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How to check the version information under Linux, including the number of bits, version information, CPU core information, CPU specific model, etc. The entire CPU information is clear at a glance.
1. Check Linux version and current operating system kernel information
# uname -a
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2. Check the current operating system version information on Linux
# cat /proc/version
3. Check the current operating system release version information on Linux
# cat /etc/issue 或cat /etc/redhat-release
4. Check CPU related information on Linux, including model, main frequency, kernel information, etc.
# cat /proc/cpuinfo
5. Check version description on Linux. The current CPU is running in 32bit mode , but it does not mean that the CPU does not support 64bit
# getconf LONG_BIT
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