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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
+```