In /usr/bin/geotranz line 3:
ARCH="`dpkg-architecture -qDEB_HOST_MULTIARCH`"
      ^-- SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
ARCH="$(dpkg-architecture -qDEB_HOST_MULTIARCH)"


In /usr/bin/geotranz line 29:
JAVA=`which java`
     ^----------^ SC2006: Use $(...) notation instead of legacy backticked `...`.

Did you mean: 
JAVA=$(which java)


In /usr/bin/geotranz line 42:
exec $JAVA -Xss1024k -jar $JAR
     ^---^ SC2086: Double quote to prevent globbing and word splitting.

Did you mean: 
exec "$JAVA" -Xss1024k -jar $JAR

For more information:
  https://www.shellcheck.net/wiki/SC2086 -- Double quote to prevent globbing ...
  https://www.shellcheck.net/wiki/SC2006 -- Use $(...) notation instead of le...