groucho@devuan:~$ sudo modprobe -c | grep -i pcc_cpufreq
alias acpi*:ACPI0007:* pcc_cpufreq
alias acpi*:LNXCPU:* pcc_cpufreq
groucho@devuan:~$ 

groucho@devuan:~$ lsmod | grep -i _cpufreq
pcc_cpufreq            16384  0
acpi_cpufreq           24576  1
groucho@devuan:~$ 

groucho@devuan:~$ grep -i _cpufreq /boot/config-4.19.0-16-amd64
CONFIG_X86_PCC_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ=m
CONFIG_X86_ACPI_CPUFREQ_CPB=y
groucho@devuan:~$ 

# use the syslog group by default, since this is the owning group
# of /var/log/syslog.
su root syslog

groucho@devuan:~$ grep syslog /etc/group
groucho@devuan:~$ 

groucho@devuan:~$ ls -l /var/log/syslog
-rw-r----- 1 root adm 4816 Apr  1 13:30 /var/log/syslog
groucho@devuan:~$ 

roucho@devuan:~$ cat /etc/logrotate.conf
# see "man logrotate" for details
# rotate log files weekly
weekly

# keep 4 weeks worth of backlogs
rotate 4

# create new (empty) log files after rotating old ones
create

# uncomment this if you want your log files compressed
compress

# packages drop log rotation information into this directory
include /etc/logrotate.d

# no packages own wtmp, or btmp -- we'll rotate them here
/var/log/wtmp {   <----- | x |
    missingok
    monthly
    create 0664 root utmp
    rotate 1
}

/var/log/btmp {   <----- | x |
    missingok
    monthly
    create 0660 root utmp
    rotate 1
}

# system-specific logs may be configured here
groucho@devuan:~$ 

groucho@devuan:~$ ls -l /usr/sbin/anacron.orig.anacron
-rwxr-xr-x 1 root root 34832 May 19  2019 /usr/sbin/anacron.orig.anacron
groucho@devuan:~$

groucho@devuan:~$
dpkg -S anacron.orig.anacron
diversion by live-config from: /usr/sbin/anacron
diversion by live-config to: /usr/sbin/anacron.orig.anacron
groucho@devuan:~$ 

groucho@devuan:~$ ls -l /usr/sbin/anacron
lrwxrwxrwx 1 root root 20 Apr  1 11:06 /usr/sbin/anacron -> anacron.orig.anacron
groucho@devuan:~$ 

groucho@devuan:~$ dpkg -S /usr/sbin/anacron
diversion by live-config from: /usr/sbin/anacron
diversion by live-config to: /usr/sbin/anacron.orig.anacron
anacron: /usr/sbin/anacron
groucho@devuan:~$ 

groucho@devuan:~$ 
groucho@devuan:~$ sudo /usr/sbin/anacron -s -d -n -f
[sudo] password for groucho: 
Anacron 2.3 started on 2021-04-01
Job `cron.daily' locked by another anacron - skipping
Job `cron.weekly' locked by another anacron - skipping
Job `cron.monthly' locked by another anacron - skipping
Normal exit (0 jobs run)
groucho@devuan:~$ 
groucho@devuan:~$ 

groucho@devuan:~$ ls -l /usr/sbin/anacron.orig.anacron
-rwxr-xr-x 1 root root 34832 May 19  2019 /usr/sbin/anacron.orig.anacron
groucho@devuan:~$ 

groucho@devuan:~$ dpkg -S anacron.orig.anacron
diversion by live-config from: /usr/sbin/anacron
diversion by live-config to: /usr/sbin/anacron.orig.anacron
groucho@devuan:~$ 

groucho@devuan:~$ ls -l /usr/sbin/anacron
lrwxrwxrwx 1 root root 9 Dec  8  2017 /usr/sbin/anacron -> /bin/true
groucho@devuan:~$ 

groucho@devuan:~$ dpkg -S /usr/sbin/anacron
diversion by live-config from: /usr/sbin/anacron
diversion by live-config to: /usr/sbin/anacron.orig.anacron
anacron: /usr/sbin/anacron
groucho@devuan:~$ 

groucho@devuan:~$ aptitude why live-config
i   refractasnapshot-base Depends live-config (>= 2.0.15)
groucho@devuan:~$ 

groucho@devuan:~$ sudo /usr/sbin/anacron -s -d -n -f
[sudo] password for groucho: 
groucho@devuan:~$ 

groucho@devuan:~$ cat /tmp/strace.log
     32311:	
     32311:	WARNING: Unsupported flag value(s) of 0x8000000 in DT_FLAGS_1.
     32311:	
     32311:	file=libc.so.6 [0];  needed by /usr/sbin/anacron [0]
     32311:	find library=libc.so.6 [0]; searching
     32311:	 search cache=/etc/ld.so.cache
     32311:	  trying file=/lib/x86_64-linux-gnu/libc.so.6
     32311:	
     32311:	file=libc.so.6 [0];  generating link map
     32311:	  dynamic: 0x00007feb40805b80  base: 0x00007feb4064b000   size: 0x00000000001c0800
     32311:	    entry: 0x00007feb4066f1b0  phdr: 0x00007feb4064b040  phnum:                 12
     32311:	
     32311:	
     32311:	calling init: /lib/x86_64-linux-gnu/libc.so.6
     32311:	
     32311:	
     32311:	initialize program: /usr/sbin/anacron
     32311:	
     32311:	
     32311:	transferring control: /usr/sbin/anacron
     32311:	
     32311:	
     32311:	calling fini: /usr/sbin/anacron [0]
     32311:	
groucho@devuan:~$ 

groucho@devuan:~$ locate libc.so.6
/lib/i386-linux-gnu/libc.so.6
/lib/x86_64-linux-gnu/libc.so.6
groucho@devuan:~$ 

groucho@devuan:~$ sudo start-stop-daemon -v --start --exec /usr/sbin/anacron -- -s -d -n -f
[sudo] password for groucho: 
Starting /usr/sbin/anacron...
groucho@devuan:~$ 

groucho@devuan:~$ tail -7 /var/log/syslog
Mar 31 20:35:01 devuan CRON[15101]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Mar 31 20:45:01 devuan CRON[16636]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Mar 31 20:55:01 devuan CRON[18468]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Mar 31 21:00:01 devuan CRON[19233]: (root) CMD (timeshift --check --scripted)
Mar 31 21:00:01 devuan crontab[19266]: (root) LIST (root)
Mar 31 21:00:01 devuan crontab[19267]: (root) LIST (root)
Mar 31 21:05:01 devuan CRON[20031]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
groucho@devuan:~$ 

groucho@devuan:~$ sudo strace -f start-stop-daemon -v --start --exec /usr/sbin/anacron -- -s -d -n -f >& /tmp/strace.log 
groucho@devuan:~$ 

groucho@devuan:~$ cat /etc/logrotate.conf
1 # see "man logrotate" for details
2 # rotate log files weekly
3 weekly
4 
5 # keep 4 weeks worth of backlogs
6 rotate 4
7 
8 # create new (empty) log files after rotating old ones
9 create
10 
11 # uncomment this if you want your log files compressed
12 compress
13
14 # packages drop log rotation information into this directory
15 include /etc/logrotate.d
16
17 # no packages own wtmp, or btmp -- we'll rotate them here
18 /var/log/wtmp {          
19     missingok
20     monthly
21     create 0664 root utmp     <--- | x |
22     rotate 1
23  }
24
25 /var/log/btmp {          
26     missingok
27     monthly
28     create 0660 root utmp     <--- | x |
29    rotate 1
30 }
31 
32 # system-specific logs may be configured here
groucho@devuan:~$ 

groucho@devuan:~$ less /var/log/wtmp
"/var/log/wtmp" may be a binary file.  See it anyway? 
groucho@devuan:~$ 

groucho@devuan:~$ less /var/log/btmp
/var/log/btmp: Permission denied
groucho@devuan:~$ 

groucho@devuan:~$ sudo less /var/log/btmp
[sudo] password for groucho: 
"/var/log/btmp" may be a binary file.  See it anyway? 
groucho@devuan:~$ 

groucho@devuan:/etc/cron.daily$ cat testing
#!/bin/sh
# test to write to /var/log
# called from crontab 
#
PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
LOG=/var/log/testing.log
echo "On $(date -R):" >> $LOG
/bin/uname -a >> "$LOG" 2>&1
groucho@devuan:/etc/cron.daily$ 

[root@devuan ~]# /etc/cron.daily/testing
[root@devuan ~]# 

groucho@devuan:/var/log$ cat /var/log/testing.log
On Wed, 31 Mar 2021 18:25:00 -0300:
Linux devuan 4.19.0-16-amd64 #1 SMP Debian 4.19.181-1 (2021-03-19) x86_64 GNU/Linux
groucho@devuan:/var/log$ 

groucho@devuan:/var/log$ crontab -l
--- snip ---
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# ---
# test
# ---

*  *  *  *  *  /etc/cron.daily/testing

# ---
--- snip ---

From groucho@devuan Wed Mar 31 18:32:01 2021
Envelope-to: groucho@devuan
Delivery-date: Wed, 31 Mar 2021 18:32:01 -0300
From: root@devuan (Cron Daemon)
To: groucho@devuan
Subject: Cron <groucho@devuan> /etc/cron.daily/testing
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 8bit
X-Cron-Env: <SHELL=/bin/sh>
X-Cron-Env: <PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin>
X-Cron-Env: <HOME=/home/groucho>
X-Cron-Env: <LOGNAME=groucho>
Date: Wed, 31 Mar 2021 18:32:01 -0300

/etc/cron.daily/testing: 7: /etc/cron.daily/testing: cannot create /var/log/testing.log: Permission denied
/etc/cron.daily/testing: 8: /etc/cron.daily/testing: cannot create /var/log/testing.log: Permission denied

groucho@devuan:/var/log$ ls -l /var/log | grep testing
-rw-r--r-- 1 root        root       120 Mar 31 18:25 testing.log
groucho@devuan:/var/log$ 
groucho@devuan:/var/log$ ls -l /var/log | grep trim.log
-rw-r--r-- 1 root        root         0 Mar 31 16:56 trim.log
groucho@devuan:/var/log$