Centos 7 Notes - alex-aleyan/linux_wiki GitHub Wiki

link:

• yum groupinstall "Graphical Administration Tools" "GNOME Desktop"
• ln -sf /lib/systemd/system/runlevel5.target /etc/systemd/system/default.target or systemctl set-default graphical.target

• View system profile

  • sosreport
  • dmidecode
  • lstopo
  • lscpu

• Networking:

  • View Sockets:
    • ss
    • lsof
    • netstat
  • List info:
    • ip addr
    • nmcli dev show
    • teamdctl
    • brctl
    • bridge
  • Configure network:
    • nmcli
    • nmtui
    • nm-connection-editor
  • Monitoring:
    • ''' '''

• Processes:

  • View Usage:
    • top
    • ps
    • sar
    • iostat
    • ss
    • vmstat
    • mpstat
    • numastat
    • tuna
  • Trace lib calls:
    • strace
    • ltrace
  • Kill
    • kill
    • pkill
    • killall
  • Configure Running Process:
    • nice
    • renice
    • taskset

• Services:

  • List Services:

    • systemctl -at service
    • ls /etc/systemd/system/*.service
    • ls /usr/lib/systemd/system/*.service
    • systemctl -t service --state=active
    • systemctl status <name>.service
    • systemctl is-enabled <name>

  • Start/Stop:

    • systemctl start name.service
    • systemctl stop name.service

• Logging:

  • Configure:
    • /etc/rsyslog.conf
    • /etc/rsyslog.d/*.conf
    • /var/log/journal
    • systemd-journald.service
  • View:
    • /var/log
    • journalctl

• Hwardware and Drivers:

  • View Hardware:
    • lshw
    • hwbrowser
  • Configure Hardware:
    • udev
  • View KERNEL Params:
    • rpm -q kernel
    • uname -r
    • sysctl -a
    • cat /proc/cmdline
  • Configure Kernel Module:
    • modprobe
    • modprobe -r