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Create migration to symlink systemd-resolved (#2313)

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* Backup file if modified since system birth
* Symlink /etc/resolv.conf -> systemd-resolve's stub resolver
This commit is contained in:
Samuel Péchèr
2025-10-10 15:18:38 +01:00
committed by GitHub
parent 6b3fc34361
commit 44de66dd2a
1 changed files with 21 additions and 0 deletions
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migrations/1759355846.sh Normal file
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echo "Symlink systemd-resolved to /etc/resolv.conf"
# Backup if /etc/resolv.conf was modified after system birth
system_birth=$(stat -c %W /)
resolvconf_modified=$(stat -c %Y /etc/resolv.conf)
# Run a backup if resolv.conf isn't a symlink and was modified after install
if [[ -s /etc/resolv.conf ]] && [[ ! -L /etc/resolv.conf ]] && [[ $resolvconf_modified > $system_birth ]]; then
# Backup the destination file (with timestamp) to avoid clobbering (Ex: resolv.conf.bak.1753817951)
backup_file="/etc/resolv.conf.bak.$(date +%s)"
# Create backup
sudo cp -f /etc/resolv.conf "$backup_file" 2>/dev/null
# Inform users
echo -e "\e[31mReplaced /etc/resolv.conf with symlink to systemd-resolved. \nSaved backup as ${backup_file}.\e[0m"
echo -e "\e[31mSee https://wiki.archlinux.org/title/Systemd-resolved.\e[0m"
fi
# Write the symlink
sudo ln -sf /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf