How to check whether Linux is 32-bit or 64-bit

Method 1:

getconf LONG_BIT

32 is a 32-bit system, 64 is a 64-bit system

Method 2: Use file /sbin/init or file /bin/lscommand

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32-bit is a 32-bit system, 64-bit is a 64-bit system

Method 3:

uname -a

i686 Indicates a 32-bit system, x86_64 indicates a 64-bit system

Note: The screenshot is a 32-bit system of centos6.4

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