When I run a series of commands via "scl", there's no way to echo the commands that are running.

For example, in a Jenkins job I run something equivalent to the following:

  scl enable ruby193 - <<EOF
  bundle install
  bundle exec rake db:test:purge
  bundle exec rake db:setup
  COVERAGE=1 bundle exec rake ci:setup:minitest test:units rcov
  EOF

The problem is that once the script enters the "scl enable ruby193" part, I can't see any of the commands that are run. If things fail, I have a general idea because I wrote the script, but it's pretty opaque to anyone else.

Compare this to bash. In plain bash, I can see the commands when I pass an "-x" parameter. For example:

  bash -x - <<EOF
  ruby -v
  EOF

...will print the "ruby -v" command before printing the actual Ruby version output.

It would be nice to have a similar "echo" option for the scl utility.