Initial

docs/linux/common.md

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+
+[File systems](filesystems.md)
+
+[Fedora / CentOS](fedora.md)
+
+[SELinux](selinux.md)
+
+# Common
+
+## find
+```
+find /var -maxdepth 2 -type d -printf "%TY-%Tm-%Td %TH:%TM:%TS %Tz %p\n"
+```
+
+## bash
+```
+# cat > /etc/profile.d/cmp.sh
+
+export EDITOR=mcedit
+export HISTFILESIZE=10485760
+export HISTSIZE=500000
+export HISTCONTROL=ignoreboth:erasedups
+export HISTIGNORE="history:reboot:poweroff:cd:ls:pwd:mc:ps:m:e:l"
+export SSH_ASKPASS=
+
+alias ffi='ffmpeg -hide_banner -i'
+
+alias m='cd /mnt'
+alias e='cd /etc'
+alias l='cd /var/log'
+
+tabs -4
+
+```
+
+## reboot
+```bash
+echo 1 > /proc/sys/kernel/sysrq
+echo b > /proc/sysrq-trigger
+```
+
+## Motherboard name
+```bash
+cat /sys/devices/virtual/dmi/id/board_name
+```
+
+## grab video from screen
+```bash
+ffmpeg -s 1920x1080 -framerate 10 -f x11grab -i :0 -qscale 6 out.mkv
+```
+
+```bash
+ps --ppid 2 -p 2 --deselect
+```

docs/linux/fedora.md

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+# Fedora / CentOS / Etc
+
+## Relabel
+```bash
+touch /.autorelabel
+```
+
+## Install PHP 8
+```
+dnf install https://rpms.remirepo.net/fedora/remi-release-38.rpm
+dnf module reset php
+dnf module install php:remi-8.2
+```

docs/linux/filesystems.md

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+
+# LVM
+#### Extend
+```bash
+lvextend -L+1G /dev/vg4/homevol
+```
+
+# Btrfs
+#### Resize
+```bash
+btrfs filesystem resize max /mnt/dmp/
+```
+#### Defragment / compress
+```bash
+btrfs filesystem defragment -v -clzo /boot/*
+```
+#### Set RO / RW
+```bash
+btrfs property set -f . ro false
+btrfs property set -f . ro true
+```
+#### Create shapshot
+```bash
+btrfs subvolume snapshot xyz xyz-snapshot-path-name
+```
+#### Delete shapshot
+```bash
+btrfs subvolume delete xyz-snapshot-path-name
+```
+
+# Ext4
+#### Resize
+```bash
+resize2fs /dev/device [size]
+```
+
+#### if superblock fail
+```bash
+dumpe2fs /dev/sda5 | grep -i backup
+fsck -b 32768 /dev/sda5
+```

docs/linux/rsyslog.md

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+```
+$ModLoad imudp
+$UDPServerRun 514
+
+	template(name="cmpDate" type="list") {
+		property(name="timereported" dateformat="year")
+		constant(value="-")
+		property(name="timereported" dateformat="month")
+		constant(value="-")
+		property(name="timereported" dateformat="day")
+	}
+
+
+	set $.cmpDate = exec_template("cmpDate");
+	set $.cmpSuff = "default";
+
+	template(name="cmpOutFile" type="list") {
+		constant(value="/mnt/netlog/zzz/")
+
+		property(name="$.cmpDate")
+
+		constant(value="/")
+	#	property(name="hostname")
+		property(name="fromhost-ip")
+		constant(value="-")
+		property(name="$.cmpSuff")
+		constant(value=".log")
+	}
+
+	template(name="cmpOutFmt" type="list") {
+		property(name="$.cmpDate")
+
+		constant(value=" ")
+		property(name="timereported" dateformat="hour")
+		constant(value=":")
+		property(name="timereported" dateformat="minute")
+		constant(value=":")
+		property(name="timereported" dateformat="second")
+
+		constant(value=" ")
+		property(name="hostname")
+		constant(value=" ")
+
+		property(name="syslogtag")
+		property(name="msg" spifno1stsp="on" )
+		property(name="msg" droplastlf="on" )
+		constant(value="\n")
+	}
+
+
+	if( $fromhost-ip == "127.0.0.1" ) then {
+		stop
+	}
+
+	if ( $fromhost-ip == "172.16.1.1" ) then {
+		if ( $syslogtag contains "teg3" ) then {
+			set $.cmpSuff = "teg3";
+		}
+	}
+
+	action(type="omfile" dynafile="cmpOutFile" template="cmpOutFmt")
+
+	stop
+```

docs/linux/selinux.md

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+
+# Nginx
+```
+# Allow open local  port
+semanage port -a -t http_port_t  -p tcp 28081
+
+# Allow open remote port
+setsebool -P httpd_can_network_connect 1
+```