fix

README.md

@@ -31,11 +31,12 @@ Any feedback would be appreciated.
 ## install
 
 ```bash
-curl -s https://git.artcode.re/miaou/miaou-bash/raw/branch/main/install.sh | sudo bash && exec bash
+curl -s https://git.artcode.re/miaou/miaou-bash/raw/branch/main/install.sh | sudo -E bash && exec bash
 ```
 
 ## upgrade
 
+TODO: self-upgrade
 `upgrade-miaou-bash`
 
 ## uninstall

bin/miaou-bash

@@ -265,6 +265,14 @@ function on_error {
   fi
 }
 
+function self_upgrade {
+  sudo -E "$MIAOU_BASH_DIR/lib/self-upgrade.bash"
+}
+
+function uninstall {
+  echo "TODO: uninstall"
+}
+
 function populate_error_arrays {
 
   local source=$1 line=$2 payload=$3
@@ -601,7 +609,7 @@ function cleanup {
 }
 
 function usage {
-  echo "$(basename "$0") <SCRIPT> [...SCRIPT_ARGS] | --version | --help"
+  echo "$(basename "$0") <SCRIPT> [...SCRIPT_ARGS] | --version | --help | --self-upgrade | --uninstall"
 }
 
 function parse_options {
@@ -609,6 +617,8 @@ function parse_options {
   [[ $# == 1 ]] && case "$1" in
   --help) usage && builtin exit ;;
   --version) cat "$MIAOU_BASH_DIR/.semver_git_tag" && builtin exit ;;
+  --self-upgrade) self_upgrade && builtin exit ;;
+  --uninstall) uninstall && builtin exit ;;
   -*) >&2 echo "ERROR: option '$1' unknown!" && usage && builtin exit 2 ;;
   esac
   [[ $1 =~ ^- ]] && >&2 echo "ERROR: too many args $#, either single option or SCRIPT + args accepted!" && builtin exit 2

lib/self-upgrade.bash

@@ -6,6 +6,14 @@
 
 # MAIN
 
-[ "$UID" -ne 0 ] && echo 'root privilege required' && exit 1
+[[ "$UID" -ne 0 ]] && echo 'root privilege required' && exit 1
 
-echo TODO: self-upgrade
+current=$(miaou-bash --version)
+latest=$("$MIAOU_BASH_DIR/tools/wget_semver" artcode miaou/miaou-bash)
+
+if [[ "$current" == "$latest" ]]; then
+  echo "up-to-date version: $current"
+  MIAOU_BASH_DIR='' source ../install.sh
+else
+  MIAOU_BASH_DIR='' source ../install.sh
+fi