sysOp_2.1.4

systemctl start ModemManager.service
#systemctl enable ModemManager.service
systemctl status ModemManager.service
#Szukamy enabled/disabled, active/inactive, vendor preset
ps -aux | grep ModemManager
sudo ls -l /proc/PID/fd
ps --ppid PID_USLUGI

systemctl list-unit-files --type=service
systemctl status auditd.service

logger -p user.info "Anacron started on 2024-03-18";
logger -p user.err "Could not add source 212.51.220.228 : Already in use";
logger -p user.warning " Only 3 apps for recent list, hiding";
logger -p notice " Linux version 6.7.3-200.fc39.x86_64 (mockbuild@bc0b5351bf3d4aa6af9f56bdf5bfb35c) (gcc (GCC) 13.2.1 2023120>";
logger -t kernel " APIC: Static calls initialized";
journalctl --since "5 minutes ago" | head -10;