Fix optional shellcheck warnings

Additionally fix a few code style issues found with shfmt.

1 files changed, 85 insertions, 84 deletions

diff --git a/archiso/mkarchiso b/archiso/mkarchiso
index 470a960..15534bf 100755
--- a/archiso/mkarchiso
+++ b/archiso/mkarchiso
@@ -169,7 +169,7 @@ _cleanup_pacstrap_dir() {
     # Create /etc/machine-id with special value 'uninitialized': the final id is
     # generated on first boot, systemd's first-boot mechanism applies (see machine-id(5))
     rm -f -- "${pacstrap_dir}/etc/machine-id"
-    printf 'uninitialized\n' > "${pacstrap_dir}/etc/machine-id"
+    printf 'uninitialized\n' >"${pacstrap_dir}/etc/machine-id"
 
     _msg_info "Done!"
 }
@@ -204,7 +204,7 @@ _mkairootfs_ext4+squashfs() {
     [[ ! "${quiet}" == "y" ]] || mkfs_ext4_options+=('-q')
     rm -f -- "${pacstrap_dir}.img"
     E2FSPROGS_FAKE_TIME="${SOURCE_DATE_EPOCH}" mkfs.ext4 "${mkfs_ext4_options[@]}" -- "${pacstrap_dir}.img" 32G
-    tune2fs -c 0 -i 0 -- "${pacstrap_dir}.img" > /dev/null
+    tune2fs -c 0 -i 0 -- "${pacstrap_dir}.img" >/dev/null
     _msg_info "Done!"
 
     install -d -m 0755 -- "${isofs_dir}/${install_dir}/${arch}"
@@ -245,9 +245,9 @@ _mkchecksum() {
     _msg_info "Creating checksum file for self-test..."
     cd -- "${isofs_dir}/${install_dir}/${arch}"
     if [[ -e "${isofs_dir}/${install_dir}/${arch}/airootfs.sfs" ]]; then
-        sha512sum airootfs.sfs > airootfs.sha512
+        sha512sum airootfs.sfs >airootfs.sha512
     elif [[ -e "${isofs_dir}/${install_dir}/${arch}/airootfs.erofs" ]]; then
-        sha512sum airootfs.erofs > airootfs.sha512
+        sha512sum airootfs.erofs >airootfs.sha512
     fi
     cd -- "${OLDPWD}"
     _msg_info "Done!"
@@ -280,12 +280,12 @@ _run_once() {
 # Set up custom pacman.conf with custom cache and pacman hook directories.
 _make_pacman_conf() {
     local _cache_dirs _system_cache_dirs _profile_cache_dirs
-    _system_cache_dirs="$(pacman-conf CacheDir| tr '\n' ' ')"
-    _profile_cache_dirs="$(pacman-conf --config "${pacman_conf}" CacheDir| tr '\n' ' ')"
+    _system_cache_dirs="$(pacman-conf CacheDir | tr '\n' ' ')"
+    _profile_cache_dirs="$(pacman-conf --config "${pacman_conf}" CacheDir | tr '\n' ' ')"
 
     # Only use the profile's CacheDir, if it is not the default and not the same as the system cache dir.
-    if [[ "${_profile_cache_dirs}" != "/var/cache/pacman/pkg" ]] && \
-        [[ "${_system_cache_dirs}" != "${_profile_cache_dirs}" ]]; then
+    if [[ "${_profile_cache_dirs}" != "/var/cache/pacman/pkg" ]] \
+        && [[ "${_system_cache_dirs}" != "${_profile_cache_dirs}" ]]; then
         _cache_dirs="${_profile_cache_dirs}"
     else
         _cache_dirs="${_system_cache_dirs}"
@@ -297,9 +297,9 @@ _make_pacman_conf() {
     # append CacheDir and HookDir to [options] section
     # HookDir is *always* set to the airootfs' override directory
     # see `man 8 pacman` for further info
-    pacman-conf --config "${pacman_conf}" | \
-        sed "/CacheDir/d;/DBPath/d;/HookDir/d;/LogFile/d;/RootDir/d;/\[options\]/a CacheDir = ${_cache_dirs}
-        /\[options\]/a HookDir = ${pacstrap_dir}/etc/pacman.d/hooks/" > "${work_dir}/${buildmode}.pacman.conf"
+    pacman-conf --config "${pacman_conf}" \
+        | sed "/CacheDir/d;/DBPath/d;/HookDir/d;/LogFile/d;/RootDir/d;/\[options\]/a CacheDir = ${_cache_dirs}
+        /\[options\]/a HookDir = ${pacstrap_dir}/etc/pacman.d/hooks/" >"${work_dir}/${buildmode}.pacman.conf"
 }
 
 # Prepare working directory and copy custom root file system files.
@@ -314,7 +314,7 @@ _make_custom_airootfs() {
         cp -af --no-preserve=ownership,mode -- "${profile}/airootfs/." "${pacstrap_dir}"
         # Set ownership and mode for files and directories
         for filename in "${!file_permissions[@]}"; do
-            IFS=':' read -ra permissions <<< "${file_permissions["${filename}"]}"
+            IFS=':' read -ra permissions <<<"${file_permissions["${filename}"]}"
             # Prevent file path traversal outside of $pacstrap_dir
             if [[ "$(realpath -q -- "${pacstrap_dir}${filename}")" != "${pacstrap_dir}"* ]]; then
                 _msg_error "Failed to set permissions on '${pacstrap_dir}${filename}'. Outside of valid path." 1
@@ -355,7 +355,7 @@ _make_packages() {
 
     # Unset TMPDIR to work around https://bugs.archlinux.org/task/70580
     if [[ "${quiet}" = "y" ]]; then
-        env -u TMPDIR pacstrap -C "${work_dir}/${buildmode}.pacman.conf" -c -G -M -- "${pacstrap_dir}" "${buildmode_pkg_list[@]}" &> /dev/null
+        env -u TMPDIR pacstrap -C "${work_dir}/${buildmode}.pacman.conf" -c -G -M -- "${pacstrap_dir}" "${buildmode_pkg_list[@]}" &>/dev/null
     else
         env -u TMPDIR pacstrap -C "${work_dir}/${buildmode}.pacman.conf" -c -G -M -- "${pacstrap_dir}" "${buildmode_pkg_list[@]}"
     fi
@@ -399,7 +399,7 @@ _make_customize_airootfs() {
             else
                 _msg_error "Failed to set permissions on '${pacstrap_dir}${passwd[5]}'. Outside of valid path." 1
             fi
-        done < "${profile}/airootfs/etc/passwd"
+        done <"${profile}/airootfs/etc/passwd"
         _msg_info "Done!"
     fi
 
@@ -452,7 +452,7 @@ _make_bootmode_bios.syslinux.mbr() {
              s|%ARCHISO_UUID%|${iso_uuid}|g;
              s|%INSTALL_DIR%|${install_dir}|g;
              s|%ARCH%|${arch}|g" \
-             "${_cfg}" > "${isofs_dir}/boot/syslinux/${_cfg##*/}"
+            "${_cfg}" >"${isofs_dir}/boot/syslinux/${_cfg##*/}"
     done
     if [[ -e "${profile}/syslinux/splash.png" ]]; then
         install -m 0644 -- "${profile}/syslinux/splash.png" "${isofs_dir}/boot/syslinux/"
@@ -527,10 +527,11 @@ _make_efibootimg() {
     fi
 
     # Convert from bytes to KiB and round up to the next full MiB with an additional MiB for reserved sectors.
-    imgsize_kib="$(awk 'function ceil(x){return int(x)+(x>int(x))}
+    imgsize_kib="$(
+        awk 'function ceil(x){return int(x)+(x>int(x))}
             function byte_to_kib(x){return x/1024}
             function mib_to_kib(x){return x*1024}
-            END {print mib_to_kib(ceil((byte_to_kib($1)+1024)/1024))}' <<< "${imgsize_bytes}"
+            END {print mib_to_kib(ceil((byte_to_kib($1)+1024)/1024))}' <<<"${imgsize_bytes}"
     )"
     # The FAT image must be created with mkfs.fat not mformat, as some systems have issues with mformat made images:
     # https://lists.gnu.org/archive/html/grub-devel/2019-04/msg00099.html
@@ -539,7 +540,7 @@ _make_efibootimg() {
     if [[ "${quiet}" == "y" ]]; then
         # mkfs.fat does not have a -q/--quiet option, so redirect stdout to /dev/null instead
         # https://github.com/dosfstools/dosfstools/issues/103
-        mkfs.fat -C -n ARCHISO_EFI "${efibootimg}" "${imgsize_kib}" > /dev/null
+        mkfs.fat -C -n ARCHISO_EFI "${efibootimg}" "${imgsize_kib}" >/dev/null
     else
         mkfs.fat -C -n ARCHISO_EFI "${efibootimg}" "${imgsize_kib}"
     fi
@@ -553,7 +554,7 @@ _make_common_bootmode_grub_copy_to_isofs() {
     local files_to_copy=()
 
     files_to_copy+=("${work_dir}/grub/"*)
-    if compgen -G "${profile}/grub/!(*.cfg)" &> /dev/null; then
+    if compgen -G "${profile}/grub/!(*.cfg)" &>/dev/null; then
         files_to_copy+=("${profile}/grub/"!(*.cfg))
     fi
     install -d -m 0755 -- "${isofs_dir}/boot/grub"
@@ -561,7 +562,7 @@ _make_common_bootmode_grub_copy_to_isofs() {
 }
 
 # Prepare GRUB configuration files
-_make_common_bootmode_grub_cfg(){
+_make_common_bootmode_grub_cfg() {
     local _cfg search_filename
 
     install -d -- "${work_dir}/grub"
@@ -569,7 +570,7 @@ _make_common_bootmode_grub_cfg(){
     # Create a /boot/grub/YYYY-mm-dd-HH-MM-SS-00.uuid file on ISO 9660. GRUB will search for it to find the ISO
     # volume. This is similar to what grub-mkrescue does, except it places the file in /.disk/, but we opt to use a
     # directory that does not start with a dot to avoid it being accidentally missed when copying the ISO's contents.
-    : > "${work_dir}/grub/${iso_uuid}.uuid"
+    : >"${work_dir}/grub/${iso_uuid}.uuid"
     search_filename="/boot/grub/${iso_uuid}.uuid"
 
     # Fill GRUB configuration files
@@ -579,7 +580,7 @@ _make_common_bootmode_grub_cfg(){
              s|%INSTALL_DIR%|${install_dir}|g;
              s|%ARCH%|${arch}|g;
              s|%ARCHISO_SEARCH_FILENAME%|${search_filename}|g" \
-             "${_cfg}" > "${work_dir}/grub/${_cfg##*/}"
+            "${_cfg}" >"${work_dir}/grub/${_cfg##*/}"
     done
 
     # Prepare grub.cfg that will be embedded inside the GRUB binaries
@@ -622,7 +623,7 @@ else
 fi
 EOF
     grubembedcfg="${grubembedcfg//'%ARCHISO_SEARCH_FILENAME%'/"${search_filename}"}"
-    printf '%s\n' "$grubembedcfg" > "${work_dir}/grub-embed.cfg"
+    printf '%s\n' "$grubembedcfg" >"${work_dir}/grub-embed.cfg"
 
     # Write grubenv
     printf '%.1024s' \
@@ -634,7 +635,7 @@ EOF
             "${arch}" \
             "${search_filename}" \
             "$(printf '%0.1s' "#"{1..1024})")" \
-        > "${work_dir}/grub/grubenv"
+        >"${work_dir}/grub/grubenv"
 }
 
 _make_bootmode_uefi-ia32.grub.esp() {
@@ -651,12 +652,12 @@ _make_bootmode_uefi-ia32.grub.esp() {
                  search_fs_file search_fs_uuid search_label serial sleep tpm udf usb usbserial_common usbserial_ftdi \
                  usbserial_pl2303 usbserial_usbdebug video xfs zstd)
     grub-mkstandalone -O i386-efi \
-                      --modules="${grubmodules[*]}" \
-                      --locales="en@quot" \
-                      --themes="" \
-                      --sbat=/usr/share/grub/sbat.csv \
-                      --disable-shim-lock \
-                      -o "${work_dir}/BOOTIA32.EFI" "boot/grub/grub.cfg=${work_dir}/grub-embed.cfg"
+        --modules="${grubmodules[*]}" \
+        --locales="en@quot" \
+        --themes="" \
+        --sbat=/usr/share/grub/sbat.csv \
+        --disable-shim-lock \
+        -o "${work_dir}/BOOTIA32.EFI" "boot/grub/grub.cfg=${work_dir}/grub-embed.cfg"
     # Add GRUB to the list of files used to calculate the required FAT image size.
     efiboot_files+=("${work_dir}/BOOTIA32.EFI"
                     "${pacstrap_dir}/usr/share/edk2-shell/ia32/Shell_Full.efi")
@@ -728,12 +729,12 @@ _make_bootmode_uefi-x64.grub.esp() {
                  search_fs_file search_fs_uuid search_label serial sleep tpm udf usb usbserial_common usbserial_ftdi \
                  usbserial_pl2303 usbserial_usbdebug video xfs zstd)
     grub-mkstandalone -O x86_64-efi \
-                      --modules="${grubmodules[*]}" \
-                      --locales="en@quot" \
-                      --themes="" \
-                      --sbat=/usr/share/grub/sbat.csv \
-                      --disable-shim-lock \
-                      -o "${work_dir}/BOOTx64.EFI" "boot/grub/grub.cfg=${work_dir}/grub-embed.cfg"
+        --modules="${grubmodules[*]}" \
+        --locales="en@quot" \
+        --themes="" \
+        --sbat=/usr/share/grub/sbat.csv \
+        --disable-shim-lock \
+        -o "${work_dir}/BOOTx64.EFI" "boot/grub/grub.cfg=${work_dir}/grub-embed.cfg"
     # Add GRUB to the list of files used to calculate the required FAT image size.
     efiboot_files+=("${work_dir}/BOOTx64.EFI"
                     "${pacstrap_dir}/usr/share/edk2-shell/x64/Shell_Full.efi")
@@ -866,7 +867,7 @@ _make_bootmode_uefi-x64.systemd-boot.eltorito() {
         sed "s|%ARCHISO_LABEL%|${iso_label}|g;
              s|%INSTALL_DIR%|${install_dir}|g;
              s|%ARCH%|${arch}|g" \
-            "${_conf}" > "${isofs_dir}/loader/entries/${_conf##*/}"
+            "${_conf}" >"${isofs_dir}/loader/entries/${_conf##*/}"
     done
 
     # edk2-shell based UEFI shell
@@ -928,13 +929,13 @@ _validate_requirements_bootmode_uefi-x64.systemd-boot.esp() {
     fi
 
     # Check if mkfs.fat is available
-    if ! command -v mkfs.fat &> /dev/null; then
+    if ! command -v mkfs.fat &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${bootmode}': mkfs.fat is not available on this host. Install 'dosfstools'!" 0
     fi
 
     # Check if mmd and mcopy are available
-    if ! { command -v mmd &> /dev/null && command -v mcopy &> /dev/null; }; then
+    if ! { command -v mmd &>/dev/null && command -v mcopy &>/dev/null; }; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${bootmode}': mmd and/or mcopy are not available on this host. Install 'mtools'!" 0
     fi
@@ -978,7 +979,7 @@ _validate_requirements_bootmode_uefi-x64.systemd-boot.eltorito() {
 
 _validate_requirements_bootmode_uefi-ia32.grub.esp() {
     # Check if GRUB is available
-    if ! command -v grub-mkstandalone &> /dev/null; then
+    if ! command -v grub-mkstandalone &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${bootmode}': grub-install is not available on this host. Install 'grub'!" 0
     fi
@@ -1005,19 +1006,19 @@ _validate_requirements_bootmode_uefi-x64.grub.esp() {
     fi
 
     # Check if GRUB is available
-    if ! command -v grub-mkstandalone &> /dev/null; then
+    if ! command -v grub-mkstandalone &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${bootmode}': grub-install is not available on this host. Install 'grub'!" 0
     fi
 
         # Check if mkfs.fat is available
-    if ! command -v mkfs.fat &> /dev/null; then
+    if ! command -v mkfs.fat &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${bootmode}': mkfs.fat is not available on this host. Install 'dosfstools'!" 0
     fi
 
     # Check if mmd and mcopy are available
-    if ! { command -v mmd &> /dev/null && command -v mcopy &> /dev/null; }; then
+    if ! { command -v mmd &>/dev/null && command -v mcopy &>/dev/null; }; then
         _msg_error "Validating '${bootmode}': mmd and/or mcopy are not available on this host. Install 'mtools'!" 0
     fi
 
@@ -1146,14 +1147,14 @@ _sign_netboot_artifacts() {
 }
 
 _validate_requirements_airootfs_image_type_squashfs() {
-    if ! command -v mksquashfs &> /dev/null; then
+    if ! command -v mksquashfs &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${airootfs_image_type}': mksquashfs is not available on this host. Install 'squashfs-tools'!" 0
     fi
 }
 
 _validate_requirements_airootfs_image_type_ext4+squashfs() {
-    if ! { command -v mkfs.ext4 &> /dev/null && command -v tune2fs &> /dev/null; }; then
+    if ! { command -v mkfs.ext4 &>/dev/null && command -v tune2fs &>/dev/null; }; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${airootfs_image_type}': mkfs.ext4 and/or tune2fs is not available on this host. Install 'e2fsprogs'!" 0
     fi
@@ -1161,22 +1162,22 @@ _validate_requirements_airootfs_image_type_ext4+squashfs() {
 }
 
 _validate_requirements_airootfs_image_type_erofs() {
-    if ! command -v mkfs.erofs &> /dev/null; then
+    if ! command -v mkfs.erofs &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating '${airootfs_image_type}': mkfs.erofs is not available on this host. Install 'erofs-utils'!" 0
     fi
 }
 
 _validate_common_requirements_buildmode_all() {
-    if ! command -v pacman &> /dev/null; then
+    if ! command -v pacman &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating build mode '${_buildmode}': pacman is not available on this host. Install 'pacman'!" 0
     fi
-    if ! command -v find &> /dev/null; then
+    if ! command -v find &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating build mode '${_buildmode}': find is not available on this host. Install 'findutils'!" 0
     fi
-    if ! command -v gzip &> /dev/null; then
+    if ! command -v gzip &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating build mode '${_buildmode}': gzip is not available on this host. Install 'gzip'!" 0
     fi
@@ -1200,7 +1201,7 @@ _validate_requirements_buildmode_bootstrap() {
     fi
 
     _validate_common_requirements_buildmode_all
-    if ! command -v bsdtar &> /dev/null; then
+    if ! command -v bsdtar &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating build mode '${_buildmode}': bsdtar is not available on this host. Install 'libarchive'!" 0
     fi
@@ -1237,15 +1238,15 @@ _validate_common_requirements_buildmode_iso_netboot() {
             _msg_error "Two certificates are required for codesigning netboot artifacts, but '${cert_list[*]}' is provided." 0
         fi
 
-        if ! command -v openssl &> /dev/null; then
+        if ! command -v openssl &>/dev/null; then
             (( validation_error=validation_error+1 ))
             _msg_error "Validating build mode '${_buildmode}': openssl is not available on this host. Install 'openssl'!" 0
         fi
     fi
 
     # Check if the specified airootfs_image_type is supported
-    if typeset -f "_mkairootfs_${airootfs_image_type}" &> /dev/null; then
-        if typeset -f "_validate_requirements_airootfs_image_type_${airootfs_image_type}" &> /dev/null; then
+    if typeset -f "_mkairootfs_${airootfs_image_type}" &>/dev/null; then
+        if typeset -f "_validate_requirements_airootfs_image_type_${airootfs_image_type}" &>/dev/null; then
             "_validate_requirements_airootfs_image_type_${airootfs_image_type}"
         else
             _msg_warning "Function '_validate_requirements_airootfs_image_type_${airootfs_image_type}' does not exist. Validating the requirements of '${airootfs_image_type}' airootfs image type will not be possible."
@@ -1265,8 +1266,8 @@ _validate_requirements_buildmode_iso() {
         _msg_error "No boot modes specified in '${profile}/profiledef.sh'." 0
     fi
     for bootmode in "${bootmodes[@]}"; do
-        if typeset -f "_make_bootmode_${bootmode}" &> /dev/null; then
-            if typeset -f "_validate_requirements_bootmode_${bootmode}" &> /dev/null; then
+        if typeset -f "_make_bootmode_${bootmode}" &>/dev/null; then
+            if typeset -f "_validate_requirements_bootmode_${bootmode}" &>/dev/null; then
                 "_validate_requirements_bootmode_${bootmode}"
             else
                 _msg_warning "Function '_validate_requirements_bootmode_${bootmode}' does not exist. Validating the requirements of '${bootmode}' boot mode will not be possible."
@@ -1277,7 +1278,7 @@ _validate_requirements_buildmode_iso() {
         fi
     done
 
-    if ! command -v awk &> /dev/null; then
+    if ! command -v awk &>/dev/null; then
         (( validation_error=validation_error+1 ))
         _msg_error "Validating build mode '${_buildmode}': awk is not available on this host. Install 'awk'!" 0
     fi
@@ -1350,7 +1351,7 @@ _add_xorrisofs_options_uefi-x64.systemd-boot.esp() {
         # A valid GPT prevents BIOS booting on some systems, instead use an invalid GPT (without a protective MBR).
         # The attached partition will have the EFI system partition type code in MBR, but in the invalid GPT it will
         # have a Microsoft basic partition type code.
-        if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.eltorito ' &&  ! " ${bootmodes[*]} " =~ ' uefi-ia32.grub.eltorito ' ]]; then
+        if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.systemd-boot.eltorito ' && ! " ${bootmodes[*]} " =~ ' uefi-ia32.grub.eltorito ' ]]; then
             # If '-isohybrid-gpt-basdat' is specified before '-e', then the appended EFI system partition will have the
             # EFI system partition type ID/GUID in both MBR and GPT. If '-isohybrid-gpt-basdat' is specified after '-e',
             # the appended EFI system partition will have the Microsoft basic data type GUID in GPT.
@@ -1421,7 +1422,7 @@ _add_xorrisofs_options_uefi-x64.grub.esp() {
         # A valid GPT prevents BIOS booting on some systems, instead use an invalid GPT (without a protective MBR).
         # The attached partition will have the EFI system partition type code in MBR, but in the invalid GPT it will
         # have a Microsoft basic partition type code.
-        if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.grub.eltorito ' &&  ! " ${bootmodes[*]} " =~ ' uefi-ia32.grub.eltorito ' ]]; then
+        if [[ ! " ${bootmodes[*]} " =~ ' uefi-x64.grub.eltorito ' && ! " ${bootmodes[*]} " =~ ' uefi-ia32.grub.eltorito ' ]]; then
             # If '-isohybrid-gpt-basdat' is specified before '-e', then the appended EFI system partition will have the
             # EFI system partition type ID/GUID in both MBR and GPT. If '-isohybrid-gpt-basdat' is specified after '-e',
             # the appended EFI system partition will have the Microsoft basic data type GUID in GPT.
@@ -1488,7 +1489,7 @@ _build_bootstrap_image() {
     cd -- "${_bootstrap_parent}"
 
     _msg_info "Creating bootstrap image..."
-    bsdtar -cf - "root.${arch}" | gzip -cn9 > "${out_dir}/${image_name}"
+    bsdtar -cf - "root.${arch}" | gzip -cn9 >"${out_dir}/${image_name}"
     _msg_info "Done!"
     du -h -- "${out_dir}/${image_name}"
     cd -- "${OLDPWD}"
@@ -1515,24 +1516,24 @@ _build_iso_image() {
 
     # Add required xorrisofs options for each boot mode
     for bootmode in "${bootmodes[@]}"; do
-        typeset -f "_add_xorrisofs_options_${bootmode}" &> /dev/null && "_add_xorrisofs_options_${bootmode}"
+        typeset -f "_add_xorrisofs_options_${bootmode}" &>/dev/null && "_add_xorrisofs_options_${bootmode}"
     done
 
     rm -f -- "${out_dir}/${image_name}"
     _msg_info "Creating ISO image..."
     xorriso "${xorriso_options[@]}" -as mkisofs \
-            -iso-level 3 \
-            -full-iso9660-filenames \
-            -joliet \
-            -joliet-long \
-            -rational-rock \
-            -volid "${iso_label}" \
-            -appid "${iso_application}" \
-            -publisher "${iso_publisher}" \
-            -preparer "prepared by ${app_name}" \
-            "${xorrisofs_options[@]}" \
-            -output "${out_dir}/${image_name}" \
-            "${isofs_dir}/"
+        -iso-level 3 \
+        -full-iso9660-filenames \
+        -joliet \
+        -joliet-long \
+        -rational-rock \
+        -volid "${iso_label}" \
+        -appid "${iso_application}" \
+        -publisher "${iso_publisher}" \
+        -preparer "prepared by ${app_name}" \
+        "${xorrisofs_options[@]}" \
+        -output "${out_dir}/${image_name}" \
+        "${isofs_dir}/"
     _msg_info "Done!"
     du -h -- "${out_dir}/${image_name}"
 }
@@ -1592,8 +1593,8 @@ _validate_options() {
 
     # Check if the specified buildmodes are supported
     for _buildmode in "${buildmodes[@]}"; do
-        if typeset -f "_build_buildmode_${_buildmode}" &> /dev/null; then
-            if typeset -f "_validate_requirements_buildmode_${_buildmode}" &> /dev/null; then
+        if typeset -f "_build_buildmode_${_buildmode}" &>/dev/null; then
+            if typeset -f "_validate_requirements_buildmode_${_buildmode}" &>/dev/null; then
                 "_validate_requirements_buildmode_${_buildmode}"
             else
                 _msg_warning "Function '_validate_requirements_buildmode_${_buildmode}' does not exist. Validating the requirements of '${_buildmode}' build mode will not be possible."
@@ -1689,12 +1690,12 @@ _make_version() {
     _msg_info "Creating version files..."
     # Write version file to system installation dir
     rm -f -- "${pacstrap_dir}/version"
-    printf '%s\n' "${iso_version}" > "${pacstrap_dir}/version"
+    printf '%s\n' "${iso_version}" >"${pacstrap_dir}/version"
 
     if [[ "${buildmode}" == @("iso"|"netboot") ]]; then
         install -d -m 0755 -- "${isofs_dir}/${install_dir}"
         # Write version file to ISO 9660
-        printf '%s\n' "${iso_version}" > "${isofs_dir}/${install_dir}/version"
+        printf '%s\n' "${iso_version}" >"${isofs_dir}/${install_dir}/version"
 
     fi
     if [[ "${buildmode}" == "iso" ]]; then
@@ -1704,7 +1705,7 @@ _make_version() {
         rm -f -- "${isofs_dir}/${install_dir}/grubenv"
         printf '%.1024s' "$(printf '# GRUB Environment Block\nNAME=%s\nVERSION=%s\n%s' \
             "${iso_name}" "${iso_version}" "$(printf '%0.1s' "#"{1..1024})")" \
-            > "${isofs_dir}/${install_dir}/grubenv"
+            >"${isofs_dir}/${install_dir}/grubenv"
     fi
 
     # Append IMAGE_ID & IMAGE_VERSION to os-release
@@ -1716,7 +1717,7 @@ _make_version() {
         _msg_warning "os-release file '${_os_release}' is outside of valid path."
     else
         [[ ! -e "${_os_release}" ]] || sed -i '/^IMAGE_ID=/d;/^IMAGE_VERSION=/d' "${_os_release}"
-        printf 'IMAGE_ID=%s\nIMAGE_VERSION=%s\n' "${iso_name}" "${iso_version}" >> "${_os_release}"
+        printf 'IMAGE_ID=%s\nIMAGE_VERSION=%s\n' "${iso_name}" "${iso_version}" >>"${_os_release}"
     fi
 
     # Touch /usr/lib/clock-epoch to give another hint on date and time
@@ -1730,11 +1731,11 @@ _make_pkglist() {
     _msg_info "Creating a list of installed packages on live-enviroment..."
     case "${buildmode}" in
         "bootstrap")
-            pacman -Q --sysroot "${pacstrap_dir}" > "${pacstrap_dir}/pkglist.${arch}.txt"
+            pacman -Q --sysroot "${pacstrap_dir}" >"${pacstrap_dir}/pkglist.${arch}.txt"
             ;;
         "iso"|"netboot")
             install -d -m 0755 -- "${isofs_dir}/${install_dir}"
-            pacman -Q --sysroot "${pacstrap_dir}" > "${isofs_dir}/${install_dir}/pkglist.${arch}.txt"
+            pacman -Q --sysroot "${pacstrap_dir}" >"${isofs_dir}/${install_dir}/pkglist.${arch}.txt"
             ;;
     esac
     _msg_info "Done!"
@@ -1763,7 +1764,7 @@ _build_iso_base() {
     # Create working directory
     _run_once _make_work_dir
     # Write build date to file if it does not exist already
-    [[ -e "${work_dir}/build_date" ]] || printf '%s\n' "$SOURCE_DATE_EPOCH" > "${work_dir}/build_date"
+    [[ -e "${work_dir}/build_date" ]] || printf '%s\n' "$SOURCE_DATE_EPOCH" >"${work_dir}/build_date"
 
     [[ "${quiet}" == "y" ]] || _show_config
     _run_once _make_pacman_conf
@@ -1848,15 +1849,15 @@ _build() {
 
 while getopts 'c:p:C:L:P:A:D:w:m:o:g:G:vrh?' arg; do
     case "${arg}" in
-        p) read -r -a override_pkg_list <<< "${OPTARG}" ;;
+        p) read -r -a override_pkg_list <<<"${OPTARG}" ;;
         C) override_pacman_conf="${OPTARG}" ;;
         L) override_iso_label="${OPTARG}" ;;
         P) override_iso_publisher="${OPTARG}" ;;
         A) override_iso_application="${OPTARG}" ;;
         D) override_install_dir="${OPTARG}" ;;
-        c) read -r -a override_cert_list <<< "${OPTARG}" ;;
+        c) read -r -a override_cert_list <<<"${OPTARG}" ;;
         w) override_work_dir="${OPTARG}" ;;
-        m) read -r -a override_buildmodes <<< "${OPTARG}" ;;
+        m) read -r -a override_buildmodes <<<"${OPTARG}" ;;
         o) override_out_dir="${OPTARG}" ;;
         g) override_gpg_key="${OPTARG}" ;;
         G) override_gpg_sender="${OPTARG}" ;;