Find a way to suppress extra echo and cat commands

[gvwilson]

We sometimes have to pad solutions with echo or cat to prevent the shell from getting stuck, but when learners display solutions, those extra commands confuse them. Similarly, when we want the user to use nano, we have to use cp or something like it to create the file. We've documented this by adding comments to solutions, but it's still generating a lot of complaints.

Zendesk Information

● Total Number of additional reports: 2

[Hadrien-lcrx]

Another student reached out about this issue: marcocerrato@gmail.com, #86822

So far I've had 8 students reach out about exercises that can't be completed, or where the solution doesn't match the instructions (circumventing the nano issue). Cc @bakera81

[Hadrien-lcrx]

Another student reached out about this issue: siulinjj@poczta.onet.pl, #87090 Cc @bakera81

[Hadrien-lcrx]

Another student reached out about this issue: sibaram.baral77@gmail.com, #92219 Cc @Robert-cabral @bakera81

[Hadrien-lcrx]

A student that reached out previously sent a follow up email insisting on a fix to complete the exercises and be able to remove the course from the list of courses in progress.

Cf vtuzel@yahoo.com, #82082 Cc @bakera81 @Robert-cabral

[gvwilson]

See https://github.com/datacamp/learn-features/issues/14

[filipsch]

It's reported on learn-features, so closing here.