File: exec11.sub

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bash 5.3-1
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file content (14 lines) | stat: -rw-r--r-- 313 bytes parent folder | download | duplicates (6) 
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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