How to check whether the Linux and Windows systems are 32-bit or 64-bit

1. in Linux:

1. uname-

Stat @ ttpod :~ $ Uname-
Linux ttpod 2.6.32-21-generic-pae # 32-ubuntu SMP Fri Apr 16 09:39:35 UTC 2010 i686 i686 i386 GNU/Linux

2. File/bin/ls

Stat @ ttpod :~ $ File/bin/ls
/Bin/LS: Elf 32-bit LSB executable, Intel 80386, Version 1 (sysv), dynamically linked (uses SHARED libs), for GNU/Linux 2.6.15, stripped

3. getconf long_bit

Stat @ ttpod :~ $ Getconf long_bit
32

4. CAT/proc/cpuinfo

Stat @ ttpod :~ $ CAT/proc/cpuinfo
Processor: 0
Vendor_id: genuineintel
CPU family: 6
Model: 15
Model name: Intel (r) Pentium (r) Dual CPU e2220 @ 2.40 GHz
Stepping: 13
CPU MHz: 1200.000
Cache size: 1024 KB
Physical ID: 0
Siblings: 2
Core ID: 0
CPU cores: 2
Apicid: 0
Initial apicid: 0
Fdiv_bug: No
Hlt_bug: No
F00f_bug: No
Coma_bug: No
FPU: Yes
Fpu_exception: Yes
Cpuid level: 10
WP: Yes
Flags: fpu vme de pse tsc msr pae mce cx8 APIC Sep mtrr pge mca cmov Pat limit 36 clflush dts acpi mmx fxsr SSE sse2 ss ht tm pbe nx lm limit pebs BTS limit PNI dtes64 monitor limit est TM2 ssse3 cx16 xtpr pdcm lahf_lm
Bogomips: 4799.85
Clflush size: 64
Cache_alignment: 64
Address sizes: 36 bits physical, 48 bits virtual
Power Management:

Ii. Methods in Windows:

1. Enter

Systeminfo

2. My computer-right-click Properties-the memory information under the "physical address extension" is 64-bit, not 32-bit

3. With the software Everest ultimate, the software can