diff --git a/.bash/.bash_aliases b/.bash/.bash_aliases
index ee33c9f..423e3a9 100644
--- a/.bash/.bash_aliases
+++ b/.bash/.bash_aliases
@@ -89,6 +89,7 @@ alias §psmem='§psmem_all | head -n 10'
 alias §pscpu_all='ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%cpu'
 alias §pscpu='§pscpu_all | head -n 10'
 alias §psnet_all='lsof -P -i -n'
+alias §ck-grep='cat /usr/share/X11/locale/en_US.UTF-8/Compose ~/.XCompose | grep -i'
 
 §ping-test(){ # Pings ip address of noip.com and www.google.com.
   ping -c 1 -q 8.23.224.107 | grep --color=never -A 1 -i '\---'
@@ -116,7 +117,8 @@ alias npx-wca='npx -y web-component-analyzer'
 alias npx-qnm='npx -y qnm'
 alias npx-hint='npx -y hint'
 alias npx-markdown='nohup npx markserv'
-alias zfz=fzf-carroarmato0.fzf
+
+alias fzf=fzf-carroarmato0.fzf
 
 §url-curl(){ curl --silent -I "$1" | grep -i location; }
 
diff --git a/.bash/.bash_completions b/.bash/.bash_completions
index e65918d..bb57328 100644
--- a/.bash/.bash_completions
+++ b/.bash/.bash_completions
@@ -13,6 +13,7 @@ alias C--uu='eval "$($HOME/bin/uu --completion-bash)"'
 alias C--bs='eval "$(bs .completion bash)"'
 alias C--jc='eval "$(jc -B)" … newer version needed'
 \. "$BASH_DOTFILES/cordova.completion"
+\. "$BASH_DOTFILES/install-release.completion"
 eval "$(node --completion-bash)"
 eval "$(npm completion)"
 eval "$(nodejsscript --completion bash)"
diff --git a/.bash/.bash_jaaENV b/.bash/.bash_jaaENV
index 38b21f0..819394c 100644
--- a/.bash/.bash_jaaENV
+++ b/.bash/.bash_jaaENV
@@ -38,17 +38,21 @@ function jaaENV {
 		do
 			case "$1" in
 				nodejs|node)
-					local nodejs_version=`node --version`
+					local nodejs_version=$(node --version)
 					echo "nodejs=${nodejs_version:1}" >> .jaaENV
 					;;
 				gradle)
-					local gradle_version=`gradle --version | head -n 3 | tail -n 1 | §awk 2`
+					local gradle_version=$(gradle --version | head -n 3 | tail -n 1 | §awk 2)
 					echo "gradle=$gradle_version" >> .jaaENV
 					;;
 				php)
-					local php_version=`php --version | head -n 1 | §awk 2`
+					local php_version=$(php --version | head -n 1 | §awk 2)
 					echo "php=$php_version" >> .jaaENV
 					;;
+				java)
+					local java_version=$(java -version 2>&1 | head -n 1 | cut -d'"' -f2 | cut -d'.' -f1)
+					echo "java=$java_version" >> .jaaENV
+					;;
 				*)
 					echo "unknown '$1' – skipped"
 					;;
@@ -73,6 +77,22 @@ function jaaENV {
 	else
 		. ./.jaaENV
 	fi
+	if [ ! -z ${java+x} ]; then
+		[[ "$java" == "8" ]] && java=1.8
+		local java_local=$(java -version 2>&1 | head -n 1 | cut -d'"' -f2)
+		if [[ "$java_local" != "$java"* ]]; then
+			[[ "$java" == "1.8" ]] && java=8
+			echo "java $java ← $java_local"
+			local v="/usr/lib/jvm/java-$java-openjdk-amd64/"
+			[[ "$java" == "8" ]] && local vv="jre/" || local vv=""
+			sudo update-alternatives --set java ${v}${vv}bin/java
+			local javac=$(update-alternatives --list javac | grep java-$java)
+			[ $javac ] && sudo update-alternatives --set javac $javac
+			sudo -k
+		fi
+		export JAVA_HOME=$(update-alternatives --display java | grep momentálně | §awk 5 | cut -d \/ -f1-5)/
+		echo \$JAVA_HOME=$JAVA_HOME
+	fi
 	if [ ! -z ${android_home+x} ]; then export ANDROID_HOME=$ANDROID_HOME_BAK; echo "\$ANDROID_HOME=$ANDROID_HOME"; else unset ANDROID_HOME; echo "\$ANDROID_SDK_ROOT=$ANDROID_SDK_ROOT"; fi
 	if [ ! -z ${android_home_is_sdk+x} ]; then export ANDROID_HOME=$ANDROID_SDK_ROOT; echo "\$ANDROID_HOME=$ANDROID_HOME"; fi
 	if [ ! -z ${jdk+x} ]; then
@@ -87,7 +107,7 @@ function jaaENV {
 	if [ ! -z ${nodejs+x} ]; then nvm use $nodejs; fi
 	if [ ! -z ${gradle+x} ]; then sdk use gradle $gradle | tr -d '\n'; echo ; fi
 	if [ ! -z ${php+x} ];	 then
-		local php_local=`php --version | head -n 1 | §awk 2`
+		local php_local=$(php --version | head -n 1 | §awk 2)
 		if [[ "$php_local" == "$php"* ]]; then
 			echo "php $php"
 		else
@@ -100,4 +120,5 @@ function jaaENV {
 	unset nodejs
 	unset gradle
 	unset php
+	unset java
 }
diff --git a/.bash/install-release.completion b/.bash/install-release.completion
new file mode 100644
index 0000000..250b584
--- /dev/null
+++ b/.bash/install-release.completion
@@ -0,0 +1,10 @@
+_install_release_completion() {
+    local IFS=$'
+'
+    COMPREPLY=( $( env COMP_WORDS="${COMP_WORDS[*]}" \
+                   COMP_CWORD=$COMP_CWORD \
+                   _INSTALL_RELEASE_COMPLETE=complete_bash $1 ) )
+    return 0
+}
+
+complete -o default -F _install_release_completion install-release
\ No newline at end of file