fix symlink error

install

@@ -329,18 +329,18 @@ wo_update_wp_cli()
 {
     
     WP_CLI_PATH=$(command -v wp)
-    if [ -n "$WP_CLI_PATH" ]; then
+    if [ "$WP_CLI_PATH" != "/usr/local/bin/wp" ]; then
         rm -rf "$WP_CLI_PATH"
         # Update WP-CLI to the most recent version
         wget -qO /usr/local/bin/wp https://raw.githubusercontent.com/WordOps/wpcli-builds/gh-pages/phar/wp-cli.phar
         chmod +x /usr/local/bin/wp
-        ln -s /usr/local/bin/wp /usr/bin/
     else
         wget -qO /usr/local/bin/wp https://raw.githubusercontent.com/WordOps/wpcli-builds/gh-pages/phar/wp-cli.phar
         chmod +x /usr/local/bin/wp
-        ln -s /usr/local/bin/wp /usr/bin/
     fi
-    
+    [ ! -x /usr/bin/wp ] && {
+        ln -s /usr/local/bin/wp /usr/bin/
+    }
     [ -d /etc/bash_completion.d ] && {
         wget -qO /etc/bash_completion.d/wp-completion.bash https://raw.githubusercontent.com/wp-cli/wp-cli/master/utils/wp-completion.bash
     }
@@ -695,7 +695,7 @@ else
         secure_wo_db | tee -ai $wo_install_log
         wo_git_init | tee -ai $wo_install_log
         wo_update_wp_cli | tee -ai $wo_install_log
-        echo -ne "${TPUT_ECHO}Installing Wordops $wo_branch           ${TPUT_RESET}[OK]\r"
+        echo -ne "${TPUT_ECHO}Running post-install steps             ${TPUT_RESET}[OK]\r"
         echo -ne '\n'
     fi
 fi