How to check the number of bits of the system in centos

View method: 1. Use the "getconf LONG_BIT" command; 2. Use the "getconf WORD_BIT" command; 3. Use the "file /bin/ls" command. If "32-bit" appears in the output information, then It is 32-bit, if "64-bit" appears, it is 64-bit.

#The operating environment of this tutorial: centos7 system, thinkpad t480 computer.

How to check how many bits the system is in centos (32-bit or 64-bit)

Int type in 32-bit system and long types are generally 4 bytes. In 64-bit systems, the int type is still 4 bytes, but long has become 8 bytes.

In Linux systems, "getconf WORD_BIT" and "getconf LONG_BIT" can be used to obtain the number of digits of word and long.

You should get 32 ​​and 64 respectively on 64-bit systems.

getconf LONG_BIT

[root@localhost ~]# getconf LONG_BIT
64

getconf WORD_BIT

[root@localhost ~]# getconf WORD_BIT
32

file /bin/ls

[root@localhost ~]# file /bin/ls
/bin/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.18, stripped

You can seeELF 64-bit LSB So the system is 64-bit

Recommended: "centos usage tutorial"

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