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Some shellchecks in basic-install.sh (#4088)

* Some shellchecks in basic-install.sh

Signed-off-by: ChillerDragon <ChillerDragon@gmail.com>

* Use more explicit grep (thanks to @MichaIng)

Signed-off-by: ChillerDragon <ChillerDragon@gmail.com>
This commit is contained in:
Chiller Dragon 2021-12-02 14:44:50 +01:00 committed by GitHub
parent 941f90d5c1
commit e485a7b9bb
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@ -2,7 +2,7 @@
# shellcheck disable=SC1090
# Pi-hole: A black hole for Internet advertisements
# (c) 2017-2018 Pi-hole, LLC (https://pi-hole.net)
# (c) 2017-2021 Pi-hole, LLC (https://pi-hole.net)
# Network-wide ad blocking via your own hardware.
#
# Installs and Updates Pi-hole
@ -172,7 +172,7 @@ os_check() {
local remote_os_domain valid_os valid_version valid_response detected_os detected_version display_warning cmdResult digReturnCode response
remote_os_domain=${OS_CHECK_DOMAIN_NAME:-"versions.pi-hole.net"}
detected_os=$(grep "\bID\b" /etc/os-release | cut -d '=' -f2 | tr -d '"')
detected_os=$(grep '^ID=' /etc/os-release | cut -d '=' -f2 | tr -d '"')
detected_version=$(grep VERSION_ID /etc/os-release | cut -d '=' -f2 | tr -d '"')
cmdResult="$(dig +short -t txt "${remote_os_domain}" @ns1.pi-hole.net 2>&1; echo $?)"
@ -856,7 +856,7 @@ valid_ip() {
# Regex matching an optional port (starting with '#') range of 1-65536
local portelem="(#(6553[0-5]|655[0-2][0-9]|65[0-4][0-9]{2}|6[0-4][0-9]{3}|[1-5][0-9]{4}|[1-9][0-9]{0,3}|0))?";
# Build a full IPv4 regex from the above subexpressions
local regex="^${ipv4elem}\.${ipv4elem}\.${ipv4elem}\.${ipv4elem}${portelem}$"
local regex="^${ipv4elem}\\.${ipv4elem}\\.${ipv4elem}\\.${ipv4elem}${portelem}$"
# Evaluate the regex, and return the result
[[ $ip =~ ${regex} ]]
@ -1862,7 +1862,7 @@ checkSelinux() {
local CURRENT_SELINUX
local SELINUX_ENFORCING=0
# Check for SELinux configuration file and getenforce command
if [[ -f /etc/selinux/config ]] && command -v getenforce &> /dev/null; then
if [[ -f /etc/selinux/config ]] && is_command getenforce; then
# Check the default SELinux mode
DEFAULT_SELINUX=$(awk -F= '/^SELINUX=/ {print $2}' /etc/selinux/config)
case "${DEFAULT_SELINUX,,}" in
@ -2094,7 +2094,6 @@ clone_or_update_repos() {
# shellcheck disable=SC2120
FTLinstall() {
# Local, named variables
local latesttag
local str="Downloading and Installing FTL"
printf " %b %s..." "${INFO}" "${str}"
@ -2165,7 +2164,7 @@ FTLinstall() {
disable_dnsmasq() {
# dnsmasq can now be stopped and disabled if it exists
if which dnsmasq &> /dev/null; then
if is_command dnsmasq; then
if check_service_active "dnsmasq";then
printf " %b FTL can now resolve DNS Queries without dnsmasq running separately\\n" "${INFO}"
stop_service dnsmasq
@ -2295,7 +2294,7 @@ FTLcheckUpdate() {
local localSha1
# if dnsmasq exists and is running at this point, force reinstall of FTL Binary
if which dnsmasq &> /dev/null; then
if is_command dnsmasq; then
if check_service_active "dnsmasq";then
return 0
fi