GLIBC version – 9/7/6/5

CentOS Stream release 9:

strings /lib64/libc.so.6 | grep ^GLIBC_
GLIBC_2.2.5
GLIBC_2.2.6
GLIBC_2.3
GLIBC_2.3.2
GLIBC_2.3.3
GLIBC_2.3.4
GLIBC_2.4
GLIBC_2.5
GLIBC_2.6
GLIBC_2.7
GLIBC_2.8
GLIBC_2.9
GLIBC_2.10
GLIBC_2.11
GLIBC_2.12
GLIBC_2.13
GLIBC_2.14
GLIBC_2.15
GLIBC_2.16
GLIBC_2.17
GLIBC_2.18
GLIBC_2.22
GLIBC_2.23
GLIBC_2.24
GLIBC_2.25
GLIBC_2.26
GLIBC_2.27
GLIBC_2.28
GLIBC_2.29
GLIBC_2.30
GLIBC_2.31
GLIBC_2.32
GLIBC_2.33
GLIBC_2.34
GLIBC_PRIVATE
GLIBC_2.8
GLIBC_2.33
GLIBC_2.13
GLIBC_2.6
GLIBC_2.2.6
GLIBC_2.16
GLIBC_2.29
GLIBC_2.25
GLIBC_2.23
GLIBC_2.5

 

centos6.8:

strings /lib64/libc.so.6 | grep GLIBC
GLIBC_2.2.5
GLIBC_2.2.6
GLIBC_2.3
GLIBC_2.3.2
GLIBC_2.3.3
GLIBC_2.3.4
GLIBC_2.4
GLIBC_2.5
GLIBC_2.6
GLIBC_2.7
GLIBC_2.8
GLIBC_2.9
GLIBC_2.10
GLIBC_2.11
GLIBC_2.12
GLIBC_2.13
GLIBC_2.14
GLIBC_2.15
GLIBC_PRIVATE

RHEL5.5

[root@bogon ~]# strings /lib64/libc.so.6 | grep GLIBC
GLIBC_2.2.5
GLIBC_2.2.6
GLIBC_2.3
GLIBC_2.3.2
GLIBC_2.3.3
GLIBC_2.3.4
GLIBC_2.4
GLIBC_2.5
GLIBC_PRIVATE

 

CentOS Linux release 7.3.1611 (Core)

[root@~]# strings /lib64/libc.so.6 | grep GLIBC
GLIBC_2.2.5
GLIBC_2.2.6
GLIBC_2.3
GLIBC_2.3.2
GLIBC_2.3.3
GLIBC_2.3.4
GLIBC_2.4
GLIBC_2.5
GLIBC_2.6
GLIBC_2.7
GLIBC_2.8
GLIBC_2.9
GLIBC_2.10
GLIBC_2.11
GLIBC_2.12
GLIBC_2.13
GLIBC_2.14
GLIBC_2.15
GLIBC_2.16
GLIBC_2.17
GLIBC_PRIVATE

RHEL vs Fedora

Codename: Nahant (based on Fedora Core 3):  Red Hat Enterprise Linux 4

Codename: Tikanga (based on Fedora Core 6):  Red Hat Enterprise Linux 5

Codename: Santiago (based on a mix of Fedora 12, Fedora 13, and several modifications):  Red Hat Enterprise Linux 6

Codename: Maipo (based on a mix of Fedora 19, Fedora 20, and several modifications): Red Hat Enterprise Linux 7

Codename: Ootpa (is based on Fedora 28, upstream Linux kernel 4.18, systemd 239, and GNOME 3.28.): Red Hat Enterprise Linux 8

RHEL5/6/7 final version and kernel

Red Hat Enterprise Linux 5

Release General Availability Date redhat-release Errata Date* Kernel Version
RHEL 5.11 2014-09-16 2014-09-16 RHEA-2014-1238 2.6.18-398

Red Hat Enterprise Linux 6

Release General Availability Date redhat-release Errata Date* Kernel Version
RHEL 6.10 2018-06-19 2018-06-19 RHBA-2018:1856 2.6.32-754

Red Hat Enterprise Linux 7

Release General Availability Date redhat-release Errata Date* Kernel Version
RHEL 7.9 2020-09-29 2020-09-29 RHBA-2020:3849 3.10.0-1160

Note: https://access.redhat.com/articles/3078