Question

2

Restore default System file/folder permessions

rated 0 times [ 2] [ 0] / answers: 1 / hits: 18752 / 3 Years ago, thu, september 16, 2021, 3:20:20

So I accidentally typed: sudo chmod a-wrx /etc
and since etc contains sudeors.d and many other critical stuff, I couldn't log in/out or perform any administration tasks.

I loaded GRUB and went root from there, I did:

chmod a+wrx /etc

and finally logged to the machine, but it's now messed up (can't shutdown properly, look has changed, ...etc).

How do I restore the default permissions for etc (or any file system) that came shipped with the installation (without reinstalling the system) ?

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answered 3 Years ago sigtestim · Accepted Answer

In the link I posted in comments there is a command to create a file with permissions. I executed it on my machine and got this.

1st do this: https://askubuntu.com/a/309031/15811

Then add these commands to a script (copy/paste; name it restoreetc.sh, make it executable (chmod 775 restoreetc.sh) and execute it (gksudo restoreetc.sh):

chmod a+x /etc/grub.d/20_linux_xen

chmod a+x /etc/grub.d/41_custom

chmod a+x /etc/grub.d/20_memtest86+

chmod a+x /etc/grub.d/00_header

chmod a+x /etc/grub.d/30_uefi-firmware

chmod a+x /etc/grub.d/10_linux

chmod a+x /etc/grub.d/40_custom

chmod a+x /etc/grub.d/05_debian_theme

chmod a+x /etc/grub.d/30_os-prober

chmod a+x /etc/gtk-3.0/settings.ini

chmod a+x /etc/brltty/latex-access.ctb

chmod a+x /etc/security/namespace.init

chmod a+x /etc/dhcp/dhclient-exit-hooks.d/zzz_avahi-autoipd

chmod a+x /etc/dhcp/dhclient-enter-hooks.d/avahi-autoipd

chmod a+x /etc/dhcp/dhclient-enter-hooks.d/samba

chmod a+x /etc/resolvconf/update-libc.d/avahi-daemon

chmod a+x /etc/resolvconf/update.d/libc

chmod a+x /etc/resolvconf/update.d/dnscache

chmod a+x /etc/mysql/debian-start

chmod a+x /etc/X11/xinit/xserverrc

chmod a+x /etc/X11/Xreset

chmod a+x /etc/X11/Xsession

chmod a+x /etc/dkms/template-dkms-mkdeb/debian/prerm

chmod a+x /etc/dkms/template-dkms-mkdeb/debian/postinst

chmod a+x /etc/dkms/template-dkms-mkdeb/debian/rules

chmod a+x /etc/wpa_supplicant/ifupdown.sh

chmod a+x /etc/wpa_supplicant/functions.sh

chmod a+x /etc/wpa_supplicant/action_wpa.sh

chmod a+x /etc/acpi/thinkpad-radiosw.sh

chmod a+x /etc/acpi/powerbtn.sh

chmod a+x /etc/acpi/fglrx-powermode.sh

chmod a+x /etc/acpi/asus-keyboard-backlight.sh

chmod a+x /etc/acpi/asus-wireless.sh

chmod a+x /etc/acpi/tosh-wireless.sh

chmod a+x /etc/acpi/ibm-wireless.sh

chmod a+x /etc/acpi/undock.sh

chmod a+x /etc/network/if-post-down.d/wireless-tools

chmod a+x /etc/network/if-pre-up.d/wireless-tools

chmod a+x /etc/network/if-pre-up.d/ethtool

chmod a+x /etc/network/if-up.d/avahi-autoipd

chmod a+x /etc/network/if-up.d/upstart

chmod a+x /etc/network/if-up.d/avahi-daemon

chmod a+x /etc/network/if-up.d/ethtool

chmod a+x /etc/network/if-up.d/000resolvconf

chmod a+x /etc/network/if-up.d/ntpdate

chmod a+x /etc/network/if-down.d/resolvconf

chmod a+x /etc/network/if-down.d/avahi-autoipd

chmod a+x /etc/network/if-down.d/upstart

chmod a+x /etc/smartd_warning.sh

chmod a+x /etc/init.d/sudo

chmod a+x /etc/init.d/dbus

chmod a+x /etc/init.d/brltty

chmod a+x /etc/init.d/cpufreqd

chmod a+x /etc/init.d/rcS

chmod a+x /etc/init.d/umountroot

chmod a+x /etc/init.d/saned

chmod a+x /etc/init.d/console-setup

chmod a+x /etc/init.d/unattended-upgrades

chmod a+x /etc/init.d/resolvconf

chmod a+x /etc/init.d/mysql

chmod a+x /etc/init.d/vboxautostart-service

chmod a+x /etc/init.d/single

chmod a+x /etc/init.d/loadcpufreq

chmod a+x /etc/init.d/rsync

chmod a+x /etc/init.d/apport

chmod a+x /etc/init.d/udev

chmod a+x /etc/init.d/urandom

chmod a+x /etc/init.d/dns-clean

chmod a+x /etc/init.d/bluetooth

chmod a+x /etc/init.d/vboxweb-service

chmod a+x /etc/init.d/killprocs

chmod a+x /etc/init.d/apparmor

chmod a+x /etc/init.d/lightdm

chmod a+x /etc/init.d/cups

chmod a+x /etc/init.d/rc

chmod a+x /etc/init.d/kmod

chmod a+x /etc/init.d/grub-common

chmod a+x /etc/init.d/vboxdrv

chmod a+x /etc/init.d/atieventsd

chmod a+x /etc/init.d/umountnfs.sh

chmod a+x /etc/init.d/rc.local

chmod a+x /etc/init.d/rsyslog

chmod a+x /etc/init.d/smartmontools

chmod a+x /etc/init.d/avahi-daemon

chmod a+x /etc/init.d/networking

chmod a+x /etc/init.d/bootchart

chmod a+x /etc/init.d/pulseaudio

chmod a+x /etc/init.d/pppd-dns

chmod a+x /etc/init.d/procps

chmod a+x /etc/init.d/tlp

chmod a+x /etc/init.d/halt

chmod a+x /etc/init.d/speech-dispatcher

chmod a+x /etc/init.d/anacron

chmod a+x /etc/init.d/umountfs

chmod a+x /etc/init.d/cpufrequtils

chmod a+x /etc/init.d/sendsigs

chmod a+x /etc/init.d/reboot

chmod a+x /etc/init.d/ondemand

chmod a+x /etc/init.d/x11-common

chmod a+x /etc/init.d/vboxballoonctrl-service

chmod a+x /etc/init.d/acpid

chmod a+x /etc/init.d/irqbalance

chmod a+x /etc/init.d/cups-browsed

chmod a+x /etc/init.d/kerneloops

chmod a+x /etc/pm/sleep.d/10_grub-common

chmod a+x /etc/pm/sleep.d/10_unattended-upgrades-hibernate

chmod a+x /etc/pm/sleep.d/novatel_3g_suspend

chmod a+x /etc/ppp/ipv6-down

chmod a+x /etc/ppp/ip-up.d/0dns-up

chmod a+x /etc/ppp/ip-up.d/0000usepeerdns

chmod a+x /etc/ppp/ip-up.d/000resolvconf

chmod a+x /etc/ppp/ip-down.d/0000usepeerdns

chmod a+x /etc/ppp/ip-down.d/0dns-down

chmod a+x /etc/ppp/ip-down.d/000resolvconf

chmod a+x /etc/ppp/ip-down

chmod a+x /etc/ppp/pppoe_on_boot

chmod a+x /etc/ppp/ipv6-up

chmod a+x /etc/ppp/ip-up

chmod a+x /etc/rmt

chmod a+x /etc/rc.local

chmod a+x /etc/cron.daily/0anacron

chmod a+x /etc/cron.daily/man-db

chmod a+x /etc/cron.daily/upstart

chmod a+x /etc/cron.daily/apport

chmod a+x /etc/cron.daily/update-notifier-common

chmod a+x /etc/cron.daily/cracklib-runtime

chmod a+x /etc/cron.daily/passwd

chmod a+x /etc/cron.daily/mlocate

chmod a+x /etc/cron.daily/bsdmainutils

chmod a+x /etc/cron.daily/popularity-contest

chmod a+x /etc/cron.daily/dpkg

chmod a+x /etc/cron.daily/apt

chmod a+x /etc/cron.daily/logrotate

chmod a+x /etc/smartmontools/run.d/10mail

chmod a+x /etc/smartmontools/run.d/10powersave-notify

chmod a+x /etc/NetworkManager/dispatcher.d/99tlp-rdw-nm

chmod a+x /etc/NetworkManager/dispatcher.d/01ifupdown

chmod a+x /etc/apm/event.d/20hdparm

chmod a+x /etc/apm/event.d/anacron

chmod a+x /etc/apm/scripts.d/alsa

chmod a+x /etc/update-motd.d/91-release-upgrade

chmod a+x /etc/update-motd.d/98-fsck-at-reboot

chmod a+x /etc/update-motd.d/10-help-text

chmod a+x /etc/update-motd.d/98-reboot-required

chmod a+x /etc/update-motd.d/00-header

chmod a+x /etc/update-motd.d/90-updates-available

chmod a+x /etc/cron.weekly/0anacron

chmod a+x /etc/cron.weekly/man-db

chmod a+x /etc/cron.weekly/fstrim

chmod a+x /etc/cron.weekly/update-notifier-common

chmod a+x /etc/cron.weekly/apt-xapian-index

chmod a+x /etc/avahi/avahi-autoipd.action

chmod a+x /etc/cron.monthly/0anacron

chmod a+x /etc/kernel/postinst.d/zz-update-grub

chmod a+x /etc/kernel/postinst.d/dkms

chmod a+x /etc/kernel/postinst.d/pm-utils

chmod a+x /etc/kernel/postinst.d/apt-auto-removal

chmod a+x /etc/kernel/postinst.d/initramfs-tools

chmod a+x /etc/kernel/header_postinst.d/dkms

chmod a+x /etc/kernel/postrm.d/zz-update-grub

chmod a+x /etc/kernel/postrm.d/initramfs-tools

chmod a+x /etc/kernel/prerm.d/dkms

chmod a+x /etc/pcmcia/comedi

chmod a+x /etc/ca-certificates/update.d/jks-keystore