[Bash] How to exit the parent script if a child die? Call "./child.sh || exit 1" from the parent. Here an example:

bash_make_child_script_exit_parent_script.sh

#!/bin/bash

## LICENSE
## Copyright (c) 2017, Luca Bertolasi. All Rights Reserved.
##
## This source code is licensed under the terms of the MIT license,
## a copy of which can be found at https://choosealicense.com/licenses/mit/

cat << EOF > $(pwd)/parent.sh
#!/bin/bash
echo parent...start child_success
echo
./child_success.sh || exit 1  ## this line will succeed and not affect execution
echo
echo parent...start child_failure
echo
./child_failure.sh || exit 1  ## this line will fail and make the parent exit immediately
echo
echo parent...end
EOF

cat << EOF > $(pwd)/child_success.sh
#!/bin/bash
echo child_success...start
echo child_success...success
echo child_success...end
EOF

cat << EOF > $(pwd)/child_failure.sh
#!/bin/bash
echo child_failure...start
echo child_failure...failure
exit 1  ## here we are simulating a command that will fail and exit with code 1, making the parent exit immediately
echo child_failure...end
EOF

chmod u+x $(pwd)/parent.sh $(pwd)/child_success.sh $(pwd)/child_failure.sh
./parent.sh