Antlr is a parser generator written in Java. Execute these commands to download atlr .jar file in /usr/local/lib directory cd /usr/local/libcurl -O http://www.antlr.org/download/antlr-4.5-complete.jar add antlr4 to your class path. export CLASSPATH=”.:/usr/local/lib/antlr-4.5-complete.jar:$CLASSPATH” create alias alias antlr4=’java -Xmx500M -cp “/usr/local/lib/antlr-4.5-complete.jar:$CLASSPATH” org.antlr.v4.Tool’alias grun=’java…