install.sh: Add message on error exit and simplify installation command (#9654)

* Add error trap for install.sh

* Disable SC2164

* Add `set -e` back

* Remove source prompt

* Update README.md

README.md

@@ -60,7 +60,7 @@ Open a VT-2 terminal session with <kbd>Ctrl</kbd>+<kbd>Alt</kbd>+<kbd>-></kbd> a
 Then run the installation script below:
 
 ```bash
-exec bash --init-file <(curl -Ls git.io/vddgY)
+bash <(curl -L git.io/vddgY) && . ~/.bashrc
 ```
 
 ## Help

install.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 
 # Exit on fail.
-set -e
+set -eE
 
 RESET='\e[0m'
 
@@ -12,6 +12,9 @@ echo_success() { echo -e "\e[1;32m${*}${RESET}" >&1; } # Use Green for success m
 echo_intra() { echo -e "\e[1;34m${*}${RESET}" >&1; } # Use Blue for intrafunction messages.
 echo_out() { echo -e "\e[0;37m${*}${RESET}" >&1; } # Use Gray for program output.
 
+# Print a message before exit on error
+trap "echo_error 'An error occured during the installation :/'" ERR
+
 # Check if the script is being run as root.
 if [ "${EUID}" == "0" ]; then
   echo_error "Chromebrew should not be installed or run as root."
@@ -368,8 +371,6 @@ echo "  ___ _                               _
  \___/|   |_/   |_/\__/  |  |  |_/|__/\__/   |_/|__/  \_/ \_/
 "
 
-echo_info "Please run 'source ~/.bashrc' to set up the profile environment."
-
 echo_intra "
 Edit ${CREW_PREFIX}/etc/env.d/03-pager to change the default PAGER.
 most is used by default