Systemd `journalctl` - デフォルト $PAGER を変更できません。

SYSTEMD_PAGERSECURE私は実際にそれを見たと思います。 ~からman journalctl:

$SYSTEMD_PAGER
   Pager to use when --no-pager is not given; overrides $PAGER.
   If neither $SYSTEMD_PAGER nor $PAGER are set, a set of
   well-known pager implementations are tried in turn, including
   less(1) and more(1), until one is found. If no pager
   implementation is discovered no pager is invoked. Setting
   this environment variable to an empty string or the value
   "cat" is equivalent to passing --no-pager.

   Note: if $SYSTEMD_PAGERSECURE is not set, $SYSTEMD_PAGER (as
   well as $PAGER) will be silently ignored.

そして：

$SYSTEMD_PAGERSECURE
   Takes a boolean argument. When true, the "secure" mode of the
   pager is enabled; if false, disabled. If $SYSTEMD_PAGERSECURE
   is not set at all, secure mode is enabled if the effective
   UID is not the same as the owner of the login session, see
   geteuid(2) and sd_pid_get_owner_uid(3). In secure mode,
   LESSSECURE=1 will be set when invoking the pager, and the
   pager shall disable commands that open or create new files or
   start new subprocesses. When $SYSTEMD_PAGERSECURE is not set
   at all, pagers which are not known to implement secure mode
   will not be used. (Currently only less(1) implements secure
   mode.)

だからこれはうまくいきます：

SYSTEMD_PAGERSECURE=true PAGER=/usr/bin/ov journalctl