Shell: allow to toggle "exit on error"

Changelog: Implemented "set +e/-e" in the shell interpreter.

1 files changed, 3 insertions, 0 deletions

diff --git a/README.md b/README.md
index c184bda..6d5baf1 100644
--- a/README.md
+++ b/README.md
@@ -416,6 +416,9 @@ Where `<node>` is the network node on which to run the script (it will be run in
 and `<name>`, if given, is the name of the variable that will refer to the shell process (this can be used e.g. in the `expect` command to check the standard output of the script).
 As with the `spawn` command, the resulting process is terminated at the end of the current scope.
 
+By default the shell process exists with failure whenever any command exits with non-zero status.
+This behavior can be disabled using the `set +e` command (and re-enabled with `set -e`).
+
 
 ### Functions