zsh: fix autoupgrade script for antidote

brethil_dotfile.sh

@@ -39,12 +39,12 @@ if [[ ! ${zsh_plugins}.zsh -nt ${zsh_plugins}.txt ]]; then
 
     antidote bundle <${zsh_plugins}.txt >>${zsh_plugins}.zsh
 
-    if [[ $+commands[systemctl] ]]; then
+    if (( $+commands[systemctl] )); then
        antidote bundle robbyrussell/oh-my-zsh path:plugins/systemd >>${zsh_plugins}.zsh
     fi
-    if [[ $+commands[pacman] ]]; then
+    if (( $+commands[pacman] )); then
       antidote bundle robbyrussell/oh-my-zsh path:plugins/archlinux >>${zsh_plugins}.zsh
-    elif [[ $+commands[apt-get] ]]; then
+    elif (( $+commands[apt-get] )); then
       antidote bundle robbyrussell/oh-my-zsh path:plugins/debian >>${zsh_plugins}.zsh
     fi
 
@@ -60,7 +60,7 @@ source $DOTFILES/extras/completion_style.zsh
 source $DOTFILES/extras/colors.zsh
 source $DOTFILES/extras/fzf-tab-config.zsh
 
-if [[ $+commands[fd] ]]; then
+if (( $+commands[fd] )); then
   export FZF_CTRL_T_COMMAND='fd'
 else
   export FZF_CTRL_T_COMMAND='find'
@@ -112,8 +112,8 @@ export ZSH_AUTOSUGGEST_COMPLETION_IGNORE='* \#*' # prevent completion for commen
 
 # less options
 export LESS='-xRF-j12' #  -j12: displays 12 lines before search results with / and ?
-if [[ $+commands[bat] || $+commands[batcat] ]]; then
-    if [[ $+commands[bat] ]]; then cmd=bat else cmd=batcat fi
+if (( $+commands[bat] || $+commands[batcat] )); then
+  if (( $+commands[bat] )); then cmd=bat else cmd=batcat fi
 
     alias cat=$cmd
     export PAGER=$cmd

extras/check_for_update.zsh

@@ -30,7 +30,7 @@ function _update_dotfiles_update() {
 
 function update_dotfiles() {
     (cd $DOTFILES; git pull -q --rebase  && echo "Succesfully upgraded dotfiles" || echo "Could not upgrade dotfiles.")
-    (cd $DOTFILES/antidote && git pull -rebase || echo "Could not upgrade antidote")
+    (cd $DOTFILES/antidote && git pull --rebase || echo "Could not upgrade antidote")
     vim -c 'PlugUpdate|PlugClean|qa!'
     # update the zsh file
     _update_dotfiles_update