

Gnu C                  4.1.2
Gnu make               3.81
binutils               Binutils
util-linux             2.12r
mount                  2.12r
module-init-tools      3.2.2
e2fsprogs              1.39
jfsutils               1.1.11
reiserfsprogs          3.6.19
xfsprogs               2.8.16
pcmciautils            014
quota-tools            3.13.
PPP                    2.4.4
Linux C Library        2.5
Dynamic linker (ldd)   2.5
Linux C++ Library      6.0.8
Procps                 3.2.7
Net-tools              1.60
Kbd                    1.12
oprofile               0.9.2
Sh-utils               6.9
udev                   111
Modules Loaded
root@fred:~# cat /proc/modules
root@fred:~# cat /proc/cpuinfo
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 11
model name      : Intel(R) Pentium(R) III CPU family      1400MHz
stepping        : 1
cpu MHz         : 1470.076
cache size      : 512 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 2
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips        : 2942.39
clflush size    : 32

root@fred:~# cat /proc/meminfo
MemTotal:       516384 kB
MemFree:        488032 kB
Buffers:          2120 kB
Cached:          13872 kB
SwapCached:          0 kB
Active:          10644 kB
Inactive:         8856 kB
SwapTotal:     1076312 kB
SwapFree:      1076312 kB
Dirty:               0 kB
Writeback:           0 kB
AnonPages:        3516 kB
Mapped:           3912 kB
Slab:             5724 kB
SReclaimable:     1608 kB
SUnreclaim:       4116 kB
PageTables:        292 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   1334504 kB
Committed_AS:     8680 kB
VmallocTotal:   516056 kB
VmallocUsed:      4464 kB
VmallocChunk:   511588 kB
root@fred:~# cat /proc/interrupts
           CPU0
  0:     211721    XT-PIC-XT        timer
  1:          8    XT-PIC-XT        i8042
  2:          0    XT-PIC-XT        cascade
  6:          5    XT-PIC-XT        floppy
  8:          1    XT-PIC-XT        rtc
  9:          0    XT-PIC-XT        acpi
 10:      15462    XT-PIC-XT        sym53c8xx, uhci_hcd:usb1, EMU10K1
 12:        114    XT-PIC-XT        i8042
 14:        590    XT-PIC-XT        ohci1394, eth0
 15:       1352    XT-PIC-XT        ide0, ide1
NMI:          0
ERR:          0
root@fred:~# cat /proc/ioports
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : 0000:00:04.1
01f0-01f7 : 0000:00:04.1
02f8-02ff : serial
0376-0376 : 0000:00:04.1
03c0-03df : vesafb
03f2-03f5 : floppy
03f6-03f6 : 0000:00:04.1
03f7-03f7 : floppy DIR
03f8-03ff : serial
0cf8-0cff : PCI conf1
9400-94ff : 0000:00:0e.0
  9400-94ff : r8169
9800-98ff : 0000:00:0d.0
  9800-98ff : sym53c8xx
a000-a007 : 0000:00:09.1
a400-a41f : 0000:00:09.0
  a400-a41f : EMU10K1
a800-a80f : 0000:00:07.0
  a800-a807 : ide0
  a808-a80f : ide1
b000-b003 : 0000:00:07.0
  b002-b002 : ide1
b400-b407 : 0000:00:07.0
  b400-b407 : ide1
b800-b803 : 0000:00:07.0
  b802-b802 : ide0
d000-d007 : 0000:00:07.0
  d000-d007 : ide0
d400-d41f : 0000:00:04.2
  d400-d41f : uhci_hcd
d800-d80f : 0000:00:04.1
e400-e43f : 0000:00:04.3
  e400-e43f : pnp 00:03
    e400-e403 : ACPI PM1a_EVT_BLK
    e404-e405 : ACPI PM1a_CNT_BLK
    e408-e40b : ACPI PM_TMR
    e40c-e40f : ACPI GPE0_BLK
e800-e80f : 0000:00:04.3
  e800-e80f : pnp 00:03
root@fred:~# cat /proc/iomem
00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000cebff : Video ROM
000d0000-000d25ff : Adapter ROM
000f0000-000fffff : System ROM
00100000-1ffebfff : System RAM
  00100000-002fb550 : Kernel code
  002fb551-003b44b3 : Kernel data
1ffec000-1ffeefff : ACPI Tables
1ffef000-1fffefff : reserved
1ffff000-1fffffff : ACPI Non-volatile Storage
30000000-3001ffff : 0000:00:0e.0
d8000000-d80000ff : 0000:00:0e.0
  d8000000-d80000ff : r8169
d8800000-d88000ff : 0000:00:0d.0
  d8800000-d88000ff : sym53c8xx
d9000000-d9003fff : 0000:00:0a.0
d9800000-d98007ff : 0000:00:0a.0
  d9800000-d98007ff : ohci1394
da000000-dbdfffff : PCI Bus #01
  da000000-daffffff : 0000:01:00.0
dbf00000-dfffffff : PCI Bus #01
  dbfe0000-dbffffff : 0000:01:00.0
  dc000000-dfffffff : 0000:01:00.0
    dc000000-dfffffff : vesafb
e0000000-e7ffffff : 0000:00:00.0
ffff0000-ffffffff : reserved
root@fred:~# lspci -vvv
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 03)
        Subsystem: ASUSTeK Computer Inc. Unknown device 8025
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ >SERR- <PERR-
        Latency: 64
        Region 0: Memory at e0000000 (32-bit, prefetchable) [size=128M]
        Capabilities: [a0] AGP version 1.0
                Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW- AGP3- Rate=x1,x2
                Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none>

00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 03) (prog-if 00 [Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B-
        Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: da000000-dbdfffff
        Prefetchable memory behind bridge: dbf00000-dfffffff
        Secondary status: 66MHz+ FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
        BridgeCtl: Parity- SERR- NoISA- VGA+ MAbort- >Reset- FastB2B+

00:04.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 02)
        Control: I/O+ Mem+ BusMaster+ SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 0

00:04.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01) (prog-if 80 [Master])
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [disabled] [size=8]
        Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable) [disabled] [size=1]
        Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [disabled] [size=8]
        Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable) [disabled] [size=1]
        Region 4: I/O ports at d800 [disabled] [size=16]

00:04.2 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB (rev 01) (prog-if 00 [UHCI])
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32
        Interrupt: pin D routed to IRQ 10
        Region 4: I/O ports at d400 [size=32]

00:04.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 02)
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Interrupt: pin ? routed to IRQ 9

00:07.0 IDE interface: Silicon Image, Inc. PCI0648 (rev 01) (prog-if 8f [Master SecP SecO PriP PriO])
        Subsystem: ASUSTeK Computer Inc. CUBX motherboard
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (500ns min, 1000ns max)
        Interrupt: pin A routed to IRQ 15
        Region 0: I/O ports at d000 [size=8]
        Region 1: I/O ports at b800 [size=4]
        Region 2: I/O ports at b400 [size=8]
        Region 3: I/O ports at b000 [size=4]
        Region 4: I/O ports at a800 [size=16]
        Capabilities: [60] Power Management version 1
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=3 PME-

00:09.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 08)
        Subsystem: Creative Labs CT4832 SBLive! Value
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (500ns min, 5000ns max)
        Interrupt: pin A routed to IRQ 10
        Region 0: I/O ports at a400 [size=32]
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:09.1 Input device controller: Creative Labs SB Live! Game Port (rev 08)
        Subsystem: Creative Labs Gameport Joystick
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32
        Region 0: I/O ports at a000 [size=8]
        Capabilities: [dc] Power Management version 1
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0a.0 FireWire (IEEE 1394): Texas Instruments TSB12LV23 IEEE-1394 Controller (prog-if 10 [OHCI])
        Subsystem: Texas Instruments Unknown device 8010
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (750ns min, 1000ns max), Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 14
        Region 0: Memory at d9800000 (32-bit, non-prefetchable) [size=2K]
        Region 1: Memory at d9000000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [44] Power Management version 1
                Flags: PMEClk- DSI- D1- D2+ AuxCurrent=0mA PME(D0-,D1-,D2+,D3hot+,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0d.0 SCSI storage controller: LSI Logic / Symbios Logic 53c810 (rev 23)
        Subsystem: LSI Logic / Symbios Logic LSI53C810AE PCI to SCSI I/O Processor
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (2000ns min, 16000ns max), Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 10
        Region 0: I/O ports at 9800 [size=256]
        Region 1: Memory at d8800000 (32-bit, non-prefetchable) [size=256]
        Capabilities: [40] Power Management version 1
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0e.0 Ethernet controller: D-Link System Inc DGE-528T Gigabit Ethernet Adapter (rev 10)
        Subsystem: D-Link System Inc DGE-528T Gigabit Ethernet Adapter
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 32 (8000ns min, 16000ns max), Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 14
        Region 0: I/O ports at 9400 [size=256]
        Region 1: Memory at d8000000 (32-bit, non-prefetchable) [size=256]
        [virtual] Expansion ROM at 30000000 [disabled] [size=128K]
        Capabilities: [dc] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA PME(D0-,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

01:00.0 VGA compatible controller: nVidia Corporation NV28 [GeForce4 Ti 4200 AGP 8x] (rev a1) (prog-if 00 [VGA])
        Subsystem: Micro-Star International Co., Ltd. Unknown device 8948
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (1250ns min, 250ns max)
        Interrupt: pin A routed to IRQ 11
        Region 0: Memory at da000000 (32-bit, non-prefetchable) [size=16M]
        Region 1: Memory at dc000000 (32-bit, prefetchable) [size=64M]
        Expansion ROM at dbfe0000 [disabled] [size=128K]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [44] AGP version 3.0
                Status: RQ=32 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4
                Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW- Rate=<none>