Grub.d/10_linux file issue

Hi,

I’ve been toying with grub, and I didn’t backup the file ‘/etc/grub.d/10_linux’.

The reason I was changing it, was due to the dodgy looking grub entries… they displayed weird things.
eg. 'EndeavourOS on Linux on linux"

If someone can provide an updated version of the ‘/etc/grub.d/10_linux’ file, that hasn’t got this issue, that would be great, otherwise could somebody post the contents of a default file? I can’t find it on the github.

Cheers

You can just reinstall grub. That will bring the default file back.

sudo pacman -S grub

As a side note, modifying that file is fairly pointless as your changes will be overwritten every time the package updates.

If you really want it, here is the default file contents
#! /bin/sh
set -e

# grub-mkconfig helper script.
# Copyright (C) 2006,2007,2008,2009,2010  Free Software Foundation, Inc.
#
# GRUB is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# GRUB is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GRUB.  If not, see <http://www.gnu.org/licenses/>.

prefix="/usr"
exec_prefix="/usr"
datarootdir="/usr/share"

. "$pkgdatadir/grub-mkconfig_lib"

export TEXTDOMAIN=grub
export TEXTDOMAINDIR="${datarootdir}/locale"

CLASS="--class gnu-linux --class gnu --class os"

if [ "x${GRUB_DISTRIBUTOR}" = "x" ] ; then
  OS=Linux
else
  OS="${GRUB_DISTRIBUTOR} Linux"
  CLASS="--class $(echo ${GRUB_DISTRIBUTOR} | tr 'A-Z' 'a-z' | cut -d' ' -f1|LC_ALL=C sed 's,[^[:alnum:]_],_,g') ${CLASS}"
fi

# loop-AES arranges things so that /dev/loop/X can be our root device, but
# the initrds that Linux uses don't like that.
case ${GRUB_DEVICE} in
  /dev/loop/*|/dev/loop[0-9])
    GRUB_DEVICE=`losetup ${GRUB_DEVICE} | sed -e "s/^[^(]*(\([^)]\+\)).*/\1/"`
  ;;
esac

if [ "x${GRUB_CMDLINE_LINUX_RECOVERY}" = "x" ] ; then
  GRUB_CMDLINE_LINUX_RECOVERY=single
fi

# Default to disabling partition uuid support to maintian compatibility with
# older kernels.
GRUB_DISABLE_LINUX_PARTUUID=${GRUB_DISABLE_LINUX_PARTUUID-true}

# btrfs may reside on multiple devices. We cannot pass them as value of root= parameter
# and mounting btrfs requires user space scanning, so force UUID in this case.
if ( [ "x${GRUB_DEVICE_UUID}" = "x" ] && [ "x${GRUB_DEVICE_PARTUUID}" = "x" ] ) \
    || ( [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ] \
        && [ "x${GRUB_DISABLE_LINUX_PARTUUID}" = "xtrue" ] ) \
    || ( ! test -e "/dev/disk/by-uuid/${GRUB_DEVICE_UUID}" \
        && ! test -e "/dev/disk/by-partuuid/${GRUB_DEVICE_PARTUUID}" ) \
    || ( test -e "${GRUB_DEVICE}" && uses_abstraction "${GRUB_DEVICE}" lvm ); then
  LINUX_ROOT_DEVICE=${GRUB_DEVICE}
elif [ "x${GRUB_DEVICE_UUID}" = "x" ] \
    || [ "x${GRUB_DISABLE_LINUX_UUID}" = "xtrue" ]; then
  LINUX_ROOT_DEVICE=PARTUUID=${GRUB_DEVICE_PARTUUID}
else
  LINUX_ROOT_DEVICE=UUID=${GRUB_DEVICE_UUID}
fi

case x"$GRUB_FS" in
    xbtrfs)
        rootsubvol="`make_system_path_relative_to_its_root /`"
        rootsubvol="${rootsubvol#/}"
        if [ "x${rootsubvol}" != x ]; then
            GRUB_CMDLINE_LINUX="rootflags=subvol=${rootsubvol} ${GRUB_CMDLINE_LINUX}"
        fi;;
    xzfs)
        rpool=`${grub_probe} --device ${GRUB_DEVICE} --target=fs_label 2>/dev/null || true`
        bootfs="`make_system_path_relative_to_its_root / | sed -e "s,@$,,"`"
        LINUX_ROOT_DEVICE="ZFS=${rpool}${bootfs%/}"
        ;;
esac

title_correction_code=

linux_entry ()
{
  os="$1"
  version="$2"
  type="$3"
  args="$4"

  if [ -z "$boot_device_id" ]; then
      boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
  fi
  if [ x$type != xsimple ] ; then
      case $type in
          booster)
              title="$(gettext_printf "%s, with Linux %s (booster initramfs)" "${os}" "${version}")" ;;
          fallback)
              title="$(gettext_printf "%s, with Linux %s (fallback initramfs)" "${os}" "${version}")" ;;
          recovery)
              title="$(gettext_printf "%s, with Linux %s (recovery mode)" "${os}" "${version}")" ;;
          *)
              title="$(gettext_printf "%s, with Linux %s" "${os}" "${version}")" ;;
      esac
      if [ x"$title" = x"$GRUB_ACTUAL_DEFAULT" ] || [ x"Previous Linux versions>$title" = x"$GRUB_ACTUAL_DEFAULT" ]; then
          replacement_title="$(echo "Advanced options for ${OS}" | sed 's,>,>>,g')>$(echo "$title" | sed 's,>,>>,g')"
          quoted="$(echo "$GRUB_ACTUAL_DEFAULT" | grub_quote)"
          title_correction_code="${title_correction_code}if [ \"x\$default\" = '$quoted' ]; then default='$(echo "$replacement_title" | grub_quote)'; fi;"
          grub_warn "$(gettext_printf "Please don't use old title \`%s' for GRUB_DEFAULT, use \`%s' (for versions before 2.00) or \`%s' (for 2.00 or later)" "$GRUB_ACTUAL_DEFAULT" "$replacement_title" "gnulinux-advanced-$boot_device_id>gnulinux-$version-$type-$boot_device_id")"
      fi
      echo "menuentry '$(echo "$title" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-$version-$type-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
  else
      echo "menuentry '$(echo "$os" | grub_quote)' ${CLASS} \$menuentry_id_option 'gnulinux-simple-$boot_device_id' {" | sed "s/^/$submenu_indentation/"
  fi      
  if [ x$type != xrecovery ] ; then
      save_default_entry | grub_add_tab
  fi

  # Use ELILO's generic "efifb" when it's known to be available.
  # FIXME: We need an interface to select vesafb in case efifb can't be used.
  if [ "x$GRUB_GFXPAYLOAD_LINUX" = x ]; then
      echo "    load_video" | sed "s/^/$submenu_indentation/"
      if grep -qx "CONFIG_FB_EFI=y" "${config}" 2> /dev/null \
          && grep -qx "CONFIG_VT_HW_CONSOLE_BINDING=y" "${config}" 2> /dev/null; then
          echo "        set gfxpayload=keep" | sed "s/^/$submenu_indentation/"
      fi
  else
      if [ "x$GRUB_GFXPAYLOAD_LINUX" != xtext ]; then
          echo "        load_video" | sed "s/^/$submenu_indentation/"
      fi
      echo "    set gfxpayload=$GRUB_GFXPAYLOAD_LINUX" | sed "s/^/$submenu_indentation/"
  fi

  echo "        insmod gzio" | sed "s/^/$submenu_indentation/"

  if [ x$dirname = x/ ]; then
    if [ -z "${prepare_root_cache}" ]; then
      prepare_root_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE} | grub_add_tab)"
    fi
    printf '%s\n' "${prepare_root_cache}" | sed "s/^/$submenu_indentation/"
  else
    if [ -z "${prepare_boot_cache}" ]; then
      prepare_boot_cache="$(prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | grub_add_tab)"
    fi
    printf '%s\n' "${prepare_boot_cache}" | sed "s/^/$submenu_indentation/"
  fi
  message="$(gettext_printf "Loading Linux %s ..." ${version})"
  sed "s/^/$submenu_indentation/" << EOF
        echo    '$(echo "$message" | grub_quote)'
        linux   ${rel_dirname}/${basename} root=${linux_root_device_thisversion} rw ${args}
EOF
  if test -n "${initrd}" ; then
    # TRANSLATORS: ramdisk isn't identifier. Should be translated.
    message="$(gettext_printf "Loading initial ramdisk ...")"
    initrd_path=
    for i in ${initrd}; do
      initrd_path="${initrd_path} ${rel_dirname}/${i}"
    done
    sed "s/^/$submenu_indentation/" << EOF
        echo    '$(echo "$message" | grub_quote)'
        initrd  $(echo $initrd_path)
EOF
  fi
  sed "s/^/$submenu_indentation/" << EOF
}
EOF
}

machine=`uname -m`
case "x$machine" in
    xi?86 | xx86_64)
        list=
        for i in /boot/vmlinuz-* /vmlinuz-* /boot/kernel-* ; do
            if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done ;;
    *) 
        list=
        for i in /boot/vmlinuz-* /boot/vmlinux-* /vmlinuz-* /vmlinux-* /boot/kernel-* ; do
                  if grub_file_is_not_garbage "$i" ; then list="$list $i" ; fi
        done ;;
esac

case "$machine" in
    i?86) GENKERNEL_ARCH="x86" ;;
    mips|mips64) GENKERNEL_ARCH="mips" ;;
    mipsel|mips64el) GENKERNEL_ARCH="mipsel" ;;
    arm*) GENKERNEL_ARCH="arm" ;;
    *) GENKERNEL_ARCH="$machine" ;;
esac

prepare_boot_cache=
prepare_root_cache=
boot_device_id=
title_correction_code=

# Extra indentation to add to menu entries in a submenu. We're not in a submenu
# yet, so it's empty. In a submenu it will be equal to '\t' (one tab).
submenu_indentation=""

# Perform a reverse version sort on the entire list.
# Temporarily replace the '.old' suffix by ' 1' and append ' 2' for all
# other files to order the '.old' files after their non-old counterpart
# in reverse-sorted order.

reverse_sorted_list=$(echo $list | tr ' ' '\n' | sed -e 's/\.old$/ 1/; / 1$/! s/$/ 2/' | version_sort -r | sed -e 's/ 1$/.old/; s/ 2$//')

is_top_level=true
for linux in ${reverse_sorted_list}; do
  gettext_printf "Found linux image: %s\n" "$linux" >&2
  basename=`basename $linux`
  dirname=`dirname $linux`
  rel_dirname=`make_system_path_relative_to_its_root $dirname`
  version=`echo $basename | sed -e "s,vmlinuz-,,g"`
  alt_version=`echo $version | sed -e "s,\.old$,,g"`
  linux_root_device_thisversion="${LINUX_ROOT_DEVICE}"

  initrd_early=
  for i in ${GRUB_EARLY_INITRD_LINUX_STOCK} \
           ${GRUB_EARLY_INITRD_LINUX_CUSTOM}; do
    if test -e "${dirname}/${i}" ; then
      initrd_early="${initrd_early} ${i}"
    fi
  done

  initrd_real=
  for i in "initrd.img-${version}" "initrd-${version}.img" \
           "initrd-${alt_version}.img.old" "initrd-${version}.gz" \
           "initrd-${alt_version}.gz.old" "initrd-${version}" \
           "initramfs-${version}.img" "initramfs-${alt_version}.img.old" \
           "initrd.img-${alt_version}" "initrd-${alt_version}.img" \
           "initrd-${alt_version}" "initramfs-${alt_version}.img" \
           "initramfs-genkernel-${version}" \
           "initramfs-genkernel-${alt_version}" \
           "initramfs-genkernel-${GENKERNEL_ARCH}-${version}" \
           "initramfs-genkernel-${GENKERNEL_ARCH}-${alt_version}"; do
    if test -e "${dirname}/${i}" ; then
      initrd_real="${i}"
      break
    fi
  done

  initrd=
  if test -n "${initrd_early}" || test -n "${initrd_real}"; then
    initrd="${initrd_early} ${initrd_real}"

    initrd_display=
    for i in ${initrd}; do
      initrd_display="${initrd_display} ${dirname}/${i}"
    done
    gettext_printf "Found initrd image: %s\n" "$(echo $initrd_display)" >&2
  fi

  config=
  for i in "${dirname}/config-${version}" "${dirname}/config-${alt_version}" "/etc/kernels/kernel-config-${version}" ; do
    if test -e "${i}" ; then
      config="${i}"
      break
    fi
  done

  initramfs=
  if test -n "${config}" ; then
      initramfs=`grep CONFIG_INITRAMFS_SOURCE= "${config}" | cut -f2 -d= | tr -d \"`
  fi

  if test -z "${initramfs}" && test -z "${initrd_real}" ; then
    # "UUID=" and "ZFS=" magic is parsed by initrd or initramfs.  Since there's
    # no initrd or builtin initramfs, it can't work here.
    if [ "x${GRUB_DEVICE_PARTUUID}" = "x" ] \
        || [ "x${GRUB_DISABLE_LINUX_PARTUUID}" = "xtrue" ]; then

        linux_root_device_thisversion=${GRUB_DEVICE}
    else
        linux_root_device_thisversion=PARTUUID=${GRUB_DEVICE_PARTUUID}
    fi
  fi

  # The GRUB_DISABLE_SUBMENU option used to be different than others since it was
  # mentioned in the documentation that has to be set to 'y' instead of 'true' to
  # enable it. This caused a lot of confusion to users that set the option to 'y',
  # 'yes' or 'true'. This was fixed but all of these values must be supported now.
  if [ "x${GRUB_DISABLE_SUBMENU}" = xyes ] || [ "x${GRUB_DISABLE_SUBMENU}" = xy ]; then
    GRUB_DISABLE_SUBMENU="true"
  fi

  if [ "x$is_top_level" = xtrue ] && [ "x${GRUB_DISABLE_SUBMENU}" != xtrue ]; then
    linux_entry "${OS}" "${version}" simple \
    "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"

    submenu_indentation="$grub_tab"
    
    if [ -z "$boot_device_id" ]; then
        boot_device_id="$(grub_get_device_id "${GRUB_DEVICE}")"
    fi
    # TRANSLATORS: %s is replaced with an OS name
    echo "submenu '$(gettext_printf "Advanced options for %s" "${OS}" | grub_quote)' \$menuentry_id_option 'gnulinux-advanced-$boot_device_id' {"
    is_top_level=false
  fi

  linux_entry "${OS}" "${version}" advanced \
              "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"

  if test -e "${dirname}/initramfs-${version}-fallback.img" ; then
    initrd="${initrd_early} initramfs-${version}-fallback.img"

    if test -n "${initrd}" ; then
      gettext_printf "Found fallback initrd image(s) in %s:%s\n" "${dirname}" "${initrd_extra} ${initrd}" >&2
    fi

    linux_entry "${OS}" "${version}" fallback \
                "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
  fi

  if test -e "${dirname}/booster-${version}.img" ; then
    initrd="${initrd_early} booster-${version}.img"

    if test -n "${initrd}" ; then
      gettext_printf "Found booster initrd image(s) in %s:%s\n" "${dirname}" "${initrd_extra} ${initrd}" >&2
    fi

    linux_entry "${OS}" "${version}" booster \
                "${GRUB_CMDLINE_LINUX} ${GRUB_CMDLINE_LINUX_DEFAULT}"
  fi

  if [ "x${GRUB_DISABLE_RECOVERY}" != "xtrue" ]; then
    linux_entry "${OS}" "${version}" recovery \
                "${GRUB_CMDLINE_LINUX_RECOVERY} ${GRUB_CMDLINE_LINUX}"
  fi
done

# If at least one kernel was found, then we need to
# add a closing '}' for the submenu command.
if [ x"$is_top_level" != xtrue ]; then
  echo '}'
fi

echo "$title_correction_code"

It doesn’t live in github in an absolute sense.

The source file is in the grub git repo but it is patched by the Arch PKGBUILD. You could extract it from the Arch package but it would probably just be easier to reinstall the grub package as recommended above.

Ahh ok, good to know. I’ll try that.

So whats the alternative… for more ‘permanent’ changes without using grub-customizer…
I’ve been looking around the forums, and grub-customizer has a fairly bad name, to say the least :laughing:

You could create an alpm hook to modify the file when the package changes. That is what EndeavourOS was doing before we decided to not do that anymore.

This is the sed statement that was being used to do that:

    sed -i /etc/grub.d/10_linux \
        -e "s|s, with Linux |s, on |" \
        -e 's|"Loading Linux |"Loading kernel |' \
        -e 's|^  OS="${GRUB_DISTRIBUTOR} Linux"$|  OS="${GRUB_DISTRIBUTOR}"|'

It is worth noting that if the file 10_linux changes this may stop working or have unexpected impact.

1 Like

Ahh I see.
I just googled alpm hooks, and they look fairly interesting.
Here’s the link for future viewers that are interested: alpm-hooks (ArchLinux docs)

Thank you @dalto for explaining these things, I’m learning so much.
I’ll mark this thread as solved, but just out of curiousity, what were the entries in the grub menu supposed to look like… (obviously, assuming they were not supposed to display things like I mentioned before)

I am not sure what you mean. The file provided upstream from grub really does name them that way. It seems to be intentional. However, it looks worse in this case because Arch names it’s kernel “linux”. Normally, that last linux would be the name of the kernel.

1 Like

That actually does answer my question. Thank you

This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.