Jenkins Shell script, replace "/" with "_", fails with Bad substitution

Question

I have a Jenkins job with 1 string parameter ($BRANCH) default set to "branch/stage/feature". The single build step is to Execute Shell..

set +x
echo ${BRANCH////_}

It fails with 'Bad substitution'

I'm trying to replace all the foreward slashes with underscores and save it to a new string.

Tangentially, see also [When to wrap quotes around a shell variable?](https://stackoverflow.com/questions/10067266/when-to-wrap-quotes-around-a-shell-variable) — tripleee, Dec 04 '19 at 19:03

score 0 · Answer 1 · answered Dec 04 '19 at 19:07

0

Running in bash works I added #!/bin/bash to the top of the script

#!/bin/bash
set +x
echo ${BRANCH////_}

answered Dec 04 '19 at 19:07

RockPile

1 Answers1