|
| From: | Grisha Levit |
| Subject: | nounset and $! behavior |
| Date: | Mon, 12 Nov 2018 18:55:37 -0500 |
The following crashes bash:
bash-5.0$ set -u
bash-5.0$ echo ${!,}
bash: $!: unbound variable
bash: !: unbound variable
bash-5.0$ echo ${!,}
bash: $!: unbound variable
Testing if $! is set also doesn't seem to be possible:
bash-5.0$ echo ${!-}
bash: $!: unbound variable
| [Prev in Thread] | Current Thread | [Next in Thread] |