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Re: [Help-bash] question about trap
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From: |
Greg Wooledge |
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Subject: |
Re: [Help-bash] question about trap |
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Date: |
Wed, 16 Jan 2013 08:17:29 -0500 |
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User-agent: |
Mutt/1.4.2.3i |
On Wed, Jan 16, 2013 at 09:08:02AM +0800, MaShimiao wrote:
> I read bash's changelog. And it says in version 4.2, "trap -p" will show
> signals ignored at shell startup.
> my question is which kind of signals will be ignored .
Whatever you (or the process which invoked you) ignored.
imadev:~$ ( trap '' USR1; bash -c 'trap -p' )
trap -- '' SIGUSR1
Compare to earlier version:
imadev:~$ ( trap '' USR1; bash-4.1.9 -c 'trap -p' )
imadev:~$