| trap 'echo USR1 $BASHPID' USR1 | |
| trap 'echo foo $BASH_SUBSHELL' 0 | |
| trap | cat | |
| echo between | |
| ( trap ) | |
| echo between 2 | |
| { trap; } | cat | |
| ( echo in subshell: $BASH_SUBSHELL ) | |
| ( echo in subshell pipeline: $BASH_SUBSHELL ) | cat | |
| { echo group pipeline: $BASH_SUBSHELL; | |
| trap 'echo EXIT-group.$BASH_SUBSHELL' EXIT; } | cat |