fix: Fix shellcheck issues in install.sh (#714)

1 files changed, 8 insertions, 6 deletions

diff --git a/install/install.sh b/install/install.sh
index 94b87e43f..298a3da1b 100755
--- a/install/install.sh
+++ b/install/install.sh
@@ -31,7 +31,6 @@ GREEN="$(tput setaf 2 2>/dev/null || echo '')"
 YELLOW="$(tput setaf 3 2>/dev/null || echo '')"
 BLUE="$(tput setaf 4 2>/dev/null || echo '')"
 MAGENTA="$(tput setaf 5 2>/dev/null || echo '')"
-CYAN="$(tput setaf 6 2>/dev/null || echo '')"
 NO_COLOR="$(tput sgr0 2>/dev/null || echo '')"
 
 info() {
@@ -89,7 +88,8 @@ fetch() {
 #   - linux
 #   - linux_musl (Alpine)
 detect_platform() {
-  local platform="$(uname -s | tr '[:upper:]' '[:lower:]')"
+  local platform
+  platform="$(uname -s | tr '[:upper:]' '[:lower:]')"
 
   # check for MUSL
   if [ "${platform}" = "linux" ]; then
@@ -118,7 +118,8 @@ detect_platform() {
 #   - x86_64
 #   - i386
 detect_arch() {
-  local arch="$(uname -m | tr '[:upper:]' '[:lower:]')"
+  local arch
+  arch="$(uname -m | tr '[:upper:]' '[:lower:]')"
 
   # `uname -m` in some cases mis-reports 32-bit OS as 64-bit, so double check
   if [ "${arch}" = "x64" ] && [ "$(getconf LONG_BIT)" -eq 32 ]; then
@@ -132,7 +133,7 @@ confirm() {
   if [ -z "${FORCE-}" ]; then
     printf "${MAGENTA}?${NO_COLOR} $@ ${BOLD}[y/N]${NO_COLOR} "
     set +e
-    read yn < /dev/tty
+    read -r yn < /dev/tty
     rc=$?
     set -e
     if [ $rc -ne 0 ]; then
@@ -150,7 +151,8 @@ check_bin_dir() {
   local bin_dir="$1"
 
   # https://stackoverflow.com/a/11655875
-  local good=$( IFS=:
+  local good
+  good=$( IFS=:
     for path in $PATH; do
       if [ "${path}" = "${bin_dir}" ]; then
         echo 1
@@ -217,7 +219,7 @@ info "${BOLD}Platform${NO_COLOR}:      ${GREEN}${PLATFORM}${NO_COLOR}"
 info "${BOLD}Arch${NO_COLOR}:          ${GREEN}${ARCH}${NO_COLOR}"
 
 # non-empty VERBOSE enables verbose untarring
-if [ ! -z "${VERBOSE-}" ]; then
+if [ -n "${VERBOSE-}" ]; then
   VERBOSE=v
   info "${BOLD}Verbose${NO_COLOR}: yes"
 else