Manual clean non-exists sysusers

check-sysusers.fish

set -l CHEKC_CACHE_DIR /tmp/check-sysusers
mkdir -p "$CHEKC_CACHE_DIR"

# Print non-exists system users
cat /etc/passwd | string split -f1 ':' | sort >"$CHEKC_CACHE_DIR/current.users"
cat /usr/lib/sysusers.d/* | rg '^u' | string split -n -f2 ' ' | sort >"$CHEKC_CACHE_DIR/preset.users"

set -l list_users (sort "$CHEKC_CACHE_DIR/current.users" "$CHEKC_CACHE_DIR/preset.users" | uniq -u)

if test -n "$list_users"
    echo 'Users are not listed in /usr/lib/sysusers.d/:'
    echo "$list_users"
end

# Print non-exists system groups
cat /etc/group | string split -f1 ':' | sort >"$CHEKC_CACHE_DIR/current.groups"
cat /usr/lib/sysusers.d/* | rg '^u|^g' | string split -n -f2 ' ' | sort >"$CHEKC_CACHE_DIR/preset.groups"

set -l list_groups (sort "$CHEKC_CACHE_DIR/current.groups" "$CHEKC_CACHE_DIR/preset.groups" | uniq -u)

if test -n "$list_groups"
    echo 'Groups are not listed in /usr/lib/sysusers.d/:'
    echo "$list_groups"
end

rm "$CHEKC_CACHE_DIR"/*