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If I want to find out the compile options of cgroup (version 1 or version 2), such as the systemd.unified_cgroup_hierarchy it was compiled with, how can I find this?

Evan Carroll
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This information is available with systemd --version, at the bottom. When you run it you'll see something like

systemd 247 (247.1-3+deb11u1)

+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID +ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid

The option you want here is default-hierarchy=hybrid (which is set to change very soon)

Evan Carroll
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