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https://github.com/pi-hole/pi-hole
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Merge pull request #2488 from pi-hole/feature/command_function
Moved `command -v` calls to function in installer.
This commit is contained in:
Mark Drobnak
GitHub
commit
2cdbb34763
@ -142,10 +142,19 @@ show_ascii_berry() {
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"
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}
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is_command() {
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# Checks for existence of string passed in as only function argument.
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# Exit value of 0 when exists, 1 if not exists. Value is the result
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# of the `command` shell built-in call.
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local check_command="$1"
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command -v "${check_command}" >/dev/null 2>&1
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}
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# Compatibility
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distro_check() {
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# If apt-get is installed, then we know it's part of the Debian family
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if command -v apt-get &> /dev/null; then
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if is_command apt-get ; then
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# Set some global variables here
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# We don't set them earlier since the family might be Red Hat, so these values would be different
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PKG_MANAGER="apt-get"
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@ -166,7 +175,7 @@ if command -v apt-get &> /dev/null; then
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iproute_pkg="iproute"
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fi
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# Check for and determine version number (major and minor) of current php install
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if command -v php &> /dev/null; then
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if is_command php ; then
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printf " %b Existing PHP installation detected : PHP version %s\\n" "${INFO}" "$(php <<< "<?php echo PHP_VERSION ?>")"
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printf -v phpInsMajor "%d" "$(php <<< "<?php echo PHP_MAJOR_VERSION ?>")"
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printf -v phpInsMinor "%d" "$(php <<< "<?php echo PHP_MINOR_VERSION ?>")"
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@ -227,9 +236,9 @@ if command -v apt-get &> /dev/null; then
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}
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# If apt-get is not found, check for rpm to see if it's a Red Hat family OS
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elif command -v rpm &> /dev/null; then
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elif is_command rpm ; then
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# Then check if dnf or yum is the package manager
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if command -v dnf &> /dev/null; then
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if is_command dnf ; then
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PKG_MANAGER="dnf"
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else
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PKG_MANAGER="yum"
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@ -522,7 +531,7 @@ verifyFreeDiskSpace() {
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printf " %b Your system disk appears to only have %s KB free\\n" "${INFO}" "${existing_free_kilobytes}"
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printf " It is recommended to have a minimum of %s KB to run the Pi-hole\\n" "${required_free_kilobytes}"
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# if the vcgencmd command exists,
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if command -v vcgencmd &> /dev/null; then
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if is_command vcgencmd ; then
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# it's probably a Raspbian install, so show a message about expanding the filesystem
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printf " If this is a new install you may need to expand your disk\\n"
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printf " Run 'sudo raspi-config', and choose the 'expand file system' option\\n"
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@ -814,7 +823,7 @@ setStaticIPv4() {
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# Use ip to immediately set the new address
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ip addr replace dev "${PIHOLE_INTERFACE}" "${IPV4_ADDRESS}"
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# If NetworkMangler command line interface exists and ready to mangle,
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if command -v nmcli &> /dev/null && nmcli general status &> /dev/null; then
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if is_command nmcli && nmcli general status &> /dev/null; then
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# Tell NetworkManagler to read our new sysconfig file
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nmcli con load "${IFCFG_FILE}" > /dev/null
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fi
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@ -1332,7 +1341,7 @@ install_manpage() {
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# Default location for man files for /usr/local/bin is /usr/local/share/man
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# on lightweight systems may not be present, so check before copying.
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printf " %b Testing man page installation" "${INFO}"
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if ! command -v mandb &>/dev/null; then
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if ! is_command mandb ; then
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# if mandb is not present, no manpage support
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printf "%b %b man not installed\\n" "${OVER}" "${INFO}"
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return
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@ -1370,7 +1379,7 @@ stop_service() {
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# Can softfail, as process may not be installed when this is called
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local str="Stopping ${1} service"
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printf " %b %s..." "${INFO}" "${str}"
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if command -v systemctl &> /dev/null; then
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if is_command systemctl ; then
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systemctl stop "${1}" &> /dev/null || true
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else
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service "${1}" stop &> /dev/null || true
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@ -1384,7 +1393,7 @@ start_service() {
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local str="Starting ${1} service"
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printf " %b %s..." "${INFO}" "${str}"
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# If systemctl exists,
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if command -v systemctl &> /dev/null; then
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if is_command systemctl ; then
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# use that to restart the service
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systemctl restart "${1}" &> /dev/null
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# Otherwise,
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@ -1401,7 +1410,7 @@ enable_service() {
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local str="Enabling ${1} service to start on reboot"
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printf " %b %s..." "${INFO}" "${str}"
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# If systemctl exists,
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if command -v systemctl &> /dev/null; then
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if is_command systemctl ; then
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# use that to enable the service
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systemctl enable "${1}" &> /dev/null
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# Otherwise,
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@ -1418,7 +1427,7 @@ disable_service() {
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local str="Disabling ${1} service"
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printf " %b %s..." "${INFO}" "${str}"
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# If systemctl exists,
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if command -v systemctl &> /dev/null; then
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if is_command systemctl ; then
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# use that to disable the service
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systemctl disable "${1}" &> /dev/null
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# Otherwise,
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@ -1431,7 +1440,7 @@ disable_service() {
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check_service_active() {
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# If systemctl exists,
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if command -v systemctl &> /dev/null; then
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if is_command systemctl ; then
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# use that to check the status of the service
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systemctl is-enabled "${1}" &> /dev/null
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# Otherwise,
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@ -1535,7 +1544,7 @@ install_dependent_packages() {
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# amount of download traffic.
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# NOTE: We may be able to use this installArray in the future to create a list of package that were
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# installed by us, and remove only the installed packages, and not the entire list.
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if command -v debconf-apt-progress &> /dev/null; then
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if is_command debconf-apt-progress ; then
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# For each package,
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for i in "${argArray1[@]}"; do
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printf " %b Checking for %s..." "${INFO}" "${i}"
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@ -1684,7 +1693,7 @@ configureFirewall() {
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firewall-cmd --reload
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return 0
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# Check for proper kernel modules to prevent failure
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elif modinfo ip_tables &> /dev/null && command -v iptables &> /dev/null; then
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elif modinfo ip_tables &> /dev/null && is_command iptables ; then
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# If chain Policy is not ACCEPT or last Rule is not ACCEPT
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# then check and insert our Rules above the DROP/REJECT Rule.
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if iptables -S INPUT | head -n1 | grep -qv '^-P.*ACCEPT$' || iptables -S INPUT | tail -n1 | grep -qv '^-\(A\|P\).*ACCEPT$'; then
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@ -1818,7 +1827,7 @@ installPihole() {
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# Give pihole access to the Web server group
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usermod -a -G ${LIGHTTPD_GROUP} pihole
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# If the lighttpd command is executable,
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if [[ -x "$(command -v lighty-enable-mod)" ]]; then
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if is_command lighty-enable-mod ; then
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# enable fastcgi and fastcgi-php
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lighty-enable-mod fastcgi fastcgi-php > /dev/null || true
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else
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@ -1868,7 +1877,7 @@ installPihole() {
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# SELinux
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checkSelinux() {
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# If the getenforce command exists,
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if command -v getenforce &> /dev/null; then
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if is_command getenforce ; then
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# Store the current mode in a variable
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enforceMode=$(getenforce)
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printf "\\n %b SELinux mode detected: %s\\n" "${INFO}" "${enforceMode}"
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@ -2368,7 +2377,7 @@ main() {
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printf " %b Sudo utility check" "${INFO}"
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# If the sudo command exists,
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if command -v sudo &> /dev/null; then
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if is_command sudo ; then
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printf "%b %b Sudo utility check\\n" "${OVER}" "${TICK}"
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# Download the install script and run it with admin rights
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exec curl -sSL https://raw.githubusercontent.com/pi-hole/pi-hole/master/automated%20install/basic-install.sh | sudo bash "$@"
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