Differences

This shows you the differences between two versions of the page.

--- distros:centos [2016/06/24 17:03] – Sean Rhone
+++ distros:centos [2021/06/18 02:38] (current) – removed Sean Rhone
@@ Line 1: / Line 1: @@
-====== Information ======
-  * CentOS 7
-====== Download ======
-  * https://www.centos.org/download
-====== Software ======
-===== Update =====
-****
-  sudo yum clean 'all' && sudo yum update -y && sync
-===== General =====
-****
-  sudo yum install htop p7zip unar aria2 hdparm nano unzip
-====== Settings ======
-==== Nano as default editor ====
-  sudo nano '/etc/sudoers.d/nano'
-  Defaults editor = /usr/bin/nano
-==== Secure Shell ====
-=== Change Listen Port ===
-  * Connect with ssh 'user@IP' -p 'x'
-  sudo -e '/etc/ssh/sshd_config'
-  Port x
-=== Firewall ===
-== New Port ==
-****
-  sudo firewall-cmd --permanent --add-port='x/tcp' && sudo firewall-cmd --reload
-== Remove Old ==
-****
-  sudo firewall-cmd --permanent --remove-service='ssh' && sudo systemctl reboot
-====== Kernel Settings ======
-===== Security =====
-  sudo -e '/etc/sysctl.d/harden.conf'
-  kernel.dmesg_restrict = 1
-  kernel.kptr_restrict = 1
-====== GRUB ======
-===== Timeout =====
-  sudo -e '/etc/default/grub'
-  GRUB_TIMEOUT=3
-===== BIOS Update =====
-  sudo grub2-mkconfig -o '/boot/grub2/grub.cfg'
-====== Automatic Updates ======
-===== Service =====
-  sudo -e '/etc/systemd/system/centos-up.service'
-  [Service]
-  Type=oneshot
-  ExecStart='/usr/bin/yum' clean 'all'
-  ExecStart='/usr/bin/yum' update -y
-  ExecStart='/usr/bin/sync'
-  ExecStart='/usr/bin/systemctl' reboot
-===== Timer =====
-  sudo -e '/etc/systemd/system/centos-up.timer' && sudo systemctl daemon-reload && sudo systemctl enable 'centos-up.timer' --now && sudo systemctl start 'centos-up' && sudo systemctl status 'centos-up' -l
-  [Unit]
-  Description=Software Package Maintenance and Updater
-  Wants=network-online.target
-  [Timer]
-  OnCalendar=*-*-* 06:00:00
-  Persistent=true
-  [Install]
-  WantedBy=timers.target
-====== Steven Black's Unified Hosts File ======
-===== Service =====
-  sudo -e '/etc/systemd/system/hosts-up.service'
-  [Service]
-  Type=oneshot
-  ExecStart='/usr/bin/wget' 'https://github.com/StevenBlack/hosts/archive/master.zip' -O '/tmp/master.zip'
-  ExecStart='/usr/bin/unzip' '/tmp/master.zip' -d '/tmp'
-  ExecStart='/usr/bin/python' '/tmp/hosts-master/updateHostsFile.py' --auto --replace
-  ExecStart='/usr/bin/rm' -R '/tmp/master.zip' '/tmp/hosts-master'
-  ExecStart='/usr/bin/sync'
-===== Timer =====
-  sudo -e '/etc/systemd/system/hosts-up.timer' && sudo systemctl daemon-reload && sudo systemctl enable 'hosts-up.timer' --now && sudo systemctl start 'hosts-up' && sudo systemctl status 'hosts-up' -l
-  [Unit]
-  Description=Hosts File Protection Updater
-  Wants=network-online.target
-  [Timer]
-  OnCalendar=weekly
-  Persistent=true
-  [Install]
-  WantedBy=timers.target
-====== Notable Folders and Commands ======
-===== Show CPU Frequency =====
-  grep 'MHz' '/proc/cpuinfo'
-  watch -n 0.1 grep \'cpu MHz\' '/proc/cpuinfo'
-===== Partition Information =====
-****
-  df -hT
-===== Optimal GCC compiler flags =====
-****
-  gcc -v -E -x c -march=native -mtune=native - < /dev/null 2>&1 | grep cc1 | perl -pe 's/ -mno-\S+//g; s/^.* - //g;'
-===== Remove EXIF data =====
-****
-  exiftool -all= *.* -overwrite_original
-===== FirewallD =====
-==== List Active Rules ====
-****
-  sudo firewall-cmd --list-all
-==== List Available Services ====
-****
-  sudo firewall-cmd --get-service
-==== Reload ====
-****
-  sudo firewall-cmd --reload
-==== Add/Remove Service ====
-  * Add ''--permanent'' as-needed to allow the rule to persist
-  sudo firewall-cmd --add-service=x
-  sudo firewall-cmd --remove-service=x
-==== Add/Remove Service ====
-  * Add ''--permanent'' as-needed to allow the rule to persist
-  * Change ''tcp'' to ''udp'' as-needed
-  sudo firewall-cmd --add-port=x/tcp
-  sudo firewall-cmd --remove-port=x/tcp